March 2026 - ghc-commits

[Git][ghc/ghc][wip/T26930] ghc-internal: Float Generics to near top of module graph
by Teo Camarasu (＠teo) 19 Mar '26

19 Mar '26

Teo Camarasu pushed to branch wip/T26930 at Glasgow Haskell Compiler / GHC Commits: a67f056a by Teo Camarasu at 2026-03-19T19:18:54+00:00 ghc-internal: Float Generics to near top of module graph We remove GHC.Internal.Generics from the critical path of the `ghc-internal` module graph. GHC.Internal.Generics used to be in the middle of the module graph, but now it is nearer the top (built later). This change thins out the module graph and allows us to get rid of the ByteOrder hs-boot file. We implement this by moving Generics instances from the module where the datatype is defined to the GHC.Internal.Generics module. This trades off increasing the compiled size of GHC.Internal.Generics with reducing the dependency footprint of datatype modules. Not all instances are moved to GHC.Internal.Generics. For instance, `GHC.Internal.Control.Monad.Fix` keeps its instance as it is one of the very last modules compiled in `ghc-internal` and so inverting the relationship here would risk adding GHC.Internal.Generics back onto the critical path. We also don't change modules that are re-exported from the `template-haskell` or `ghc-heap`. This is done to make it easy to eventually move `Generics` to `base` once something like #26657 is implemented. Resolves #26930 Metric Decrease: T21839c - - - - - 26 changed files: - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - − libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Event/Control.hs - libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs - libraries/ghc-internal/src/GHC/Internal/Generics.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc - libraries/ghc-internal/src/GHC/Internal/Read.hs - libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Bits.hs - testsuite/tests/ghci/scripts/ListTuplePunsPpr.stdout - testsuite/tests/ghci/scripts/T10963.stderr - testsuite/tests/ghci/scripts/ghci064.stdout - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a67f056ad8039dcd1cbe63c7e1a918c… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a67f056ad8039dcd1cbe63c7e1a918c… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/jeltsch/text-read-uncovering] 6 commits: Move most of the `System.IO` implementation into `base`
by Wolfgang Jeltsch (＠jeltsch) 19 Mar '26

19 Mar '26

Wolfgang Jeltsch pushed to branch wip/jeltsch/text-read-uncovering at Glasgow Haskell Compiler / GHC Commits: 7436dd5a by Wolfgang Jeltsch at 2026-03-19T20:48:03+02:00 Move most of the `System.IO` implementation into `base` Metric Increase: T12227 T12707 T5642 - - - - - f7eb3597 by Wolfgang Jeltsch at 2026-03-19T20:48:52+02:00 Move I/O-related `Read` instances into `base` Metric Increase: T12425 T13035 - - - - - 06758b6d by Wolfgang Jeltsch at 2026-03-19T20:48:52+02:00 Move most of the `Numeric` implementation into `base` The `showHex` operation and the `showIntAtBase` operation, which underlies it, are kept in `GHC.Internal.Numeric`, because `showHex` is used in a few places in `ghc-internal`; everything else is moved. - - - - - 6acc393e by Wolfgang Jeltsch at 2026-03-19T20:48:52+02:00 Move the instance `Read ByteOrder` into `base` - - - - - 7caafe58 by Wolfgang Jeltsch at 2026-03-19T20:48:52+02:00 Move the implementation of version parsing into `base` - - - - - 7abb041f by Wolfgang Jeltsch at 2026-03-19T20:48:52+02:00 Move the implementation of `readConstr` into `base` - - - - - 41 changed files: - libraries/base/src/Data/Data.hs - libraries/base/src/Data/Version.hs - libraries/base/src/GHC/ByteOrder.hs - libraries/base/src/GHC/IO/Handle.hs - libraries/base/src/Numeric.hs - libraries/base/src/Prelude.hs - libraries/base/src/System/IO.hs - libraries/base/src/Text/Printf.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - libraries/ghc-internal/src/GHC/Internal/Data/Data.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/IO/Device.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Types.hs - libraries/ghc-internal/src/GHC/Internal/IO/IOMode.hs - libraries/ghc-internal/src/GHC/Internal/Numeric.hs - libraries/ghc-internal/src/GHC/Internal/System/IO.hs - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 - testsuite/tests/plugins/plugins09.stdout - testsuite/tests/plugins/plugins10.stdout - testsuite/tests/plugins/plugins11.stdout - testsuite/tests/plugins/static-plugins.stdout - testsuite/tests/typecheck/should_compile/T9497a.stderr - testsuite/tests/typecheck/should_compile/holes.stderr - testsuite/tests/typecheck/should_compile/holes3.stderr - testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr - testsuite/tests/typecheck/should_fail/T9497d.stderr - testsuite/tests/typecheck/should_run/T9497a-run.stderr - testsuite/tests/typecheck/should_run/T9497b-run.stderr - testsuite/tests/typecheck/should_run/T9497c-run.stderr - utils/haddock/html-test/ref/Bug1004.html - utils/haddock/html-test/ref/Bug973.html - utils/haddock/html-test/ref/ConstructorPatternExport.html - utils/haddock/html-test/ref/DefaultSignatures.html - utils/haddock/html-test/ref/Hash.html - utils/haddock/html-test/ref/PatternSyns.html - utils/haddock/html-test/ref/PatternSyns2.html - utils/haddock/html-test/ref/QuasiExpr.html - utils/haddock/html-test/ref/Test.html The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b2122fdbf83652b0f17518412a65f5… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b2122fdbf83652b0f17518412a65f5… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/jeltsch/system-io-implementation-into-base] Move most of the `System.IO` implementation into `base`
by Wolfgang Jeltsch (＠jeltsch) 19 Mar '26

19 Mar '26

Wolfgang Jeltsch pushed to branch wip/jeltsch/system-io-implementation-into-base at Glasgow Haskell Compiler / GHC Commits: 7436dd5a by Wolfgang Jeltsch at 2026-03-19T20:48:03+02:00 Move most of the `System.IO` implementation into `base` Metric Increase: T12227 T12707 T5642 - - - - - 26 changed files: - libraries/base/src/GHC/IO/Handle.hs - libraries/base/src/Prelude.hs - libraries/base/src/System/IO.hs - libraries/base/src/Text/Printf.hs - libraries/ghc-internal/src/GHC/Internal/System/IO.hs - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 - testsuite/tests/typecheck/should_compile/T9497a.stderr - testsuite/tests/typecheck/should_compile/holes.stderr - testsuite/tests/typecheck/should_compile/holes3.stderr - testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr - testsuite/tests/typecheck/should_fail/T9497d.stderr - testsuite/tests/typecheck/should_run/T9497a-run.stderr - testsuite/tests/typecheck/should_run/T9497b-run.stderr - testsuite/tests/typecheck/should_run/T9497c-run.stderr - utils/haddock/html-test/ref/Bug1004.html - utils/haddock/html-test/ref/Bug973.html - utils/haddock/html-test/ref/ConstructorPatternExport.html - utils/haddock/html-test/ref/DefaultSignatures.html - utils/haddock/html-test/ref/Hash.html - utils/haddock/html-test/ref/PatternSyns.html - utils/haddock/html-test/ref/PatternSyns2.html - utils/haddock/html-test/ref/QuasiExpr.html - utils/haddock/html-test/ref/Test.html Changes: ===================================== libraries/base/src/GHC/IO/Handle.hs ===================================== @@ -53,6 +53,7 @@ module GHC.IO.Handle hGetEcho, hIsTerminalDevice, hSetNewlineMode, + hGetNewlineMode, Newline(..), NewlineMode(..), nativeNewline, ===================================== libraries/base/src/Prelude.hs ===================================== @@ -165,7 +165,7 @@ module Prelude ( ) where import GHC.Internal.Control.Monad -import GHC.Internal.System.IO +import System.IO import GHC.Internal.System.IO.Error import qualified GHC.Internal.Data.List as List import GHC.Internal.Data.Either ===================================== libraries/base/src/System/IO.hs ===================================== @@ -1,4 +1,5 @@ -{-# LANGUAGE Safe #-} +{-# LANGUAGE Trustworthy #-} +{-# LANGUAGE CPP #-} -- | -- @@ -184,8 +185,672 @@ module System.IO nativeNewlineMode ) where -import GHC.Internal.System.IO +import GHC.Internal.System.IO (putStrLn, print) + +import GHC.Base (Bool (False, True), otherwise, failIO) +import GHC.Err (errorWithoutStackTrace) +import GHC.List (null, elem, last, (++), reverse, break) +import GHC.Num ((+)) +import GHC.IO (IO, FilePath) +import GHC.IO.IOMode (IOMode (ReadMode, WriteMode, ReadWriteMode, AppendMode)) +import qualified GHC.Internal.IO.FD as FD +import GHC.IO.Encoding + ( + TextEncoding, + mkTextEncoding, + getLocaleEncoding, + initLocaleEncoding, + utf8, + utf8_bom, + utf16, + utf16be, + utf16le, + utf32, + utf32be, + utf32le, + latin1, + char8 + ) +import GHC.IO.Handle + ( + Handle, + hLookAhead, + hFlush, + hClose, + hSetBinaryMode, + hSetEncoding, + hSetNewlineMode, + hSetEcho, + hSetFileSize, + hGetEncoding, + hGetNewlineMode, + hGetEcho, + hFileSize, + hIsOpen, + hIsReadable, + hIsSeekable, + hIsWritable, + hIsTerminalDevice, + hIsEOF, + hIsClosed, + hShow, + BufferMode (NoBuffering, LineBuffering, BlockBuffering), + hSetBuffering, + hGetBuffering, + HandlePosn, + hSetPosn, + hGetPosn, + SeekMode (AbsoluteSeek, RelativeSeek, SeekFromEnd), + hSeek, + hTell, + Newline (LF, CRLF), + nativeNewline, + NewlineMode (NewlineMode, inputNL, outputNL), + noNewlineTranslation, + nativeNewlineMode, + universalNewlineMode, + isEOF + ) +import GHC.IO.Handle.Text + ( + hPutChar, + hPutStr, + hPutStrLn, + hPutBuf, + hPutBufNonBlocking, + hGetChar, + hGetContents, + hGetContents', + hGetLine, + hGetBuf, + hGetBufNonBlocking, + hGetBufSome, + hWaitForInput + ) +import qualified GHC.Internal.IO.Handle.FD as POSIX +import GHC.IO.StdHandles + ( + openBinaryFile, + withBinaryFile, + openFile, + withFile, + stdin, + stdout, + stderr + ) +import GHC.IORef (atomicModifyIORef'_) import GHC.Internal.Control.Monad.Fix (fixIO) +import Control.Monad (return, (>>=)) +import Control.Exception (ioError) +import Data.Eq ((==)) +import Data.Ord ((<)) +import Data.Bits ((.|.)) +import Data.Function (($), (.)) +import Data.Maybe (Maybe (Nothing, Just)) +import Data.Char (Char) +import Data.String (String) +import Data.Int (Int) +import Data.IORef (IORef, newIORef) +import System.IO.Error (userError) +import System.IO.Unsafe (unsafePerformIO) +import System.Posix.Internals + ( + c_getpid, + c_open, + o_CREAT, + o_EXCL, + o_BINARY, + o_NONBLOCK, + o_RDWR, + o_NOCTTY, + withFilePath + ) +import System.Posix.Types (CMode) +import Text.Read (lex, Read, reads) +import Text.Show (Show, show) +import Foreign.C.Types (CInt) +import Foreign.C.Error (Errno, eEXIST, getErrno, errnoToIOError) + +#if defined(mingw32_HOST_OS) +import GHC.Base (undefined, not, (||), fmap) +import GHC.List (any) +import GHC.Num ((*)) +import GHC.IO (onException) +import GHC.IO.SubSystem +import GHC.IO.Windows.Handle (openFileAsTemp) +import GHC.IO.Handle.Windows (mkHandleFromHANDLE) +import GHC.IO.Device as IODevice +import GHC.Internal.Real (fromIntegral) +import Data.Bits ((.&.)) +import Foreign.C.Types (CUInt (CUInt), CWchar) +import Foreign.C.String +import Foreign.Ptr +import Foreign.Marshal.Alloc +import Foreign.Marshal.Utils (with) +import Foreign.Storable +#endif + +----------------------------------------------------------------------------- +-- Standard IO + +-- | Write a character to the standard output device +-- +-- 'putChar' is implemented as @'hPutChar' 'stdout'@. +-- +-- This operation may fail with the same errors as 'hPutChar'. +-- +-- ==== __Examples__ +-- +-- Note that the following do not put a newline. +-- +-- >>> putChar 'x' +-- x +-- +-- >>> putChar '\0042' +-- * +putChar :: Char -> IO () +putChar c = hPutChar stdout c + +-- | Write a string to the standard output device +-- +-- 'putStr' is implemented as @'hPutStr' 'stdout'@. +-- +-- This operation may fail with the same errors, and has the same issues with concurrency, as 'hPutStr'! +-- +-- ==== __Examples__ +-- +-- Note that the following do not put a newline. +-- +-- >>> putStr "Hello, World!" +-- Hello, World! +-- +-- >>> putStr "\0052\0042\0050" +-- 4*2 +-- +putStr :: String -> IO () +putStr s = hPutStr stdout s + +-- | Read a single character from the standard input device. +-- +-- 'getChar' is implemented as @'hGetChar' 'stdin'@. +-- +-- This operation may fail with the same errors as 'hGetChar'. +-- +-- ==== __Examples__ +-- +-- >>> getChar +-- a'a' +-- +-- >>> getChar +-- > +-- '\n' +getChar :: IO Char +getChar = hGetChar stdin + +-- | Read a line from the standard input device. +-- +-- 'getLine' is implemented as @'hGetLine' 'stdin'@. +-- +-- This operation may fail with the same errors as 'hGetLine'. +-- +-- ==== __Examples__ +-- +-- >>> getLine +-- > Hello World! +-- "Hello World!" +-- +-- >>> getLine +-- > +-- "" +getLine :: IO String +getLine = hGetLine stdin + +-- | The 'getContents' operation returns all user input as a single string, +-- which is read lazily as it is needed. +-- +-- 'getContents' is implemented as @'hGetContents' 'stdin'@. +-- +-- This operation may fail with the same errors as 'hGetContents'. +-- +-- ==== __Examples__ +-- +-- >>> getContents >>= putStr +-- > aaabbbccc :D +-- aaabbbccc :D +-- > I hope you have a great day +-- I hope you have a great day +-- > ^D +-- +-- >>> getContents >>= print . length +-- > abc +-- > <3 +-- > def ^D +-- 11 +getContents :: IO String +getContents = hGetContents stdin + +-- | The 'getContents'' operation returns all user input as a single string, +-- which is fully read before being returned +-- +-- 'getContents'' is implemented as @'hGetContents'' 'stdin'@. +-- +-- This operation may fail with the same errors as 'hGetContents''. +-- +-- ==== __Examples__ +-- +-- >>> getContents' >>= putStr +-- > aaabbbccc :D +-- > I hope you have a great day +-- aaabbbccc :D +-- I hope you have a great day +-- +-- >>> getContents' >>= print . length +-- > abc +-- > <3 +-- > def ^D +-- 11 +-- +-- @since base-4.15.0.0 +getContents' :: IO String +getContents' = hGetContents' stdin + +-- | @'interact' f@ takes the entire input from 'stdin' and applies @f@ to it. +-- The resulting string is written to the 'stdout' device. +-- +-- Note that this operation is lazy, which allows to produce output +-- even before all input has been consumed. +-- +-- This operation may fail with the same errors as 'getContents' and 'putStr'. +-- +-- If it doesn't produce output the buffering settings may not be +-- correct, use ^D (ctrl+D) to close stdin which forces +-- the buffer to be consumed. +-- +-- You may wish to set the buffering style appropriate to your program's +-- needs before using this function, for example: +-- +-- @ +-- main :: IO () +-- main = do +-- hSetBuffering stdin LineBuffering +-- hSetBuffering stdout NoBuffering +-- interact (concatMap (\str -> str ++ str) . L.lines) +-- @ +-- +-- ==== __Examples__ +-- +-- >>> interact (\str -> str ++ str) +-- > hi :) +-- hi :) +-- > ^D +-- hi :) +-- +-- >>> interact (const ":D") +-- :D +-- +-- >>> interact (show . words) +-- > hello world! +-- > I hope you have a great day +-- > ^D +-- ["hello","world!","I","hope","you","have","a","great","day"] +interact :: (String -> String) -> IO () +interact f = do s <- getContents + putStr (f s) + +-- | The 'readFile' function reads a file and +-- returns the contents of the file as a string. +-- +-- The file is read lazily, on demand, as with 'getContents'. +-- +-- This operation may fail with the same errors as 'hGetContents' and 'openFile'. +-- +-- ==== __Examples__ +-- +-- >>> readFile "~/hello_world" +-- "Greetings!" +-- +-- >>> take 5 <$> readFile "/dev/zero" +-- "\NUL\NUL\NUL\NUL\NUL" +readFile :: FilePath -> IO String +readFile name = openFile name ReadMode >>= hGetContents + +-- | The 'readFile'' function reads a file and +-- returns the contents of the file as a string. +-- +-- This is identical to 'readFile', but the file is fully read before being returned, +-- as with 'getContents''. +-- +-- @since base-4.15.0.0 +readFile' :: FilePath -> IO String +-- There's a bit of overkill here—both withFile and +-- hGetContents' will close the file in the end. +readFile' name = withFile name ReadMode hGetContents' + +-- | The computation @'writeFile' file str@ function writes the string @str@, +-- to the file @file@. +-- +-- This operation may fail with the same errors as 'hPutStr' and 'withFile'. +-- +-- ==== __Examples__ +-- +-- >>> writeFile "hello" "world" >> readFile "hello" +-- "world" +-- +-- >>> writeFile "~/" "D:" +-- *** Exception: ~/: withFile: inappropriate type (Is a directory) +writeFile :: FilePath -> String -> IO () +writeFile f txt = withFile f WriteMode (\ hdl -> hPutStr hdl txt) + +-- | The computation @'appendFile' file str@ function appends the string @str@, +-- to the file @file@. +-- +-- Note that 'writeFile' and 'appendFile' write a literal string +-- to a file. To write a value of any printable type, as with 'print', +-- use the 'show' function to convert the value to a string first. +-- +-- This operation may fail with the same errors as 'hPutStr' and 'withFile'. +-- +-- ==== __Examples__ +-- +-- The following example could be more efficently written by acquiring a handle +-- instead with 'openFile' and using the computations capable of writing to handles +-- such as 'hPutStr'. +-- +-- >>> let fn = "hello_world" +-- >>> in writeFile fn "hello" >> appendFile fn " world!" >> (readFile fn >>= putStrLn) +-- "hello world!" +-- +-- >>> let fn = "foo"; output = readFile' fn >>= putStrLn +-- >>> in output >> appendFile fn (show [1,2,3]) >> output +-- this is what's in the file +-- this is what's in the file[1,2,3] +appendFile :: FilePath -> String -> IO () +appendFile f txt = withFile f AppendMode (\ hdl -> hPutStr hdl txt) + +-- | The 'readLn' function combines 'getLine' and 'readIO'. +-- +-- This operation may fail with the same errors as 'getLine' and 'readIO'. +-- +-- ==== __Examples__ +-- +-- >>> fmap (+ 5) readLn +-- > 25 +-- 30 +-- +-- >>> readLn :: IO String +-- > this is not a string literal +-- *** Exception: user error (Prelude.readIO: no parse) +readLn :: Read a => IO a +readLn = getLine >>= readIO + +-- | The 'readIO' function is similar to 'read' except that it signals +-- parse failure to the 'IO' monad instead of terminating the program. +-- +-- This operation may fail with: +-- +-- * 'GHC.Internal.System.IO.Error.isUserError' if there is no unambiguous parse. +-- +-- ==== __Examples__ +-- +-- >>> fmap (+ 1) (readIO "1") +-- 2 +-- +-- >>> readIO "not quite ()" :: IO () +-- *** Exception: user error (Prelude.readIO: no parse) +readIO :: Read a => String -> IO a +readIO s = case (do { (x,t) <- reads s ; + ("","") <- lex t ; + return x }) of + [x] -> return x + [] -> ioError (userError "Prelude.readIO: no parse") + _ -> ioError (userError "Prelude.readIO: ambiguous parse") + +-- | The encoding of the current locale. +-- +-- This is the initial locale encoding: if it has been subsequently changed by +-- 'GHC.Internal.IO.Encoding.setLocaleEncoding' this value will not reflect that change. +localeEncoding :: TextEncoding +localeEncoding = initLocaleEncoding + +-- | Computation 'hReady' @hdl@ indicates whether at least one item is +-- available for input from handle @hdl@. +-- +-- This operation may fail with: +-- +-- * 'GHC.Internal.System.IO.Error.isEOFError' if the end of file has been reached. +hReady :: Handle -> IO Bool +hReady h = hWaitForInput h 0 + +-- | Computation 'hPrint' @hdl t@ writes the string representation of @t@ +-- given by the 'show' function to the file or channel managed by @hdl@ +-- and appends a newline. +-- +-- This operation may fail with the same errors as 'hPutStrLn' +-- +-- ==== __Examples__ +-- +-- >>> hPrint stdout [1,2,3] +-- [1,2,3] +-- +-- >>> hPrint stdin [4,5,6] +-- *** Exception: <stdin>: hPutStr: illegal operation (handle is not open for writing) +hPrint :: Show a => Handle -> a -> IO () +hPrint hdl = hPutStrLn hdl . show + +-- | The function creates a temporary file in ReadWrite mode. +-- The created file isn\'t deleted automatically, so you need to delete it manually. +-- +-- The file is created with permissions such that only the current +-- user can read\/write it. +-- +-- With some exceptions (see below), the file will be created securely +-- in the sense that an attacker should not be able to cause +-- openTempFile to overwrite another file on the filesystem using your +-- credentials, by putting symbolic links (on Unix) in the place where +-- the temporary file is to be created. On Unix the @O_CREAT@ and +-- @O_EXCL@ flags are used to prevent this attack, but note that +-- @O_EXCL@ is sometimes not supported on NFS filesystems, so if you +-- rely on this behaviour it is best to use local filesystems only. +openTempFile :: FilePath -- ^ Directory in which to create the file + -> String -- ^ File name template. If the template is \"foo.ext\" then + -- the created file will be \"fooXXX.ext\" where XXX is some + -- random number. Note that this should not contain any path + -- separator characters. On Windows, the template prefix may + -- be truncated to 3 chars, e.g. \"foobar.ext\" will be + -- \"fooXXX.ext\". + -> IO (FilePath, Handle) +openTempFile tmp_dir template + = openTempFile' "openTempFile" tmp_dir template False 0o600 + +-- | Like 'openTempFile', but opens the file in binary mode. See 'openBinaryFile' for more comments. +openBinaryTempFile :: FilePath -> String -> IO (FilePath, Handle) +openBinaryTempFile tmp_dir template + = openTempFile' "openBinaryTempFile" tmp_dir template True 0o600 + +-- | Like 'openTempFile', but uses the default file permissions +openTempFileWithDefaultPermissions :: FilePath -> String + -> IO (FilePath, Handle) +openTempFileWithDefaultPermissions tmp_dir template + = openTempFile' "openTempFileWithDefaultPermissions" tmp_dir template False 0o666 + +-- | Like 'openBinaryTempFile', but uses the default file permissions +openBinaryTempFileWithDefaultPermissions :: FilePath -> String + -> IO (FilePath, Handle) +openBinaryTempFileWithDefaultPermissions tmp_dir template + = openTempFile' "openBinaryTempFileWithDefaultPermissions" tmp_dir template True 0o666 + +openTempFile' :: String -> FilePath -> String -> Bool -> CMode + -> IO (FilePath, Handle) +openTempFile' loc tmp_dir template binary mode + | pathSeparator template + = failIO $ "openTempFile': Template string must not contain path separator characters: "++template + | otherwise = findTempName + where + -- We split off the last extension, so we can use .foo.ext files + -- for temporary files (hidden on Unix OSes). Unfortunately we're + -- below filepath in the hierarchy here. + (prefix, suffix) = + case break (== '.') $ reverse template of + -- First case: template contains no '.'s. Just re-reverse it. + (rev_suffix, "") -> (reverse rev_suffix, "") + -- Second case: template contains at least one '.'. Strip the + -- dot from the prefix and prepend it to the suffix (if we don't + -- do this, the unique number will get added after the '.' and + -- thus be part of the extension, which is wrong.) + (rev_suffix, '.':rest) -> (reverse rest, '.':reverse rev_suffix) + -- Otherwise, something is wrong, because (break (== '.')) should + -- always return a pair with either the empty string or a string + -- beginning with '.' as the second component. + _ -> errorWithoutStackTrace "bug in GHC.Internal.System.IO.openTempFile" +#if defined(mingw32_HOST_OS) + findTempName = findTempNamePosix <!> findTempNameWinIO + + findTempNameWinIO = do + let label = if null prefix then "ghc" else prefix + withCWString tmp_dir $ \c_tmp_dir -> + withCWString label $ \c_template -> + withCWString suffix $ \c_suffix -> + with nullPtr $ \c_ptr -> do + res <- c_createUUIDTempFileErrNo c_tmp_dir c_template c_suffix c_ptr + if not res + then do errno <- getErrno + ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) + else do c_p <- peek c_ptr + filename <- peekCWString c_p + free c_p + let flags = fromIntegral mode .&. o_EXCL + handleResultsWinIO filename (flags == o_EXCL) + + findTempNamePosix = do + let label = if null prefix then "ghc" else prefix + withCWString tmp_dir $ \c_tmp_dir -> + withCWString label $ \c_template -> + withCWString suffix $ \c_suffix -> + allocaBytes (sizeOf (undefined :: CWchar) * 260) $ \c_str -> do + res <- c_getTempFileNameErrorNo c_tmp_dir c_template c_suffix 0 + c_str + if not res + then do errno <- getErrno + ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) + else do filename <- peekCWString c_str + handleResultsPosix filename + + handleResultsPosix filename = do + let oflags1 = rw_flags .|. o_EXCL + binary_flags + | binary = o_BINARY + | otherwise = 0 + oflags = oflags1 .|. binary_flags + fd <- withFilePath filename $ \ f -> c_open f oflags mode + case fd < 0 of + True -> do errno <- getErrno + ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) + False -> + do (fD,fd_type) <- FD.mkFD fd ReadWriteMode Nothing{-no stat-} + False{-is_socket-} + True{-is_nonblock-} + + enc <- getLocaleEncoding + h <- POSIX.mkHandleFromFD fD fd_type filename ReadWriteMode + False{-set non-block-} (Just enc) + + return (filename, h) + + handleResultsWinIO filename excl = do + (hwnd, hwnd_type) <- openFileAsTemp filename True excl + mb_codec <- if binary then return Nothing else fmap Just getLocaleEncoding + + -- then use it to make a Handle + h <- mkHandleFromHANDLE hwnd hwnd_type filename ReadWriteMode mb_codec + `onException` IODevice.close hwnd + return (filename, h) + +foreign import ccall "getTempFileNameErrorNo" c_getTempFileNameErrorNo + :: CWString -> CWString -> CWString -> CUInt -> Ptr CWchar -> IO Bool + +foreign import ccall "__createUUIDTempFileErrNo" c_createUUIDTempFileErrNo + :: CWString -> CWString -> CWString -> Ptr CWString -> IO Bool + +pathSeparator :: String -> Bool +pathSeparator template = any (\x-> x == '/' || x == '\\') template + +output_flags = std_flags +#else /* else mingw32_HOST_OS */ + findTempName = do + rs <- rand_string + let filename = prefix ++ rs ++ suffix + filepath = tmp_dir `combine` filename + r <- openNewFile filepath binary mode + case r of + FileExists -> findTempName + OpenNewError errno -> ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) + NewFileCreated fd -> do + (fD,fd_type) <- FD.mkFD fd ReadWriteMode Nothing{-no stat-} + False{-is_socket-} + True{-is_nonblock-} + + enc <- getLocaleEncoding + h <- POSIX.mkHandleFromFD fD fd_type filepath ReadWriteMode False{-set non-block-} (Just enc) + + return (filepath, h) + + where + -- XXX bits copied from System.FilePath, since that's not available here + combine a b + | null b = a + | null a = b + | pathSeparator [last a] = a ++ b + | otherwise = a ++ [pathSeparatorChar] ++ b + +tempCounter :: IORef Int +tempCounter = unsafePerformIO $ newIORef 0 +{-# NOINLINE tempCounter #-} + +-- build large digit-alike number +rand_string :: IO String +rand_string = do + r1 <- c_getpid + (r2, _) <- atomicModifyIORef'_ tempCounter (+1) + return $ show r1 ++ "-" ++ show r2 + +data OpenNewFileResult + = NewFileCreated CInt + | FileExists + | OpenNewError Errno + +openNewFile :: FilePath -> Bool -> CMode -> IO OpenNewFileResult +openNewFile filepath binary mode = do + let oflags1 = rw_flags .|. o_EXCL + + binary_flags + | binary = o_BINARY + | otherwise = 0 + + oflags = oflags1 .|. binary_flags + fd <- withFilePath filepath $ \ f -> + c_open f oflags mode + if fd < 0 + then do + errno <- getErrno + case errno of + _ | errno == eEXIST -> return FileExists + _ -> return (OpenNewError errno) + else return (NewFileCreated fd) + +-- XXX Should use filepath library +pathSeparatorChar :: Char +pathSeparatorChar = '/' + +pathSeparator :: String -> Bool +pathSeparator template = pathSeparatorChar `elem` template + +output_flags = std_flags .|. o_CREAT +#endif /* mingw32_HOST_OS */ + +-- XXX Copied from GHC.Handle +std_flags, output_flags, rw_flags :: CInt +std_flags = o_NONBLOCK .|. o_NOCTTY +rw_flags = output_flags .|. o_RDWR -- $locking -- Implementations should enforce as far as possible, at least locally to the ===================================== libraries/base/src/Text/Printf.hs ===================================== @@ -99,7 +99,7 @@ import GHC.Internal.Data.List (stripPrefix) import GHC.Internal.Word import GHC.Internal.Numeric import GHC.Internal.Numeric.Natural -import GHC.Internal.System.IO +import System.IO -- $setup -- >>> import Prelude ===================================== libraries/ghc-internal/src/GHC/Internal/System/IO.hs ===================================== @@ -1,6 +1,4 @@ {-# LANGUAGE Trustworthy #-} -{-# LANGUAGE CPP, NoImplicitPrelude, CApiFFI #-} -{-# OPTIONS_GHC -Wno-x-partial #-} ----------------------------------------------------------------------------- -- | @@ -16,292 +14,13 @@ -- ----------------------------------------------------------------------------- -module GHC.Internal.System.IO ( - -- * The IO monad +module GHC.Internal.System.IO (putStrLn, print) where - IO, - - -- * Files and handles - - FilePath, - - Handle, -- abstract, instance of: Eq, Show. - - -- | GHC note: a 'Handle' will be automatically closed when the garbage - -- collector detects that it has become unreferenced by the program. - -- However, relying on this behaviour is not generally recommended: - -- the garbage collector is unpredictable. If possible, use - -- an explicit 'hClose' to close 'Handle's when they are no longer - -- required. GHC does not currently attempt to free up file - -- descriptors when they have run out, it is your responsibility to - -- ensure that this doesn't happen. - - -- ** Standard handles - - -- | Three handles are allocated during program initialisation, - -- and are initially open. - - stdin, stdout, stderr, - - -- * Opening and closing files - - -- ** Opening files - - withFile, - openFile, - IOMode(ReadMode,WriteMode,AppendMode,ReadWriteMode), - - -- ** Closing files - - hClose, - - -- ** Special cases - - -- | These functions are also exported by the "Prelude". - - readFile, - readFile', - writeFile, - appendFile, - - -- * Operations on handles - - -- ** Determining and changing the size of a file - - hFileSize, - hSetFileSize, - - -- ** Detecting the end of input - - hIsEOF, - isEOF, - - -- ** Buffering operations - - BufferMode(NoBuffering,LineBuffering,BlockBuffering), - hSetBuffering, - hGetBuffering, - hFlush, - - -- ** Repositioning handles - - hGetPosn, - hSetPosn, - HandlePosn, -- abstract, instance of: Eq, Show. - - hSeek, - SeekMode(AbsoluteSeek,RelativeSeek,SeekFromEnd), - hTell, - - -- ** Handle properties - - hIsOpen, hIsClosed, - hIsReadable, hIsWritable, - hIsSeekable, - - -- ** Terminal operations (not portable: GHC only) - - hIsTerminalDevice, - - hSetEcho, - hGetEcho, - - -- ** Showing handle state (not portable: GHC only) - - hShow, - - -- * Text input and output - - -- ** Text input - - hWaitForInput, - hReady, - hGetChar, - hGetLine, - hLookAhead, - hGetContents, - hGetContents', - - -- ** Text output - - hPutChar, - hPutStr, - hPutStrLn, - hPrint, - - -- ** Special cases for standard input and output - - -- | These functions are also exported by the "Prelude". - - interact, - putChar, - putStr, - putStrLn, - print, - getChar, - getLine, - getContents, - getContents', - readIO, - readLn, - - -- * Binary input and output - - withBinaryFile, - openBinaryFile, - hSetBinaryMode, - hPutBuf, - hGetBuf, - hGetBufSome, - hPutBufNonBlocking, - hGetBufNonBlocking, - - -- * Temporary files - - openTempFile, - openBinaryTempFile, - openTempFileWithDefaultPermissions, - openBinaryTempFileWithDefaultPermissions, - - -- * Unicode encoding\/decoding - - -- | A text-mode 'Handle' has an associated 'TextEncoding', which - -- is used to decode bytes into Unicode characters when reading, - -- and encode Unicode characters into bytes when writing. - -- - -- The default 'TextEncoding' is the same as the default encoding - -- on your system, which is also available as 'localeEncoding'. - -- (GHC note: on Windows, we currently do not support double-byte - -- encodings; if the console\'s code page is unsupported, then - -- 'localeEncoding' will be 'latin1'.) - -- - -- Encoding and decoding errors are always detected and reported, - -- except during lazy I/O ('hGetContents', 'getContents', and - -- 'readFile'), where a decoding error merely results in - -- termination of the character stream, as with other I/O errors. - - hSetEncoding, - hGetEncoding, - - -- ** Unicode encodings - TextEncoding, - latin1, - utf8, utf8_bom, - utf16, utf16le, utf16be, - utf32, utf32le, utf32be, - localeEncoding, - char8, - mkTextEncoding, - - -- * Newline conversion - - -- | In Haskell, a newline is always represented by the character - -- @\'\\n\'@. However, in files and external character streams, a - -- newline may be represented by another character sequence, such - -- as @\'\\r\\n\'@. - -- - -- A text-mode 'Handle' has an associated 'NewlineMode' that - -- specifies how to translate newline characters. The - -- 'NewlineMode' specifies the input and output translation - -- separately, so that for instance you can translate @\'\\r\\n\'@ - -- to @\'\\n\'@ on input, but leave newlines as @\'\\n\'@ on output. - -- - -- The default 'NewlineMode' for a 'Handle' is - -- 'nativeNewlineMode', which does no translation on Unix systems, - -- but translates @\'\\r\\n\'@ to @\'\\n\'@ and back on Windows. - -- - -- Binary-mode 'Handle's do no newline translation at all. - -- - hSetNewlineMode, - hGetNewlineMode, - Newline(..), nativeNewline, - NewlineMode(..), - noNewlineTranslation, universalNewlineMode, nativeNewlineMode, - ) where - -import GHC.Internal.Control.Exception.Base - -import GHC.Internal.Classes (Eq(..), Ord(..)) -import GHC.Internal.Data.Bits -import GHC.Internal.Data.Maybe -import GHC.Internal.Err (errorWithoutStackTrace) -import GHC.Internal.Foreign.C.Error -#if defined(mingw32_HOST_OS) -import GHC.Internal.Base (fmap) -import GHC.Internal.Classes (not, (||)) -import GHC.Internal.Err (undefined) -import GHC.Internal.Foreign.C.String -import GHC.Internal.Foreign.Ptr -import GHC.Internal.Foreign.Marshal.Alloc -import GHC.Internal.Foreign.Marshal.Utils (with) -import GHC.Internal.Foreign.Storable -import GHC.Internal.IO.SubSystem -import GHC.Internal.IO.Windows.Handle (openFileAsTemp) -import GHC.Internal.IO.Handle.Windows (mkHandleFromHANDLE) -import GHC.Internal.IO.Device as IODevice -import GHC.Internal.Real (fromIntegral) -#endif -import GHC.Internal.Foreign.C.Types -import GHC.Internal.System.Posix.Internals -import GHC.Internal.System.Posix.Types - -import GHC.Internal.Base (String, failIO, otherwise, return, ($), (.), (>>=)) -import GHC.Internal.List -#if !defined(mingw32_HOST_OS) -import GHC.Internal.IORef -#endif -import GHC.Internal.Num -import GHC.Internal.IO hiding ( bracket, onException ) -import GHC.Internal.IO.IOMode -import qualified GHC.Internal.IO.FD as FD -import GHC.Internal.IO.Handle -import qualified GHC.Internal.IO.Handle.FD as POSIX -import GHC.Internal.IO.Handle.Text ( hGetBufSome, hPutStrLn ) -import GHC.Internal.IO.Exception ( userError ) -import GHC.Internal.IO.Encoding -import GHC.Internal.Text.Read -import GHC.Internal.IO.StdHandles -import GHC.Internal.Show -import GHC.Internal.Types (Bool(..), Char, Int) ------------------------------------------------------------------------------ --- Standard IO - --- | Write a character to the standard output device --- --- 'putChar' is implemented as @'hPutChar' 'stdout'@. --- --- This operation may fail with the same errors as 'hPutChar'. --- --- ==== __Examples__ --- --- Note that the following do not put a newline. --- --- >>> putChar 'x' --- x --- --- >>> putChar '\0042' --- * -putChar :: Char -> IO () -putChar c = hPutChar stdout c - --- | Write a string to the standard output device --- --- 'putStr' is implemented as @'hPutStr' 'stdout'@. --- --- This operation may fail with the same errors, and has the same issues with concurrency, as 'hPutStr'! --- --- ==== __Examples__ --- --- Note that the following do not put a newline. --- --- >>> putStr "Hello, World!" --- Hello, World! --- --- >>> putStr "\0052\0042\0050" --- 4*2 --- -putStr :: String -> IO () -putStr s = hPutStr stdout s +import GHC.Internal.Base (String) +import GHC.Internal.IO (IO) +import GHC.Internal.IO.Handle.Text (hPutStrLn) +import GHC.Internal.IO.StdHandles (stdout) +import GHC.Internal.Show (Show, show) -- | The same as 'putStr', but adds a newline character. -- @@ -338,485 +57,3 @@ putStrLn s = hPutStrLn stdout s -- [(0,1),(1,2),(2,4),(3,8),(4,16),(5,32),(6,64),(7,128),(8,256)] print :: Show a => a -> IO () print x = putStrLn (show x) - --- | Read a single character from the standard input device. --- --- 'getChar' is implemented as @'hGetChar' 'stdin'@. --- --- This operation may fail with the same errors as 'hGetChar'. --- --- ==== __Examples__ --- --- >>> getChar --- a'a' --- --- >>> getChar --- > --- '\n' -getChar :: IO Char -getChar = hGetChar stdin - --- | Read a line from the standard input device. --- --- 'getLine' is implemented as @'hGetLine' 'stdin'@. --- --- This operation may fail with the same errors as 'hGetLine'. --- --- ==== __Examples__ --- --- >>> getLine --- > Hello World! --- "Hello World!" --- --- >>> getLine --- > --- "" -getLine :: IO String -getLine = hGetLine stdin - --- | The 'getContents' operation returns all user input as a single string, --- which is read lazily as it is needed. --- --- 'getContents' is implemented as @'hGetContents' 'stdin'@. --- --- This operation may fail with the same errors as 'hGetContents'. --- --- ==== __Examples__ --- --- >>> getContents >>= putStr --- > aaabbbccc :D --- aaabbbccc :D --- > I hope you have a great day --- I hope you have a great day --- > ^D --- --- >>> getContents >>= print . length --- > abc --- > <3 --- > def ^D --- 11 -getContents :: IO String -getContents = hGetContents stdin - --- | The 'getContents'' operation returns all user input as a single string, --- which is fully read before being returned --- --- 'getContents'' is implemented as @'hGetContents'' 'stdin'@. --- --- This operation may fail with the same errors as 'hGetContents''. --- --- ==== __Examples__ --- --- >>> getContents' >>= putStr --- > aaabbbccc :D --- > I hope you have a great day --- aaabbbccc :D --- I hope you have a great day --- --- >>> getContents' >>= print . length --- > abc --- > <3 --- > def ^D --- 11 --- --- @since base-4.15.0.0 -getContents' :: IO String -getContents' = hGetContents' stdin - --- | @'interact' f@ takes the entire input from 'stdin' and applies @f@ to it. --- The resulting string is written to the 'stdout' device. --- --- Note that this operation is lazy, which allows to produce output --- even before all input has been consumed. --- --- This operation may fail with the same errors as 'getContents' and 'putStr'. --- --- If it doesn't produce output the buffering settings may not be --- correct, use ^D (ctrl+D) to close stdin which forces --- the buffer to be consumed. --- --- You may wish to set the buffering style appropriate to your program's --- needs before using this function, for example: --- --- @ --- main :: IO () --- main = do --- hSetBuffering stdin LineBuffering --- hSetBuffering stdout NoBuffering --- interact (concatMap (\str -> str ++ str) . L.lines) --- @ --- --- ==== __Examples__ --- --- >>> interact (\str -> str ++ str) --- > hi :) --- hi :) --- > ^D --- hi :) --- --- >>> interact (const ":D") --- :D --- --- >>> interact (show . words) --- > hello world! --- > I hope you have a great day --- > ^D --- ["hello","world!","I","hope","you","have","a","great","day"] -interact :: (String -> String) -> IO () -interact f = do s <- getContents - putStr (f s) - --- | The 'readFile' function reads a file and --- returns the contents of the file as a string. --- --- The file is read lazily, on demand, as with 'getContents'. --- --- This operation may fail with the same errors as 'hGetContents' and 'openFile'. --- --- ==== __Examples__ --- --- >>> readFile "~/hello_world" --- "Greetings!" --- --- >>> take 5 <$> readFile "/dev/zero" --- "\NUL\NUL\NUL\NUL\NUL" -readFile :: FilePath -> IO String -readFile name = openFile name ReadMode >>= hGetContents - --- | The 'readFile'' function reads a file and --- returns the contents of the file as a string. --- --- This is identical to 'readFile', but the file is fully read before being returned, --- as with 'getContents''. --- --- @since base-4.15.0.0 -readFile' :: FilePath -> IO String --- There's a bit of overkill here—both withFile and --- hGetContents' will close the file in the end. -readFile' name = withFile name ReadMode hGetContents' - --- | The computation @'writeFile' file str@ function writes the string @str@, --- to the file @file@. --- --- This operation may fail with the same errors as 'hPutStr' and 'withFile'. --- --- ==== __Examples__ --- --- >>> writeFile "hello" "world" >> readFile "hello" --- "world" --- --- >>> writeFile "~/" "D:" --- *** Exception: ~/: withFile: inappropriate type (Is a directory) -writeFile :: FilePath -> String -> IO () -writeFile f txt = withFile f WriteMode (\ hdl -> hPutStr hdl txt) - --- | The computation @'appendFile' file str@ function appends the string @str@, --- to the file @file@. --- --- Note that 'writeFile' and 'appendFile' write a literal string --- to a file. To write a value of any printable type, as with 'print', --- use the 'show' function to convert the value to a string first. --- --- This operation may fail with the same errors as 'hPutStr' and 'withFile'. --- --- ==== __Examples__ --- --- The following example could be more efficently written by acquiring a handle --- instead with 'openFile' and using the computations capable of writing to handles --- such as 'hPutStr'. --- --- >>> let fn = "hello_world" --- >>> in writeFile fn "hello" >> appendFile fn " world!" >> (readFile fn >>= putStrLn) --- "hello world!" --- --- >>> let fn = "foo"; output = readFile' fn >>= putStrLn --- >>> in output >> appendFile fn (show [1,2,3]) >> output --- this is what's in the file --- this is what's in the file[1,2,3] -appendFile :: FilePath -> String -> IO () -appendFile f txt = withFile f AppendMode (\ hdl -> hPutStr hdl txt) - --- | The 'readLn' function combines 'getLine' and 'readIO'. --- --- This operation may fail with the same errors as 'getLine' and 'readIO'. --- --- ==== __Examples__ --- --- >>> fmap (+ 5) readLn --- > 25 --- 30 --- --- >>> readLn :: IO String --- > this is not a string literal --- *** Exception: user error (Prelude.readIO: no parse) -readLn :: Read a => IO a -readLn = getLine >>= readIO - --- | The 'readIO' function is similar to 'read' except that it signals --- parse failure to the 'IO' monad instead of terminating the program. --- --- This operation may fail with: --- --- * 'GHC.Internal.System.IO.Error.isUserError' if there is no unambiguous parse. --- --- ==== __Examples__ --- --- >>> fmap (+ 1) (readIO "1") --- 2 --- --- >>> readIO "not quite ()" :: IO () --- *** Exception: user error (Prelude.readIO: no parse) -readIO :: Read a => String -> IO a -readIO s = case (do { (x,t) <- reads s ; - ("","") <- lex t ; - return x }) of - [x] -> return x - [] -> ioError (userError "Prelude.readIO: no parse") - _ -> ioError (userError "Prelude.readIO: ambiguous parse") - --- | The encoding of the current locale. --- --- This is the initial locale encoding: if it has been subsequently changed by --- 'GHC.Internal.IO.Encoding.setLocaleEncoding' this value will not reflect that change. -localeEncoding :: TextEncoding -localeEncoding = initLocaleEncoding - --- | Computation 'hReady' @hdl@ indicates whether at least one item is --- available for input from handle @hdl@. --- --- This operation may fail with: --- --- * 'GHC.Internal.System.IO.Error.isEOFError' if the end of file has been reached. -hReady :: Handle -> IO Bool -hReady h = hWaitForInput h 0 - --- | Computation 'hPrint' @hdl t@ writes the string representation of @t@ --- given by the 'show' function to the file or channel managed by @hdl@ --- and appends a newline. --- --- This operation may fail with the same errors as 'hPutStrLn' --- --- ==== __Examples__ --- --- >>> hPrint stdout [1,2,3] --- [1,2,3] --- --- >>> hPrint stdin [4,5,6] --- *** Exception: <stdin>: hPutStr: illegal operation (handle is not open for writing) -hPrint :: Show a => Handle -> a -> IO () -hPrint hdl = hPutStrLn hdl . show - --- | The function creates a temporary file in ReadWrite mode. --- The created file isn\'t deleted automatically, so you need to delete it manually. --- --- The file is created with permissions such that only the current --- user can read\/write it. --- --- With some exceptions (see below), the file will be created securely --- in the sense that an attacker should not be able to cause --- openTempFile to overwrite another file on the filesystem using your --- credentials, by putting symbolic links (on Unix) in the place where --- the temporary file is to be created. On Unix the @O_CREAT@ and --- @O_EXCL@ flags are used to prevent this attack, but note that --- @O_EXCL@ is sometimes not supported on NFS filesystems, so if you --- rely on this behaviour it is best to use local filesystems only. -openTempFile :: FilePath -- ^ Directory in which to create the file - -> String -- ^ File name template. If the template is \"foo.ext\" then - -- the created file will be \"fooXXX.ext\" where XXX is some - -- random number. Note that this should not contain any path - -- separator characters. On Windows, the template prefix may - -- be truncated to 3 chars, e.g. \"foobar.ext\" will be - -- \"fooXXX.ext\". - -> IO (FilePath, Handle) -openTempFile tmp_dir template - = openTempFile' "openTempFile" tmp_dir template False 0o600 - --- | Like 'openTempFile', but opens the file in binary mode. See 'openBinaryFile' for more comments. -openBinaryTempFile :: FilePath -> String -> IO (FilePath, Handle) -openBinaryTempFile tmp_dir template - = openTempFile' "openBinaryTempFile" tmp_dir template True 0o600 - --- | Like 'openTempFile', but uses the default file permissions -openTempFileWithDefaultPermissions :: FilePath -> String - -> IO (FilePath, Handle) -openTempFileWithDefaultPermissions tmp_dir template - = openTempFile' "openTempFileWithDefaultPermissions" tmp_dir template False 0o666 - --- | Like 'openBinaryTempFile', but uses the default file permissions -openBinaryTempFileWithDefaultPermissions :: FilePath -> String - -> IO (FilePath, Handle) -openBinaryTempFileWithDefaultPermissions tmp_dir template - = openTempFile' "openBinaryTempFileWithDefaultPermissions" tmp_dir template True 0o666 - -openTempFile' :: String -> FilePath -> String -> Bool -> CMode - -> IO (FilePath, Handle) -openTempFile' loc tmp_dir template binary mode - | pathSeparator template - = failIO $ "openTempFile': Template string must not contain path separator characters: "++template - | otherwise = findTempName - where - -- We split off the last extension, so we can use .foo.ext files - -- for temporary files (hidden on Unix OSes). Unfortunately we're - -- below filepath in the hierarchy here. - (prefix, suffix) = - case break (== '.') $ reverse template of - -- First case: template contains no '.'s. Just re-reverse it. - (rev_suffix, "") -> (reverse rev_suffix, "") - -- Second case: template contains at least one '.'. Strip the - -- dot from the prefix and prepend it to the suffix (if we don't - -- do this, the unique number will get added after the '.' and - -- thus be part of the extension, which is wrong.) - (rev_suffix, '.':rest) -> (reverse rest, '.':reverse rev_suffix) - -- Otherwise, something is wrong, because (break (== '.')) should - -- always return a pair with either the empty string or a string - -- beginning with '.' as the second component. - _ -> errorWithoutStackTrace "bug in GHC.Internal.System.IO.openTempFile" -#if defined(mingw32_HOST_OS) - findTempName = findTempNamePosix <!> findTempNameWinIO - - findTempNameWinIO = do - let label = if null prefix then "ghc" else prefix - withCWString tmp_dir $ \c_tmp_dir -> - withCWString label $ \c_template -> - withCWString suffix $ \c_suffix -> - with nullPtr $ \c_ptr -> do - res <- c_createUUIDTempFileErrNo c_tmp_dir c_template c_suffix c_ptr - if not res - then do errno <- getErrno - ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) - else do c_p <- peek c_ptr - filename <- peekCWString c_p - free c_p - let flags = fromIntegral mode .&. o_EXCL - handleResultsWinIO filename (flags == o_EXCL) - - findTempNamePosix = do - let label = if null prefix then "ghc" else prefix - withCWString tmp_dir $ \c_tmp_dir -> - withCWString label $ \c_template -> - withCWString suffix $ \c_suffix -> - allocaBytes (sizeOf (undefined :: CWchar) * 260) $ \c_str -> do - res <- c_getTempFileNameErrorNo c_tmp_dir c_template c_suffix 0 - c_str - if not res - then do errno <- getErrno - ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) - else do filename <- peekCWString c_str - handleResultsPosix filename - - handleResultsPosix filename = do - let oflags1 = rw_flags .|. o_EXCL - binary_flags - | binary = o_BINARY - | otherwise = 0 - oflags = oflags1 .|. binary_flags - fd <- withFilePath filename $ \ f -> c_open f oflags mode - case fd < 0 of - True -> do errno <- getErrno - ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) - False -> - do (fD,fd_type) <- FD.mkFD fd ReadWriteMode Nothing{-no stat-} - False{-is_socket-} - True{-is_nonblock-} - - enc <- getLocaleEncoding - h <- POSIX.mkHandleFromFD fD fd_type filename ReadWriteMode - False{-set non-block-} (Just enc) - - return (filename, h) - - handleResultsWinIO filename excl = do - (hwnd, hwnd_type) <- openFileAsTemp filename True excl - mb_codec <- if binary then return Nothing else fmap Just getLocaleEncoding - - -- then use it to make a Handle - h <- mkHandleFromHANDLE hwnd hwnd_type filename ReadWriteMode mb_codec - `onException` IODevice.close hwnd - return (filename, h) - -foreign import ccall "getTempFileNameErrorNo" c_getTempFileNameErrorNo - :: CWString -> CWString -> CWString -> CUInt -> Ptr CWchar -> IO Bool - -foreign import ccall "__createUUIDTempFileErrNo" c_createUUIDTempFileErrNo - :: CWString -> CWString -> CWString -> Ptr CWString -> IO Bool - -pathSeparator :: String -> Bool -pathSeparator template = any (\x-> x == '/' || x == '\\') template - -output_flags = std_flags -#else /* else mingw32_HOST_OS */ - findTempName = do - rs <- rand_string - let filename = prefix ++ rs ++ suffix - filepath = tmp_dir `combine` filename - r <- openNewFile filepath binary mode - case r of - FileExists -> findTempName - OpenNewError errno -> ioError (errnoToIOError loc errno Nothing (Just tmp_dir)) - NewFileCreated fd -> do - (fD,fd_type) <- FD.mkFD fd ReadWriteMode Nothing{-no stat-} - False{-is_socket-} - True{-is_nonblock-} - - enc <- getLocaleEncoding - h <- POSIX.mkHandleFromFD fD fd_type filepath ReadWriteMode False{-set non-block-} (Just enc) - - return (filepath, h) - - where - -- XXX bits copied from System.FilePath, since that's not available here - combine a b - | null b = a - | null a = b - | pathSeparator [last a] = a ++ b - | otherwise = a ++ [pathSeparatorChar] ++ b - -tempCounter :: IORef Int -tempCounter = unsafePerformIO $ newIORef 0 -{-# NOINLINE tempCounter #-} - --- build large digit-alike number -rand_string :: IO String -rand_string = do - r1 <- c_getpid - (r2, _) <- atomicModifyIORef'_ tempCounter (+1) - return $ show r1 ++ "-" ++ show r2 - -data OpenNewFileResult - = NewFileCreated CInt - | FileExists - | OpenNewError Errno - -openNewFile :: FilePath -> Bool -> CMode -> IO OpenNewFileResult -openNewFile filepath binary mode = do - let oflags1 = rw_flags .|. o_EXCL - - binary_flags - | binary = o_BINARY - | otherwise = 0 - - oflags = oflags1 .|. binary_flags - fd <- withFilePath filepath $ \ f -> - c_open f oflags mode - if fd < 0 - then do - errno <- getErrno - case errno of - _ | errno == eEXIST -> return FileExists - _ -> return (OpenNewError errno) - else return (NewFileCreated fd) - --- XXX Should use filepath library -pathSeparatorChar :: Char -pathSeparatorChar = '/' - -pathSeparator :: String -> Bool -pathSeparator template = pathSeparatorChar `elem` template - -output_flags = std_flags .|. o_CREAT -#endif /* mingw32_HOST_OS */ - --- XXX Copied from GHC.Handle -std_flags, output_flags, rw_flags :: CInt -std_flags = o_NONBLOCK .|. o_NOCTTY -rw_flags = output_flags .|. o_RDWR ===================================== testsuite/tests/interface-stability/base-exports.stdout ===================================== @@ -7848,6 +7848,7 @@ module GHC.IO.Handle where hGetEcho :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hGetEncoding :: Handle -> GHC.Internal.Types.IO (GHC.Internal.Maybe.Maybe GHC.Internal.IO.Encoding.Types.TextEncoding) hGetLine :: Handle -> GHC.Internal.Types.IO GHC.Internal.Base.String + hGetNewlineMode :: Handle -> GHC.Internal.Types.IO NewlineMode hGetPosn :: Handle -> GHC.Internal.Types.IO HandlePosn hIsClosed :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hIsEOF :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool @@ -9883,7 +9884,7 @@ module System.Exit where exitWith :: forall a. ExitCode -> GHC.Internal.Types.IO a module System.IO where - -- Safety: Safe + -- Safety: Trustworthy type BufferMode :: * data BufferMode = NoBuffering | LineBuffering | BlockBuffering (GHC.Internal.Maybe.Maybe GHC.Internal.Types.Int) type FilePath :: * ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -7820,6 +7820,7 @@ module GHC.IO.Handle where hGetEcho :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hGetEncoding :: Handle -> GHC.Internal.Types.IO (GHC.Internal.Maybe.Maybe GHC.Internal.IO.Encoding.Types.TextEncoding) hGetLine :: Handle -> GHC.Internal.Types.IO GHC.Internal.Base.String + hGetNewlineMode :: Handle -> GHC.Internal.Types.IO NewlineMode hGetPosn :: Handle -> GHC.Internal.Types.IO HandlePosn hIsClosed :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hIsEOF :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool @@ -9921,7 +9922,7 @@ module System.Exit where exitWith :: forall a. ExitCode -> GHC.Internal.Types.IO a module System.IO where - -- Safety: Safe + -- Safety: Trustworthy type BufferMode :: * data BufferMode = NoBuffering | LineBuffering | BlockBuffering (GHC.Internal.Maybe.Maybe GHC.Internal.Types.Int) type FilePath :: * ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -8012,6 +8012,7 @@ module GHC.IO.Handle where hGetEcho :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hGetEncoding :: Handle -> GHC.Internal.Types.IO (GHC.Internal.Maybe.Maybe GHC.Internal.IO.Encoding.Types.TextEncoding) hGetLine :: Handle -> GHC.Internal.Types.IO GHC.Internal.Base.String + hGetNewlineMode :: Handle -> GHC.Internal.Types.IO NewlineMode hGetPosn :: Handle -> GHC.Internal.Types.IO HandlePosn hIsClosed :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hIsEOF :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool @@ -10163,7 +10164,7 @@ module System.Exit where exitWith :: forall a. ExitCode -> GHC.Internal.Types.IO a module System.IO where - -- Safety: Safe + -- Safety: Trustworthy type BufferMode :: * data BufferMode = NoBuffering | LineBuffering | BlockBuffering (GHC.Internal.Maybe.Maybe GHC.Internal.Types.Int) type FilePath :: * ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -7848,6 +7848,7 @@ module GHC.IO.Handle where hGetEcho :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hGetEncoding :: Handle -> GHC.Internal.Types.IO (GHC.Internal.Maybe.Maybe GHC.Internal.IO.Encoding.Types.TextEncoding) hGetLine :: Handle -> GHC.Internal.Types.IO GHC.Internal.Base.String + hGetNewlineMode :: Handle -> GHC.Internal.Types.IO NewlineMode hGetPosn :: Handle -> GHC.Internal.Types.IO HandlePosn hIsClosed :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool hIsEOF :: Handle -> GHC.Internal.Types.IO GHC.Internal.Types.Bool @@ -9883,7 +9884,7 @@ module System.Exit where exitWith :: forall a. ExitCode -> GHC.Internal.Types.IO a module System.IO where - -- Safety: Safe + -- Safety: Trustworthy type BufferMode :: * data BufferMode = NoBuffering | LineBuffering | BlockBuffering (GHC.Internal.Maybe.Maybe GHC.Internal.Types.Int) type FilePath :: * ===================================== testsuite/tests/typecheck/should_compile/T9497a.stderr ===================================== @@ -1,4 +1,3 @@ - T9497a.hs:2:8: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] • Found hole: _main :: IO () Or perhaps ‘_main’ is mis-spelled, or not in scope @@ -8,8 +7,7 @@ T9497a.hs:2:8: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] main :: IO () (bound at T9497a.hs:2:1) readLn :: forall a. Read a => IO a with readLn @() - (imported from ‘Prelude’ - (and originally defined in ‘GHC.Internal.System.IO’)) + (imported from ‘Prelude’ (and originally defined in ‘System.IO’)) mempty :: forall a. Monoid a => a with mempty @(IO ()) (imported from ‘Prelude’ ===================================== testsuite/tests/typecheck/should_compile/holes.stderr ===================================== @@ -45,6 +45,15 @@ holes.hs:11:15: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] y :: [a] z :: [a] -> [a] f :: forall {p}. p + appendFile :: FilePath -> String -> IO () + getChar :: IO Char + getContents :: IO String + getLine :: IO String + interact :: (String -> String) -> IO () + putChar :: Char -> IO () + putStr :: String -> IO () + readFile :: FilePath -> IO String + writeFile :: FilePath -> String -> IO () otherwise :: Bool (&&) :: Bool -> Bool -> Bool not :: Bool -> Bool @@ -58,16 +67,7 @@ holes.hs:11:15: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] showChar :: Char -> ShowS showParen :: Bool -> ShowS -> ShowS showString :: String -> ShowS - appendFile :: FilePath -> String -> IO () - getChar :: IO Char - getContents :: IO String - getLine :: IO String - interact :: (String -> String) -> IO () - putChar :: Char -> IO () - putStr :: String -> IO () putStrLn :: String -> IO () - readFile :: FilePath -> IO String - writeFile :: FilePath -> String -> IO () EQ :: Ordering GT :: Ordering LT :: Ordering ===================================== testsuite/tests/typecheck/should_compile/holes3.stderr ===================================== @@ -48,6 +48,15 @@ holes3.hs:11:15: error: [GHC-88464] y :: [a] z :: [a] -> [a] f :: forall {p}. p + appendFile :: FilePath -> String -> IO () + getChar :: IO Char + getContents :: IO String + getLine :: IO String + interact :: (String -> String) -> IO () + putChar :: Char -> IO () + putStr :: String -> IO () + readFile :: FilePath -> IO String + writeFile :: FilePath -> String -> IO () otherwise :: Bool (&&) :: Bool -> Bool -> Bool not :: Bool -> Bool @@ -61,16 +70,7 @@ holes3.hs:11:15: error: [GHC-88464] showChar :: Char -> ShowS showParen :: Bool -> ShowS -> ShowS showString :: String -> ShowS - appendFile :: FilePath -> String -> IO () - getChar :: IO Char - getContents :: IO String - getLine :: IO String - interact :: (String -> String) -> IO () - putChar :: Char -> IO () - putStr :: String -> IO () putStrLn :: String -> IO () - readFile :: FilePath -> IO String - writeFile :: FilePath -> String -> IO () EQ :: Ordering GT :: Ordering LT :: Ordering ===================================== testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr ===================================== @@ -234,15 +234,14 @@ valid_hole_fits.hs:41:8: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] Valid hole fits include ps :: String -> IO () (defined at valid_hole_fits.hs:9:1) System.IO.putStr :: String -> IO () - (imported qualified from ‘System.IO’ at valid_hole_fits.hs:4:29-34 - (and originally defined in ‘GHC.Internal.System.IO’)) + (imported qualified from ‘System.IO’ at valid_hole_fits.hs:4:29-34) System.IO.putStrLn :: String -> IO () (imported qualified from ‘System.IO’ at valid_hole_fits.hs:4:37-44 (and originally defined in ‘GHC.Internal.System.IO’)) readIO :: forall a. Read a => String -> IO a with readIO @() (imported from ‘Prelude’ at valid_hole_fits.hs:3:1-40 - (and originally defined in ‘GHC.Internal.System.IO’)) + (and originally defined in ‘System.IO’)) fail :: forall (m :: * -> *) a. (MonadFail m, GHC.Internal.Stack.Types.HasCallStack) => String -> m a ===================================== testsuite/tests/typecheck/should_fail/T9497d.stderr ===================================== @@ -8,8 +8,7 @@ T9497d.hs:2:8: error: [GHC-88464] main :: IO () (bound at T9497d.hs:2:1) readLn :: forall a. Read a => IO a with readLn @() - (imported from ‘Prelude’ - (and originally defined in ‘GHC.Internal.System.IO’)) + (imported from ‘Prelude’ (and originally defined in ‘System.IO’)) mempty :: forall a. Monoid a => a with mempty @(IO ()) (imported from ‘Prelude’ ===================================== testsuite/tests/typecheck/should_run/T9497a-run.stderr ===================================== @@ -10,8 +10,7 @@ T9497a-run.hs:2:8: error: [GHC-88464] main :: IO () (bound at T9497a-run.hs:2:1) readLn :: forall a. Read a => IO a with readLn @() - (imported from ‘Prelude’ - (and originally defined in ‘GHC.Internal.System.IO’)) + (imported from ‘Prelude’ (and originally defined in ‘System.IO’)) mempty :: forall a. Monoid a => a with mempty @(IO ()) (imported from ‘Prelude’ ===================================== testsuite/tests/typecheck/should_run/T9497b-run.stderr ===================================== @@ -10,8 +10,7 @@ T9497b-run.hs:2:8: error: [GHC-88464] main :: IO () (bound at T9497b-run.hs:2:1) readLn :: forall a. Read a => IO a with readLn @() - (imported from ‘Prelude’ - (and originally defined in ‘GHC.Internal.System.IO’)) + (imported from ‘Prelude’ (and originally defined in ‘System.IO’)) mempty :: forall a. Monoid a => a with mempty @(IO ()) (imported from ‘Prelude’ ===================================== testsuite/tests/typecheck/should_run/T9497c-run.stderr ===================================== @@ -10,8 +10,7 @@ T9497c-run.hs:2:8: error: [GHC-88464] main :: IO () (bound at T9497c-run.hs:2:1) readLn :: forall a. Read a => IO a with readLn @() - (imported from ‘Prelude’ - (and originally defined in ‘GHC.Internal.System.IO’)) + (imported from ‘Prelude’ (and originally defined in ‘System.IO’)) mempty :: forall a. Monoid a => a with mempty @(IO ()) (imported from ‘Prelude’ ===================================== utils/haddock/html-test/ref/Bug1004.html ===================================== @@ -627,13 +627,13 @@ >liftReadsPrec</a > :: (<a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a - > a) -> <a href="#" title="Prelude" + > a) -> <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a > [a] -> <a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a > (<a href="#" title="Bug1004" >Product</a @@ -645,11 +645,11 @@ >liftReadList</a > :: (<a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a - > a) -> <a href="#" title="Prelude" + > a) -> <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a - > [a] -> <a href="#" title="Prelude" + > [a] -> <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a > [<a href="#" title="Bug1004" >Product</a @@ -735,15 +735,15 @@ >liftShowsPrec</a > :: (<a href="#" title="Data.Int" >Int</a - > -> a -> <a href="#" title="Prelude" + > -> a -> <a href="#" title="Text.Show" >ShowS</a - >) -> ([a] -> <a href="#" title="Prelude" + >) -> ([a] -> <a href="#" title="Text.Show" >ShowS</a >) -> <a href="#" title="Data.Int" >Int</a > -> <a href="#" title="Bug1004" >Product</a - > f g a -> <a href="#" title="Prelude" + > f g a -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a @@ -753,13 +753,13 @@ >liftShowList</a > :: (<a href="#" title="Data.Int" >Int</a - > -> a -> <a href="#" title="Prelude" + > -> a -> <a href="#" title="Text.Show" >ShowS</a - >) -> ([a] -> <a href="#" title="Prelude" + >) -> ([a] -> <a href="#" title="Text.Show" >ShowS</a >) -> [<a href="#" title="Bug1004" >Product</a - > f g a] -> <a href="#" title="Prelude" + > f g a] -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a @@ -2563,15 +2563,15 @@ > (<a href="#" title="Prelude" + ><a href="#" title="Text.Read" >Read</a > (f a), <a href="#" title="Prelude" + ><a href="#" title="Text.Read" >Read</a > (g a)) => <a href="#" title="Prelude" + > => <a href="#" title="Text.Read" >Read</a > (<a href="#" title="Bug1004" >Product</a @@ -2603,7 +2603,7 @@ >readsPrec</a > :: <a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a > (<a href="#" title="Bug1004" >Product</a @@ -2613,7 +2613,7 @@ ><a href="#" >readList</a - > :: <a href="#" title="Prelude" + > :: <a href="#" title="Text.ParserCombinators.ReadP" >ReadS</a > [<a href="#" title="Bug1004" >Product</a @@ -2651,15 +2651,15 @@ > (<a href="#" title="Prelude" + ><a href="#" title="Text.Show" >Show</a > (f a), <a href="#" title="Prelude" + ><a href="#" title="Text.Show" >Show</a > (g a)) => <a href="#" title="Prelude" + > => <a href="#" title="Text.Show" >Show</a > (<a href="#" title="Bug1004" >Product</a @@ -2693,7 +2693,7 @@ >Int</a > -> <a href="#" title="Bug1004" >Product</a - > f g a -> <a href="#" title="Prelude" + > f g a -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a @@ -2713,7 +2713,7 @@ >showList</a > :: [<a href="#" title="Bug1004" >Product</a - > f g a] -> <a href="#" title="Prelude" + > f g a] -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a ===================================== utils/haddock/html-test/ref/Bug973.html ===================================== @@ -58,11 +58,11 @@ >showRead</a > :: (<a href="#" title="Prelude" + ><a href="#" title="Text.Show" >Show</a > a, <a href="#" title="Prelude" + ><a href="#" title="Text.Read" >Read</a > b)forall b a. (<a href="#" title="Prelude" + ><a href="#" title="Text.Show" >Show</a > a, <a href="#" title="Prelude" + ><a href="#" title="Text.Read" >Read</a > b)<td class="src" >:: (<a href="#" title="Prelude" + ><a href="#" title="Text.Show" >Show</a > a, <a href="#" title="Prelude" + ><a href="#" title="Text.Read" >Read</a > b)forall b a. (<a href="#" title="Prelude" + ><a href="#" title="Text.Show" >Show</a > a, <a href="#" title="Prelude" + ><a href="#" title="Text.Read" >Read</a > b)pattern <a id="v:BlubCons" class="def" >BlubCons</a - > :: () => <a href="#" title="Prelude" + > :: () => <a href="#" title="Text.Show" >Show</a > b => b -> Blub <a href="#" class="selflink" >#</a ===================================== utils/haddock/html-test/ref/DefaultSignatures.html ===================================== @@ -133,7 +133,7 @@ >default <a id="v:bar" class="def" >bar</a - > :: <a href="#" title="Prelude" + > :: <a href="#" title="Text.Show" >Show</a > a => a -> <a href="#" title="Data.String" >String</a @@ -177,7 +177,7 @@ >default <a id="v:baz-39-" class="def" >baz'</a - > :: <a href="#" title="Prelude" + > :: <a href="#" title="Text.Read" >Read</a > a => <a href="#" title="Data.String" >String</a ===================================== utils/haddock/html-test/ref/Hash.html ===================================== @@ -111,7 +111,7 @@ >) => <a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="System.IO" >IO</a > (<a href="#" title="Hash" >HashTable</a @@ -129,7 +129,7 @@ >Hash</a > key) => key -> val -> <a href="#" title="Prelude" + > => key -> val -> <a href="#" title="System.IO" >IO</a > ()</li ><li class="src short" @@ -137,7 +137,7 @@ >lookup</a > :: <a href="#" title="Hash" >Hash</a - > key => key -> <a href="#" title="Prelude" + > key => key -> <a href="#" title="System.IO" >IO</a > (<a href="#" title="Data.Maybe" >Maybe</a @@ -215,7 +215,7 @@ >) => <a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="System.IO" >IO</a > (<a href="#" title="Hash" >HashTable</a @@ -241,7 +241,7 @@ >Hash</a > key) => key -> val -> <a href="#" title="Prelude" + > => key -> val -> <a href="#" title="System.IO" >IO</a > () <a href="#" class="selflink" >#</a @@ -257,7 +257,7 @@ >lookup</a > :: <a href="#" title="Hash" >Hash</a - > key => key -> <a href="#" title="Prelude" + > key => key -> <a href="#" title="System.IO" >IO</a > (<a href="#" title="Data.Maybe" >Maybe</a ===================================== utils/haddock/html-test/ref/PatternSyns.html ===================================== @@ -104,7 +104,7 @@ >data <a href="#" >BlubType</a - > = <a href="#" title="Prelude" + > = <a href="#" title="Text.Show" >Show</a > x => <a href="#" >BlubCtor</a @@ -114,7 +114,7 @@ >pattern <a href="#" >Blub</a - > :: () => <a href="#" title="Prelude" + > :: () => <a href="#" title="Text.Show" >Show</a > x => x -> <a href="#" title="PatternSyns" >BlubType</a @@ -266,7 +266,7 @@ ><table ><tr ><td class="src" - ><a href="#" title="Prelude" + ><a href="#" title="Text.Show" >Show</a > x => <a id="v:BlubCtor" class="def" >BlubCtor</a @@ -283,7 +283,7 @@ >pattern <a id="v:Blub" class="def" >Blub</a - > :: () => <a href="#" title="Prelude" + > :: () => <a href="#" title="Text.Show" >Show</a > x => x -> <a href="#" title="PatternSyns" >BlubType</a ===================================== utils/haddock/html-test/ref/PatternSyns2.html ===================================== @@ -145,7 +145,7 @@ >P</a > :: () => forall k (a :: k) b. <a href="#" title="Prelude" + > k (a :: k) b. <a href="#" title="Text.Show" >Show</a > b => <a href="#" title="Data.Proxy" >Proxy</a ===================================== utils/haddock/html-test/ref/QuasiExpr.html ===================================== @@ -122,7 +122,7 @@ > <a href="#" title="Prelude" + > <a href="#" title="Text.Show" >Show</a > <a href="#" title="QuasiExpr" >Expr</a @@ -152,7 +152,7 @@ >Int</a > -> <a href="#" title="QuasiExpr" >Expr</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a @@ -172,7 +172,7 @@ >showList</a > :: [<a href="#" title="QuasiExpr" >Expr</a - >] -> <a href="#" title="Prelude" + >] -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a @@ -244,7 +244,7 @@ > <a href="#" title="Prelude" + > <a href="#" title="Text.Show" >Show</a > <a href="#" title="QuasiExpr" >BinOp</a @@ -274,7 +274,7 @@ >Int</a > -> <a href="#" title="QuasiExpr" >BinOp</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a @@ -294,7 +294,7 @@ >showList</a > :: [<a href="#" title="QuasiExpr" >BinOp</a - >] -> <a href="#" title="Prelude" + >] -> <a href="#" title="Text.Show" >ShowS</a > <a href="#" class="selflink" >#</a ===================================== utils/haddock/html-test/ref/Test.html ===================================== @@ -521,7 +521,7 @@ ><li ><a href="#" >a</a - > :: <a href="#" title="Prelude" + > :: <a href="#" title="System.IO" >IO</a > a</li ><li @@ -575,7 +575,7 @@ >a</a > :: <a href="#" title="Test" >C</a - > a => <a href="#" title="Prelude" + > a => <a href="#" title="System.IO" >IO</a > a</li ><li class="src short" @@ -591,7 +591,7 @@ >g</a > :: <a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="System.IO" >IO</a > CInt</li ><li class="src short" @@ -661,7 +661,7 @@ >Float</a >) -> <a href="#" title="Test" >T5</a - > () () -> <a href="#" title="Prelude" + > () () -> <a href="#" title="System.IO" >IO</a > ()</li ><li class="src short" @@ -683,7 +683,7 @@ >R</a > -> <a href="#" title="Test" >N1</a - > () -> <a href="#" title="Prelude" + > () -> <a href="#" title="System.IO" >IO</a > <a href="#" title="Data.Int" >Int</a @@ -693,7 +693,7 @@ >o</a > :: <a href="#" title="Prelude" >Float</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="System.IO" >IO</a > <a href="#" title="Prelude" >Float</a @@ -1674,7 +1674,7 @@ ><a id="v:a" class="def" >a</a - > :: <a href="#" title="Prelude" + > :: <a href="#" title="System.IO" >IO</a > a <a href="#" class="selflink" >#</a @@ -1903,7 +1903,7 @@ >a</a > :: <a href="#" title="Test" >C</a - > a => <a href="#" title="Prelude" + > a => <a href="#" title="System.IO" >IO</a > a <a href="#" class="selflink" >#</a @@ -1991,7 +1991,7 @@ using double quotes: <a href="#" >g</a > :: <a href="#" title="Data.Int" >Int</a - > -> <a href="#" title="Prelude" + > -> <a href="#" title="System.IO" >IO</a > CInt <a href="#" class="selflink" >#</a @@ -2267,7 +2267,7 @@ is at the beginning of the line).</pre ></tr ><tr ><td class="src" - >-> <a href="#" title="Prelude" + >-> <a href="#" title="System.IO" >IO</a > ()</td ><td class="doc" @@ -2355,7 +2355,7 @@ is at the beginning of the line).</pre ></tr ><tr ><td class="src" - >-> <a href="#" title="Prelude" + >-> <a href="#" title="System.IO" >IO</a > <a href="#" title="Data.Int" >Int</a @@ -2395,7 +2395,7 @@ is at the beginning of the line).</pre ></tr ><tr ><td class="src" - >-> <a href="#" title="Prelude" + >-> <a href="#" title="System.IO" >IO</a > <a href="#" title="Prelude" >Float</a View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7436dd5a3407b32597c9c220864756b… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7436dd5a3407b32597c9c220864756b… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/spj-apporv-Oct24] 8 commits: Introduce `-fimport-loaded-targets` GHCi flag
by Apoorv Ingle (＠ani) 19 Mar '26

19 Mar '26

Apoorv Ingle pushed to branch wip/spj-apporv-Oct24 at Glasgow Haskell Compiler / GHC Commits: 86bd9bfc by fendor at 2026-03-17T23:46:09-04:00 Introduce `-fimport-loaded-targets` GHCi flag This new flag automatically adds all loaded targets to the GHCi session by adding an `InteractiveImport` for the loaded targets. By default, this flag is disabled, as it potentially increases memory-usage. This interacts with the flag `-fno-load-initial-targets` as follows: * If no module is loaded, no module is added as an interactive import. * If a reload loads up to a module, all loaded modules are added as interactive imports. * Unloading modules removes them from the interactive context. Fixes #26866 by rendering the use of a `-ghci-script` to achieve the same thing redundant. - - - - - e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Remove GHC.Internal.Data.Eq It served no purpose other than being a re-export. - - - - - 6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Refine GHC.Internal.Base imports Removed re-exports from GHC.Internal.Base. This reveals some modules that don't actually use anything *defined* in GHC.Internal.Base, and that can be pushed down a little in the import graph. Replaced most imports of GHC.Internal.Base with non-wildcard imports from modules where the identifiers are actually defined. Part of #26834 Metric Decrease: T5321FD - - - - - 7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00 ci: clone, don't copy when creating the cabal cache Also removed WINDOWS_HOST variable detected via uname - we now just check whether the CI job has windows in its name. This works because we only ever care about it if the respective job is not a cross job. We also statically detect darwin cross jobs in the same way. We only ever have darwin -> darwin cross jobs so this is enough to detect the host reliably. - - - - - f8817879 by mangoiv at 2026-03-17T23:48:44-04:00 ci: mark size_hello_artifact fragile on darwin x86 The size of the x86_64 hello artifact is not stable which results in flaky testruns. Resolves #26814 - - - - - 00e57b88 by Apoorv Ingle at 2026-03-18T18:41:36-05:00 Work for #25001 Notes added [Error Context Stack] [Typechecking by expansion: overview] Notes updated Note [Expanding HsDo with XXExprGhcRn] ------------------------- Metric Decrease: T9020 ------------------------- * Streamlines implementations of `tcExpr` and `tcXExpr` to work on `XExpr` * Kills `VACtxt` (and its associated `VAExpansion` and `VACall`) datatype, it is subsumed by simply a `SrcSpan`. * Kills the function `addHeadCtxt` as it is now mearly setting a location * The function `tcValArgs` does its own argument number management * Makes `splitHsApps` not look through `XExpr` * `tcExprSigma` is called if the head of the expression after calling `splitHsApps` turns out to be an `XExpr` * Removes location information from `OrigPat` payload * Removes special case of tcBody from `tcLambdaMatches` * Removes special case of `dsExpr` for `ExpandedThingTc` * Rename `HsThingRn` to `SrcCodeCtxt` * Kills `tcl_in_gen_code` and `tcl_err_ctxt`. It is subsumed by `ErrCtxtStack` * Kills `ExpectedFunTyOrig`. It is subsumed by `CtOrigin` * Fixes `CtOrigin` for `HsProjection` case in `exprCtOrigin`. It was previously assigned to be `SectionOrigin`. It is now just the expression * Adds a new `CtOrigin.ExpansionOrigin` for storing the original syntax * Adds a new `CtOrigin.ExpectedTySyntax` as a replacement for `ExpectedTySyntaxOp`. Cannot kill the former yet because of `ApplicativeDo` * Renames `tcMonoExpr` -> `tcMonoLExpr`, `tcMonoExprNC` -> `tcMonoLExpr` * Renames `EValArg`, `EValArgQL` fields: `ea_ctxt` -> `ea_loc_span` and `eaql_ctx` -> `eaql_loc_span` * kill `PopErrCtxt` from `XXExprGhcRn` * simplify `addArgCtxt` and push `setSrcSpan` inside `addLExprCtxt`. Make sure addExprCtxt is not called by itself * fun_orig in tcApp depends on the SrcSpan of the head of the application chain (similar to addArgCtxt) * rename fun_ctxt to fun_lspan, fun_orig passed in tcInstFun to default to app chain head if its user located, fall back to srcCodeOrigin if it's a generated location * fix quickLookArg function to blame the correct application chain head. The arguments application chain head should be blamed, not the original head when we quick look arg * Make sure only expression wrapped around generated src span are ignored while adding them to the error context stack * `getDeepSubsumptionFlag_DataConHead` performs a non-trivial traversal if the expression passed to it is complex. This traversal is necessary if the head of the function is an `XExpr` and `splitHsApps` does not look through them - The deepsubsumption flag is stored in EVAlArgQL to reduce the need to call `getDeepSubsumptionFlag_DataConHead` - `getDeepSubsumptionFlag_DataConHead` is called in `tcExprSigma` and `tcInferAppHead` to reduce AST traversals * Make a new variant `GeneratedSrcSpan` in `SrcSpan` for HIEAst Nodes * wrap `fromListN` with a generated src span with GeneratedSrcSpanDetails field to store the original srcspan * remove `UnhelpfulGenerated` from `UnhelpfulSpanReason` and into new datatype `GeneratedSrcSpanDetails` * trying to remove SrcCodeOrigin by merging it with ErrCtxtMsg * ErrCtxtMsg is now HsCtxt * Landmarks are now just computed on the fly * killed off CodeSrcFlag - - - - - 54f9418c by Apoorv Ingle at 2026-03-18T18:41:36-05:00 make HsExpandedRn and HsExpandedTc payload LExpr, add tcExpand for expanding Do expressions before typechecking in tcExpr - - - - - 37920b94 by Apoorv Ingle at 2026-03-19T13:36:58-05:00 * make HsExpandedRn and HsExpandedTc payload LExpr, HsExpand to mediate between expansion and typechecking * add tcHsExpand type checking expanded Expressions * remove setInGeneratedCode - - - - - 400 changed files: - .gitlab/ci.sh - compiler/GHC.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/DocString.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Expr.hs-boot - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Syn/Type.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/HsToCore/Pmc.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Ext/Utils.hs - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Debugger/Breakpoints.hs - compiler/GHC/Tc/Deriv.hs - compiler/GHC/Tc/Deriv/Infer.hs - compiler/GHC/Tc/Deriv/Utils.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/App.hs - + compiler/GHC/Tc/Gen/App.hs-boot - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Do.hs - compiler/GHC/Tc/Gen/Export.hs - compiler/GHC/Tc/Gen/Expr.hs - compiler/GHC/Tc/Gen/Expr.hs-boot - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/HsType.hs - compiler/GHC/Tc/Gen/Match.hs - compiler/GHC/Tc/Gen/Match.hs-boot - compiler/GHC/Tc/Gen/Pat.hs - compiler/GHC/Tc/Gen/Sig.hs - compiler/GHC/Tc/Gen/Splice.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Module.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/TyCl.hs - compiler/GHC/Tc/TyCl/Class.hs - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/TyCl/PatSyn.hs - compiler/GHC/Tc/Types.hs - compiler/GHC/Tc/Types/BasicTypes.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/CtLoc.hs - compiler/GHC/Tc/Types/ErrCtxt.hs - compiler/GHC/Tc/Types/LclEnv.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Types/Origin.hs-boot - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcType.hs-boot - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Validity.hs - compiler/GHC/Tc/Zonk/TcType.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/Types/Error.hs - + compiler/GHC/Types/Error.hs-boot - compiler/GHC/Types/Hint/Ppr.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/SrcLoc.hs - + compiler/GHC/Unit/State.hs-boot - compiler/GHC/Utils/Binary.hs - compiler/GHC/Utils/Logger.hs - docs/users_guide/ghci.rst - ghc/GHCi/UI.hs - ghc/GHCi/UI/Info.hs - libraries/base/src/Control/Applicative.hs - libraries/base/src/Data/Char.hs - libraries/base/src/Data/Eq.hs - libraries/base/src/Data/Semigroup.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Weak/Finalize.hs - libraries/base/src/Prelude.hs - libraries/ghc-experimental/src/GHC/Profiling/Eras.hs - libraries/ghc-internal/codepages/MakeTable.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs - libraries/ghc-internal/src/GHC/Internal/Arr.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Bits.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - libraries/ghc-internal/src/GHC/Internal/Char.hs - libraries/ghc-internal/src/GHC/Internal/Clock.hsc - libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs - libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc - libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs - libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs - libraries/ghc-internal/src/GHC/Internal/Data/Data.hs - libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs - libraries/ghc-internal/src/GHC/Internal/Data/Either.hs - − libraries/ghc-internal/src/GHC/Internal/Data/Eq.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Function.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Utils.hs - libraries/ghc-internal/src/GHC/Internal/Data/IORef.hs - libraries/ghc-internal/src/GHC/Internal/Data/List.hs - libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs - libraries/ghc-internal/src/GHC/Internal/Data/Ord.hs - libraries/ghc-internal/src/GHC/Internal/Data/Proxy.hs - libraries/ghc-internal/src/GHC/Internal/Data/STRef.hs - libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/String.hs - libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Bool.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Coercion.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Equality.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Ord.hs - libraries/ghc-internal/src/GHC/Internal/Data/Typeable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/Unique.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs - libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs-boot - libraries/ghc-internal/src/GHC/Internal/Encoding/UTF8.hs - libraries/ghc-internal/src/GHC/Internal/Enum.hs - libraries/ghc-internal/src/GHC/Internal/Environment.hs - libraries/ghc-internal/src/GHC/Internal/Event/Array.hs - libraries/ghc-internal/src/GHC/Internal/Event/Control.hs - libraries/ghc-internal/src/GHC/Internal/Event/EPoll.hsc - libraries/ghc-internal/src/GHC/Internal/Event/IntVar.hs - libraries/ghc-internal/src/GHC/Internal/Event/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Event/Internal/Types.hs - libraries/ghc-internal/src/GHC/Internal/Event/KQueue.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Manager.hs - libraries/ghc-internal/src/GHC/Internal/Event/PSQ.hs - libraries/ghc-internal/src/GHC/Internal/Event/Poll.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Thread.hs - libraries/ghc-internal/src/GHC/Internal/Event/TimeOut.hs - libraries/ghc-internal/src/GHC/Internal/Event/TimerManager.hs - libraries/ghc-internal/src/GHC/Internal/Event/Unique.hs - libraries/ghc-internal/src/GHC/Internal/Event/Windows.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Windows/Clock.hs - libraries/ghc-internal/src/GHC/Internal/Event/Windows/ConsoleEvent.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Windows/FFI.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Windows/ManagedThreadPool.hs - libraries/ghc-internal/src/GHC/Internal/Event/Windows/Thread.hs - libraries/ghc-internal/src/GHC/Internal/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs - libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs-boot - libraries/ghc-internal/src/GHC/Internal/Exception/Context.hs - libraries/ghc-internal/src/GHC/Internal/Exception/Type.hs - libraries/ghc-internal/src/GHC/Internal/ExecutionStack.hs - libraries/ghc-internal/src/GHC/Internal/ExecutionStack/Internal.hsc - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs - libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs-boot - libraries/ghc-internal/src/GHC/Internal/Fingerprint/Type.hs - libraries/ghc-internal/src/GHC/Internal/Float.hs - libraries/ghc-internal/src/GHC/Internal/Float/ConversionUtils.hs - libraries/ghc-internal/src/GHC/Internal/Float/RealFracMethods.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/ConstPtr.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/Error.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/String.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/String/Encoding.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/Types.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/ForeignPtr/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Alloc.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Array.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Error.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Pool.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Utils.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Ptr.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Storable.hs - libraries/ghc-internal/src/GHC/Internal/ForeignPtr.hs - libraries/ghc-internal/src/GHC/Internal/ForeignSrcLang.hs - libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs - libraries/ghc-internal/src/GHC/Internal/GHCi.hs - libraries/ghc-internal/src/GHC/Internal/GHCi/Helpers.hs - libraries/ghc-internal/src/GHC/Internal/Generics.hs - libraries/ghc-internal/src/GHC/Internal/Heap/Closures.hs - libraries/ghc-internal/src/GHC/Internal/Heap/InfoTable.hsc - libraries/ghc-internal/src/GHC/Internal/Heap/InfoTable/Types.hsc - libraries/ghc-internal/src/GHC/Internal/Heap/InfoTableProf.hsc - libraries/ghc-internal/src/GHC/Internal/Heap/ProfInfo/Types.hs - libraries/ghc-internal/src/GHC/Internal/IO.hs - libraries/ghc-internal/src/GHC/Internal/IO/Buffer.hs - libraries/ghc-internal/src/GHC/Internal/IO/BufferedIO.hs - libraries/ghc-internal/src/GHC/Internal/IO/Device.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/CodePage.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/CodePage/API.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/CodePage/Table.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Failure.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Iconv.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Latin1.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Types.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/UTF16.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/UTF32.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/UTF8.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs-boot - libraries/ghc-internal/src/GHC/Internal/IO/FD.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/FD.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Internals.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock/Flock.hsc - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock/LinuxOFD.hsc - 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testsuite/tests/profiling/should_run/callstack002.stdout - testsuite/tests/rebindable/rebindable6.stderr - testsuite/tests/rep-poly/RepPolyDoBind.stderr - testsuite/tests/rep-poly/RepPolyDoBody1.stderr - testsuite/tests/rep-poly/RepPolyDoBody2.stderr - testsuite/tests/rep-poly/RepPolyRecordUpdate.stderr - + testsuite/tests/typecheck/should_compile/ExpansionQLIm.hs - testsuite/tests/typecheck/should_compile/T14590.stderr - testsuite/tests/typecheck/should_compile/all.T - testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr - testsuite/tests/typecheck/should_fail/DoExpansion1.stderr - testsuite/tests/typecheck/should_fail/DoExpansion2.stderr - testsuite/tests/typecheck/should_fail/T10971d.stderr - testsuite/tests/typecheck/should_fail/T13311.stderr - testsuite/tests/typecheck/should_fail/T3323.stderr - testsuite/tests/typecheck/should_fail/T3613.stderr - testsuite/tests/typecheck/should_fail/T6069.stderr - testsuite/tests/typecheck/should_fail/T7851.stderr - testsuite/tests/typecheck/should_fail/T7857.stderr - testsuite/tests/typecheck/should_fail/T8603.stderr - testsuite/tests/typecheck/should_fail/T9612.stderr - testsuite/tests/typecheck/should_fail/tcfail102.stderr - testsuite/tests/typecheck/should_fail/tcfail128.stderr - testsuite/tests/typecheck/should_fail/tcfail140.stderr - testsuite/tests/typecheck/should_fail/tcfail181.stderr - utils/check-exact/ExactPrint.hs - utils/check-exact/Parsers.hs - utils/check-exact/Transform.hs - utils/check-exact/Utils.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c056178d3cf80e950aaca2a96d3868… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c056178d3cf80e950aaca2a96d3868… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/spj-reinstallable-base] Onward... [skip ci]
by Simon Peyton Jones (＠simonpj) 19 Mar '26

19 Mar '26

Simon Peyton Jones pushed to branch wip/spj-reinstallable-base at Glasgow Haskell Compiler / GHC Commits: 54a71f69 by Simon Peyton Jones at 2026-03-19T17:46:04+00:00 Onward... [skip ci] - - - - - 8 changed files: - compiler/GHC/Builtin/Names.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/Iface/Errors/Ppr.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Rename/Env.hs - compiler/GHC/Tc/Deriv/Infer.hs - compiler/GHC/Tc/Types.hs - libraries/base/src/GHC/KnownKeyNames.hs Changes: ===================================== compiler/GHC/Builtin/Names.hs ===================================== @@ -210,6 +210,7 @@ basicKnownKeyTable , (mkTcOcc "Bounded", boundedClassKey) , (mkTcOcc "Enum", enumClassKey) , (mkTcOcc "Monad", monadClassKey) + , (mkTcOcc "Functor", functorClassKey) ] basicKnownKeyNames :: [Name] -- See Note [Known-key names] @@ -218,7 +219,6 @@ basicKnownKeyNames ++ [ -- Classes. *Must* include: -- classes that are grabbed by key (e.g., eqClassKey) -- classes in "Class.standardClassKeys" (quite a few) - functorClassName, realClassName, -- numeric integralClassName, -- numeric fractionalClassName, -- numeric ===================================== compiler/GHC/HsToCore/Monad.hs ===================================== @@ -563,7 +563,7 @@ mkNamePprCtxDs = ds_name_ppr_ctx <$> getGblEnv instance MonadThings (IOEnv (Env DsGblEnv DsLclEnv)) where lookupThing = dsLookupGlobal -dsLookupKnownKey :: Unique -> DsM TyThing +dsLookupKnownKey :: KnownKeyNameKey -> DsM TyThing dsLookupKnownKey uniq = do { rebindable_path <- goptM Opt_RebindableKnownKeyNames ; mb_rdr_env <- if rebindable_path @@ -575,7 +575,7 @@ dsLookupKnownKey uniq Succeeded thing -> return thing Failed msg -> failIfM (pprDiagnostic msg) } } -dsLookupKnownKeyTyCon :: Unique -> DsM TyCon +dsLookupKnownKeyTyCon :: KnownKeyNameKey -> DsM TyCon dsLookupKnownKeyTyCon uniq = tyThingTyCon <$> dsLookupKnownKey uniq ===================================== compiler/GHC/Iface/Errors/Ppr.hs ===================================== @@ -13,6 +13,7 @@ module GHC.Iface.Errors.Ppr , missingInterfaceErrorReason , missingInterfaceErrorDiagnostic , readInterfaceErrorDiagnostic + , defaultIfaceMessageOpts , lookingForHerald , cantFindErrorX ===================================== compiler/GHC/Iface/Load.hs ===================================== @@ -4,6 +4,7 @@ -} +{-# LANGUAGE CPP #-} {-# LANGUAGE NondecreasingIndentation #-} {-# LANGUAGE TypeFamilies #-} @@ -63,10 +64,7 @@ import GHC.Iface.Binary import GHC.Iface.Rename import GHC.Iface.Env import GHC.Iface.Errors as Iface_Errors - -import GHC.Rename.Env( addUsedGRE ) -import GHC.Rename.Utils( DeprecationWarnings(..) ) - +import GHC.Iface.Errors.Ppr( defaultIfaceMessageOpts ) import GHC.Tc.Errors.Types import GHC.Tc.Utils.Monad @@ -101,7 +99,7 @@ import GHC.Types.SourceFile import GHC.Types.SafeHaskell import GHC.Types.TypeEnv import GHC.Types.Unique.DSet -import GHC.Types.Unique.FM( listToUFM, lookupUFM ) +import GHC.Types.Unique.FM( UniqFM, listToUFM, lookupUFM ) import GHC.Types.SrcLoc import GHC.Types.TyThing import GHC.Types.PkgQual @@ -148,7 +146,7 @@ lookupKnownKeyName :: HasDebugCallStack => Maybe GlobalRdrEnv -> KnownKeyNameKey -> IfM lcl Name lookupKnownKeyName Nothing uniq - = do { known_key_name_map <- loadKnownKeyOccMap + = do { known_key_name_map :: UniqFM KnownKeyNameKey Name <- loadKnownKeyOccMap ; let name = lookupUFM known_key_name_map uniq `orElse` pprPanic "lookupKnownKeyThing 1" (vcat [ text "unique:" <+> ppr uniq @@ -162,21 +160,22 @@ lookupKnownKeyName (Just gbl_rdr_env) uniq -- here is the top-level GlobalRdrEnv -- Look up the known-key OccName in the GlobalRdrEnv -- If we get a unique hit, use it; if not, panic. + | let occ :: OccName + occ = lookupUFM knownKeyUniqMap uniq + `orElse` pprPanic "lookupKnownKeyThing: missing key" + (vcat [ text "unique:" <+> ppr uniq + , text "uniq-map:" <+> ppr knownKeyUniqMap ]) = case lookupGRE gbl_rdr_env (LookupOccName occ SameNameSpace) of [gre] -> do { let name = greName gre - ; addUsedGRE NoDeprecationWarnings gre - -- addUseGRE: don't complain about unused imports - -- of known-key names when -frebindable-known-key-names +-- ; addUsedGRE NoDeprecationWarnings gre +-- -- addUseGRE: don't complain about unused imports +-- -- of known-key names when -frebindable-known-key-names ; traceIf $ hang (text "lookupKnownKeyThing NoImplicitKnownKeyNames") 2 (ppr name <+> ppr uniq) ; return name } - [] -> pprPanic "lookupKnownKeyOcc: known-key name is not in scope" (ppr occ) - gres -> pprPanic "lookupKnownKeyOcc: known-key name is ambiguously in scope" (ppr gres) + [] -> pprPanic "lookupKnownKeyName: known-key name is not in scope" (ppr occ) + gres -> pprPanic "lookupKnownKeyName: known-key name is ambiguously in scope" (ppr gres) where - occ = lookupUFM knownKeyUniqMap uniq - `orElse` pprPanic "lookupKnownKeyThing 2" - (vcat [ text "unique:" <+> ppr uniq - , text "uniq-map:" <+> ppr knownKeyUniqMap ]) loadKnownKeyOccMap :: IfM lcl KnownKeyNameMap loadKnownKeyOccMap @@ -191,7 +190,10 @@ loadKnownKeyOccMap ; mb_res <- liftIO $ findImportedModule hsc_env kNOWN_KEY_NAMES NoPkgQual ; iface <- case mb_res of Found _ mod -> loadInterfaceWithException doc mod ImportBySystem - _ -> panic "loadKnownKeyOccMap" -- ToDo tidy up + fr -> do { hsc_env <- getHscEnv + ; pprPanic "loadKnownKeyOccMap" $ + missingInterfaceErrorDiagnostic defaultIfaceMessageOpts $ + cannotFindModule hsc_env kNOWN_KEY_NAMES fr } ; let occ_map :: KnownKeyNameMap occ_map = listToUFM [ (getUnique nm, nm) @@ -201,10 +203,26 @@ loadKnownKeyOccMap -- Record the KnownKeyOccMap in the EPS, so we will find it next time ; updateEps_ (\eps -> eps { eps_known_keys = Just occ_map }) +#ifdef DEBUG + ; case checkKnownKeyNamesIface occ_map of + Just msg -> pprPanic "Missing exports in KnownKeyNames" msg + Nothing -> return () +#endif ; return occ_map } } } where doc = text "Need interface for KnonwKeyNames" +checkKnownKeyNamesIface :: KnownKeyNameMap -> Maybe SDoc +-- Check that KnownKeyNames exports all the things defined in `basicKnownKeyTable` +-- and the the uniques and occ-names agree +checkKnownKeyNamesIface known_key_names_occ_map + | null bad_ones = Nothing + | otherwise = Just (ppr bad_ones) + where + bad_ones = filter is_bad basicKnownKeyTable + is_bad (occ, key) = case lookupUFM known_key_names_occ_map key of + Nothing -> True + Just name -> getOccName name /= occ {- ********************************************************************* * * ===================================== compiler/GHC/Rename/Env.hs ===================================== @@ -70,8 +70,7 @@ import GHC.Tc.Utils.Monad import GHC.Parser.PostProcess ( setRdrNameSpace ) import GHC.Builtin.Types -import GHC.Builtin.Utils( knownKeyOccMap ) -import GHC.Builtin.Names( rOOT_MAIN ) +import GHC.Builtin.Names import GHC.Types.Name import GHC.Types.Name.Set @@ -87,7 +86,6 @@ import GHC.Types.Basic ( TupleSort(..), tupleSortBoxity ) import GHC.Types.TyThing ( tyThingGREInfo ) import GHC.Types.SrcLoc as SrcLoc import GHC.Utils.Outputable as Outputable -import GHC.Types.Unique import GHC.Types.Unique.FM import GHC.Types.Unique.DSet import GHC.Types.Unique.Set ===================================== compiler/GHC/Tc/Deriv/Infer.hs ===================================== @@ -346,7 +346,7 @@ inferConstraintsStock dit@(DerivInstTys { dit_cls_tys = cls_tys -> assert (tyConTyVars rep_tc `lengthExceeds` 0) $ -- Generic1 has a single kind variable assert (cls_tys `lengthIs` 1) $ - do { functorClass <- lift $ tcLookupClass functorClassName + do { functorClass <- lift $ tcLookupKnownKeyClass functorClassKey ; pure $ con_arg_constraints $ get_gen1_constraints functorClass } ===================================== compiler/GHC/Tc/Types.hs ===================================== @@ -349,6 +349,7 @@ data IfGblEnv -- Some information about where this environment came from; -- useful for debugging. if_doc :: SDoc, + -- The type environment for the module being compiled, -- in case the interface refers back to it via a reference that -- was originally a hi-boot file. ===================================== libraries/base/src/GHC/KnownKeyNames.hs ===================================== @@ -11,7 +11,12 @@ -- module GHC.KnownKeyNames - ( Rational -- TODO: add more than rational after smoke test - ) where + ( Rational + , Eq, Ord, Show, Num, Bounded + , Foldable, Traversable + , IsString + , Functor, Monad + ) where -import GHC.Internal.Real +import Prelude +import Data.String( IsString ) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/54a71f69902797e60c69b57debe0125… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/54a71f69902797e60c69b57debe0125… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 16 commits: ghci: Mention active language edition in startup banner
by Marge Bot (＠marge-bot) 19 Mar '26

19 Mar '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 1cf24a57 by Adam Gundry at 2026-03-19T13:07:43-04:00 ghci: Mention active language edition in startup banner Per GHC proposal 632, this makes the GHCi startup banner include the active language edition, plus an indication of whether this was the default (as opposed to being explicitly selected via an option such as `-XGHC2024`). For example: ``` $ ghci GHCi, version 9.14.1: https://www.haskell.org/ghc/ :? for help Using default language edition: GHC2024 ghci> ``` Fixes #26037. - - - - - a178602e by sheaf at 2026-03-19T13:07:49-04:00 Improve incomplete record selector warnings This commit stops GHC from emitting spurious incomplete record selector warnings for bare selectors/projections such as .fld There are two places we currently emit incomplete record selector warnings: 1. In the desugarer, when we see a record selector or an occurrence of 'getField'. Here, we can use pattern matching information to ensure we don't give false positives. 2. In the typechecker, which might sometimes give false positives but can emit warnings in cases that the pattern match checker would otherwise miss. This is explained in Note [Detecting incomplete record selectors] in GHC.HsToCore.Pmc. Now, we obviously don't want to emit the same error twice, and generally we prefer (1), as those messages contain fewer false positives. So we suppress (2) when we are sure we are going to emit (1); the logic for doing so is in GHC.Tc.Instance.Class.warnIncompleteRecSel, and works by looking at the CtOrigin. Now, the issue was that this logic handled explicit record selectors as well as overloaded record field selectors such as "x.r" (which turns into a simple GetFieldOrigin CtOrigin), but it didn't properly handle record projectors like ".fld" or ".fld1.fld2" (which result in other CtOrigins such as 'RecordFieldProjectionOrigin'). To solve this problem, we re-use the 'isHasFieldOrigin' introduced in fbdc623a (slightly adjusted). On the way, we also had to update the desugarer with special handling for the 'ExpandedThingTc' case in 'ds_app', to make sure that 'ds_app_var' sees all the type arguments to 'getField' in order for it to indeed emit warnings like in (1). Fixes #26686 - - - - - 6a7f7963 by Cheng Shao at 2026-03-19T13:07:51-04:00 rts: opportunistically grow the MutableByteArray# in-place in resizeMutableByteArray# Following !15234, this patch improves `resizeMutableByteArray#` memory efficiency by growing the `MutableByteArray#` in-place if possible, addressing an old todo comment here. Also adds a new test case `resizeMutableByteArrayInPlace` that stresses this behavior. - - - - - e2765089 by Zubin Duggal at 2026-03-19T13:07:52-04:00 compiler/ffi: Collapse void pointer chains in capi wrappers New gcc/clang treat -Wincompatible-pointer-types as an error by default. Since C only allows implicit conversion from void*, not void**, capi wrappers for functions taking e.g. abstract** would fail to compile when the Haskell type Ptr (Ptr Abstract) was naively translated to void**. Collapse nested void pointers to a single void* when the pointee type has no known C representation. Fixes #26852 - - - - - aca2a15c by Teo Camarasu at 2026-03-19T13:07:53-04:00 ghc-internal: Float Generics to near top of module graph We remove GHC.Internal.Generics from the critical path of the `ghc-internal` module graph. GHC.Internal.Generics used to be in the middle of the module graph, but now it is nearer the top (built later). This change thins out the module graph and allows us to get rid of the ByteOrder hs-boot file. We implement this by moving Generics instances from the module where the datatype is defined to the GHC.Internal.Generics module. This trades off increasing the compiled size of GHC.Internal.Generics with reducing the dependency footprint of datatype modules. Not all instances are moved to GHC.Internal.Generics. For instance, `GHC.Internal.Control.Monad.Fix` keeps its instance as it is one of the very last modules compiled in `ghc-internal` and so inverting the relationship here would risk adding GHC.Internal.Generics back onto the critical path. We also don't change modules that are re-exported from the `template-haskell` or `ghc-heap`. This is done to make it easy to eventually move `Generics` to `base` once something like #26657 is implemented. Resolves #26930 Metric Decrease: T21839c - - - - - 40eb04bb by Luite Stegeman at 2026-03-19T13:07:58-04:00 Move some functions related to pointer tagging to a separate module - - - - - ec807db7 by Luite Stegeman at 2026-03-19T13:07:58-04:00 Branchless unpacking for enumeration types Change unpacking for enumeration types to go to Word8#/Word16#/Word# directly instead of going through an intermediate unboxed sum. This allows us to do a branchless conversion using DataToTag and TagToEnum. Fixes #26970 - - - - - d676ad20 by Luite Stegeman at 2026-03-19T13:08:03-04:00 bytecode: Carefully SLIDE off the end of a stack chunk The SLIDE bytecode instruction was not checking for stack chunk boundaries and could corrupt the stack underflow frame, leading to crashes. We add a check to use safe writes if we cross the chunk boundary and also handle stack underflow if Sp is advanced past the underflow frame. fix #27001 - - - - - 5f59f9dc by Cheng Shao at 2026-03-19T13:08:05-04:00 ghci: serialize BCOByteArray buffer directly when possible This patch changes the `Binary` instances of `BCOByteArray` to directly serialize the underlying buffer when possible, while also taking into account the issue of host-dependent `Word` width. See added comments and amended `Note [BCOByteArray serialization]` for detailed explanation. Closes #27020. - - - - - a57143c1 by Sylvain Henry at 2026-03-19T13:08:30-04:00 Core: add constant-folding rules for Addr# eq/ne (#18032) - - - - - 69ab87b6 by Matthew Pickering at 2026-03-19T13:08:32-04:00 Use OsPath rather than FilePath in Downsweep cache This gets us one step closure to uniformly using `OsPath` in the compiler. - - - - - a76a60c7 by Cheng Shao at 2026-03-19T13:08:33-04:00 hadrian: fix ghc-in-ghci flavour stage0 shared libraries This patch fixes missing stage0 shared libraries in hadrian ghc-in-ghci flavour, which was accidentally dropped in 669d09f950a6e88b903d9fd8a7571531774d4d5d and resulted in a regression in HLS support on linux/macos. Fixes #27057. - - - - - 3ad39f2d by Cheng Shao at 2026-03-19T13:08:34-04:00 ghc-internal: fix unused imports again Fixes #27059. - - - - - bb979eb0 by Sylvain Henry at 2026-03-19T13:08:40-04:00 JS: install rts/Types.h header file (#27033) It was an omission, making HsFFI.h not usable with GHC using the JS backend. - - - - - ad13bb78 by Cheng Shao at 2026-03-19T13:08:41-04:00 hadrian: don't compile RTS with -Winline This patch removes `-Winline` from cflags when compiling the RTS, given that: 1. It generates a huge pile of spam and hurts developer experience 2. Whether inlining happens is highly dependent on toolchains, flavours, etc, and it's not really an issue to fix if inlining doesn't happen; it's a hint to the C compiler anyway. Fixes #27060. - - - - - 3f18ff78 by Cheng Shao at 2026-03-19T13:08:42-04:00 hadrian: compile libffi-clib with -Wno-deprecated-declarations This patch adds `-Wno-deprecated-declarations` to cflags of `libffi-clib`, given that it produces noise at compile-time that aren't really our issue to fix anyway, it's from vendored libffi source code. - - - - - 77 changed files: - compiler/GHC/Cmm/Utils.hs - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Driver/Downsweep.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Foreign/C.hs - compiler/GHC/HsToCore/Pmc.hs - + compiler/GHC/Platform/Tag.hs - compiler/GHC/StgToCmm/Closure.hs - compiler/GHC/StgToCmm/Expr.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/TyCl/Build.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Types/Id/Make.hs - compiler/GHC/Types/RepType.hs - compiler/ghc.cabal.in - ghc/GHCi/UI.hs - ghc/Main.hs - hadrian/src/Settings/Flavours/GhcInGhci.hs - hadrian/src/Settings/Packages.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - − libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Event/Control.hs - libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs - libraries/ghc-internal/src/GHC/Internal/Generics.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc - libraries/ghc-internal/src/GHC/Internal/Read.hs - libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs - libraries/ghc-internal/src/GHC/Internal/TopHandler.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Bits.hs - libraries/ghci/GHCi/ResolvedBCO.hs - rts/Interpreter.c - rts/PrimOps.cmm - rts/rts.cabal - + testsuite/tests/bytecode/T27001.hs - + testsuite/tests/bytecode/T27001.stdout - testsuite/tests/bytecode/all.T - testsuite/tests/count-deps/CountDepsAst.stdout - testsuite/tests/count-deps/CountDepsParser.stdout - + testsuite/tests/ffi/should_compile/T26852.h - + testsuite/tests/ffi/should_compile/T26852.hs - + testsuite/tests/ffi/should_compile/T26852.stderr - testsuite/tests/ffi/should_compile/all.T - testsuite/tests/ghci/scripts/ListTuplePunsPpr.stdout - testsuite/tests/ghci/scripts/T10963.stderr - testsuite/tests/ghci/scripts/ghci064.stdout - testsuite/tests/ghci/should_run/BinaryArray.hs - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 - + testsuite/tests/javascript/js-c-sources/T27033.hs - + testsuite/tests/javascript/js-c-sources/T27033.stdout - + testsuite/tests/javascript/js-c-sources/T27033_c.c - + testsuite/tests/javascript/js-c-sources/T27033_js.js - testsuite/tests/javascript/js-c-sources/all.T - + testsuite/tests/overloadedrecflds/should_compile/T26686.hs - + testsuite/tests/overloadedrecflds/should_compile/T26686.stderr - testsuite/tests/overloadedrecflds/should_compile/all.T - testsuite/tests/rts/all.T - + testsuite/tests/rts/resizeMutableByteArrayInPlace.hs - + testsuite/tests/simplCore/should_compile/T18032.hs - + testsuite/tests/simplCore/should_compile/T18032.stderr - testsuite/tests/simplCore/should_compile/all.T - testsuite/tests/simplStg/should_run/all.T - + testsuite/tests/simplStg/should_run/unpack_enum.hs - + testsuite/tests/simplStg/should_run/unpack_enum.stdout The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f55d53f3303af210991782b79deb56… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f55d53f3303af210991782b79deb56… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T22637] Fix build
by Simon Jakobi (＠sjakobi2) 19 Mar '26

19 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T22637 at Glasgow Haskell Compiler / GHC Commits: dfc907fa by Simon Jakobi at 2026-03-19T17:48:33+01:00 Fix build - - - - - 2 changed files: - compiler/GHC/Driver/Errors.hs - compiler/GHC/Types/Error.hs Changes: ===================================== compiler/GHC/Driver/Errors.hs ===================================== @@ -16,6 +16,7 @@ import GHC.Utils.Error import GHC.Utils.Outputable import GHC.Utils.Logger import Data.List.NonEmpty (NonEmpty(..)) +import Data.Maybe (fromMaybe) reportError :: Logger -> NamePprCtx -> DiagOpts -> SrcSpan -> SDoc -> IO () reportError logger nameContext opts span doc = do ===================================== compiler/GHC/Types/Error.hs ===================================== @@ -109,7 +109,7 @@ import Data.Bifunctor import Data.Foldable import Data.List.NonEmpty ( NonEmpty (..) ) import qualified Data.List.NonEmpty as NE -import Data.List ( intercalate, sortBy ) +import Data.List ( intercalate, sort ) import Data.Maybe ( mapMaybe, maybeToList ) import Data.Typeable ( Typeable ) import Numeric.Natural ( Natural ) @@ -804,7 +804,7 @@ getCaretDiagnostics msg_class spans = vcat <$> traverse (getSingleCaretDiagnostic msg_class) (dedupSortedRealSpans spans) where dedupSortedRealSpans :: NonEmpty SrcSpan -> [RealSrcSpan] - dedupSortedRealSpans = go Nothing . sortBy leftmost_smallest . mapMaybe srcSpanToRealSrcSpan . NE.toList + dedupSortedRealSpans = go Nothing . sort . mapMaybe srcSpanToRealSrcSpan . NE.toList where go _ [] = [] go prev (span:rest) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/dfc907fa2aea935b99a1519973ca1a2… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/dfc907fa2aea935b99a1519973ca1a2… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/ani/tc-expand] 9 commits: Introduce `-fimport-loaded-targets` GHCi flag
by Apoorv Ingle (＠ani) 19 Mar '26

19 Mar '26

Apoorv Ingle pushed to branch wip/ani/tc-expand at Glasgow Haskell Compiler / GHC Commits: 86bd9bfc by fendor at 2026-03-17T23:46:09-04:00 Introduce `-fimport-loaded-targets` GHCi flag This new flag automatically adds all loaded targets to the GHCi session by adding an `InteractiveImport` for the loaded targets. By default, this flag is disabled, as it potentially increases memory-usage. This interacts with the flag `-fno-load-initial-targets` as follows: * If no module is loaded, no module is added as an interactive import. * If a reload loads up to a module, all loaded modules are added as interactive imports. * Unloading modules removes them from the interactive context. Fixes #26866 by rendering the use of a `-ghci-script` to achieve the same thing redundant. - - - - - e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Remove GHC.Internal.Data.Eq It served no purpose other than being a re-export. - - - - - 6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Refine GHC.Internal.Base imports Removed re-exports from GHC.Internal.Base. This reveals some modules that don't actually use anything *defined* in GHC.Internal.Base, and that can be pushed down a little in the import graph. Replaced most imports of GHC.Internal.Base with non-wildcard imports from modules where the identifiers are actually defined. Part of #26834 Metric Decrease: T5321FD - - - - - 7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00 ci: clone, don't copy when creating the cabal cache Also removed WINDOWS_HOST variable detected via uname - we now just check whether the CI job has windows in its name. This works because we only ever care about it if the respective job is not a cross job. We also statically detect darwin cross jobs in the same way. We only ever have darwin -> darwin cross jobs so this is enough to detect the host reliably. - - - - - f8817879 by mangoiv at 2026-03-17T23:48:44-04:00 ci: mark size_hello_artifact fragile on darwin x86 The size of the x86_64 hello artifact is not stable which results in flaky testruns. Resolves #26814 - - - - - 547c9a33 by Apoorv Ingle at 2026-03-19T11:05:40-05:00 Work for #25001 Notes added [Error Context Stack] [Typechecking by expansion: overview] Notes updated Note [Expanding HsDo with XXExprGhcRn] ------------------------- Metric Decrease: T9020 ------------------------- * Streamlines implementations of `tcExpr` and `tcXExpr` to work on `XExpr` * Kills `VACtxt` (and its associated `VAExpansion` and `VACall`) datatype, it is subsumed by simply a `SrcSpan`. * Kills the function `addHeadCtxt` as it is now mearly setting a location * The function `tcValArgs` does its own argument number management * Makes `splitHsApps` not look through `XExpr` * `tcExprSigma` is called if the head of the expression after calling `splitHsApps` turns out to be an `XExpr` * Removes location information from `OrigPat` payload * Removes special case of tcBody from `tcLambdaMatches` * Removes special case of `dsExpr` for `ExpandedThingTc` * Rename `HsThingRn` to `SrcCodeCtxt` * Kills `tcl_in_gen_code` and `tcl_err_ctxt`. It is subsumed by `ErrCtxtStack` * Kills `ExpectedFunTyOrig`. It is subsumed by `CtOrigin` * Fixes `CtOrigin` for `HsProjection` case in `exprCtOrigin`. It was previously assigned to be `SectionOrigin`. It is now just the expression * Adds a new `CtOrigin.ExpansionOrigin` for storing the original syntax * Adds a new `CtOrigin.ExpectedTySyntax` as a replacement for `ExpectedTySyntaxOp`. Cannot kill the former yet because of `ApplicativeDo` * Renames `tcMonoExpr` -> `tcMonoLExpr`, `tcMonoExprNC` -> `tcMonoLExpr` * Renames `EValArg`, `EValArgQL` fields: `ea_ctxt` -> `ea_loc_span` and `eaql_ctx` -> `eaql_loc_span` * kill `PopErrCtxt` from `XXExprGhcRn` * simplify `addArgCtxt` and push `setSrcSpan` inside `addLExprCtxt`. Make sure addExprCtxt is not called by itself * fun_orig in tcApp depends on the SrcSpan of the head of the application chain (similar to addArgCtxt) * rename fun_ctxt to fun_lspan, fun_orig passed in tcInstFun to default to app chain head if its user located, fall back to srcCodeOrigin if it's a generated location * fix quickLookArg function to blame the correct application chain head. The arguments application chain head should be blamed, not the original head when we quick look arg * Make sure only expression wrapped around generated src span are ignored while adding them to the error context stack * `getDeepSubsumptionFlag_DataConHead` performs a non-trivial traversal if the expression passed to it is complex. This traversal is necessary if the head of the function is an `XExpr` and `splitHsApps` does not look through them - The deepsubsumption flag is stored in EVAlArgQL to reduce the need to call `getDeepSubsumptionFlag_DataConHead` - `getDeepSubsumptionFlag_DataConHead` is called in `tcExprSigma` and `tcInferAppHead` to reduce AST traversals * Make a new variant `GeneratedSrcSpan` in `SrcSpan` for HIEAst Nodes * wrap `fromListN` with a generated src span with GeneratedSrcSpanDetails field to store the original srcspan * remove `UnhelpfulGenerated` from `UnhelpfulSpanReason` and into new datatype `GeneratedSrcSpanDetails` * trying to remove SrcCodeOrigin by merging it with ErrCtxtMsg * ErrCtxtMsg is now HsCtxt * Landmarks are now just computed on the fly * killed off CodeSrcFlag - - - - - 742e09d7 by Apoorv Ingle at 2026-03-19T11:05:40-05:00 make HsExpandedRn and HsExpandedTc payload LExpr, add tcExpand for expanding Do expressions before typechecking in tcExpr - - - - - 811b6754 by Apoorv Ingle at 2026-03-19T11:05:40-05:00 making HsExpansion a new datatype - - - - - 837b5540 by Apoorv Ingle at 2026-03-19T11:05:40-05:00 remove setInGeneratedCode - - - - - 400 changed files: - .gitlab/ci.sh - compiler/GHC.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/DocString.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Expr.hs-boot - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Syn/Type.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/HsToCore/Pmc.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Ext/Utils.hs - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Debugger/Breakpoints.hs - compiler/GHC/Tc/Deriv.hs - compiler/GHC/Tc/Deriv/Infer.hs - compiler/GHC/Tc/Deriv/Utils.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/App.hs - + compiler/GHC/Tc/Gen/App.hs-boot - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Do.hs - compiler/GHC/Tc/Gen/Export.hs - compiler/GHC/Tc/Gen/Expr.hs - compiler/GHC/Tc/Gen/Expr.hs-boot - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/HsType.hs - compiler/GHC/Tc/Gen/Match.hs - compiler/GHC/Tc/Gen/Match.hs-boot - compiler/GHC/Tc/Gen/Pat.hs - compiler/GHC/Tc/Gen/Sig.hs - compiler/GHC/Tc/Gen/Splice.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Module.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/TyCl.hs - compiler/GHC/Tc/TyCl/Class.hs - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/TyCl/PatSyn.hs - compiler/GHC/Tc/Types.hs - compiler/GHC/Tc/Types/BasicTypes.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/CtLoc.hs - compiler/GHC/Tc/Types/ErrCtxt.hs - compiler/GHC/Tc/Types/LclEnv.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Types/Origin.hs-boot - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcType.hs-boot - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Validity.hs - compiler/GHC/Tc/Zonk/TcType.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/Types/Error.hs - + compiler/GHC/Types/Error.hs-boot - compiler/GHC/Types/Hint/Ppr.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/SrcLoc.hs - + compiler/GHC/Unit/State.hs-boot - compiler/GHC/Utils/Binary.hs - compiler/GHC/Utils/Logger.hs - docs/users_guide/ghci.rst - ghc/GHCi/UI.hs - ghc/GHCi/UI/Info.hs - libraries/base/src/Control/Applicative.hs - libraries/base/src/Data/Char.hs - libraries/base/src/Data/Eq.hs - libraries/base/src/Data/Semigroup.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Weak/Finalize.hs - libraries/base/src/Prelude.hs - libraries/ghc-experimental/src/GHC/Profiling/Eras.hs - libraries/ghc-internal/codepages/MakeTable.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs - libraries/ghc-internal/src/GHC/Internal/Arr.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Bits.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - libraries/ghc-internal/src/GHC/Internal/Char.hs - libraries/ghc-internal/src/GHC/Internal/Clock.hsc - libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs - libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc - libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs - libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs - libraries/ghc-internal/src/GHC/Internal/Data/Data.hs - libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs - libraries/ghc-internal/src/GHC/Internal/Data/Either.hs - − libraries/ghc-internal/src/GHC/Internal/Data/Eq.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Function.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Utils.hs - libraries/ghc-internal/src/GHC/Internal/Data/IORef.hs - libraries/ghc-internal/src/GHC/Internal/Data/List.hs - libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs - libraries/ghc-internal/src/GHC/Internal/Data/Ord.hs - libraries/ghc-internal/src/GHC/Internal/Data/Proxy.hs - libraries/ghc-internal/src/GHC/Internal/Data/STRef.hs - libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/String.hs - libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Bool.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Coercion.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Equality.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Ord.hs - libraries/ghc-internal/src/GHC/Internal/Data/Typeable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/Unique.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs - 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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/48d25b0cfaf7496cc5a45b7b091adb… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/48d25b0cfaf7496cc5a45b7b091adb… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/romes/26039] Bump default language edition to GHC2024
by Rodrigo Mesquita (＠alt-romes) 19 Mar '26

19 Mar '26

Rodrigo Mesquita pushed to branch wip/romes/26039 at Glasgow Haskell Compiler / GHC Commits: fc52f9f2 by Rodrigo Mesquita at 2026-03-19T15:57:20+00:00 Bump default language edition to GHC2024 As per the accepted ghc-proposal#632 Fixes #26039 - - - - - 121 changed files: - compiler/GHC/Driver/Flags.hs - docs/users_guide/exts/control.rst - testsuite/tests/ado/ado004.hs - testsuite/tests/annotations/should_fail/annfail02.hs - testsuite/tests/annotations/should_fail/annfail02.stderr - testsuite/tests/array/should_run/arr020.hs - testsuite/tests/core-to-stg/T19700.hs - testsuite/tests/deSugar/should_fail/DsStrictFail.hs - testsuite/tests/deriving/should_compile/T15798b.hs - testsuite/tests/deriving/should_compile/T15798c.hs - testsuite/tests/deriving/should_compile/T15798c.stderr - testsuite/tests/deriving/should_compile/T24955a.hs - testsuite/tests/deriving/should_compile/T24955a.stderr - testsuite/tests/deriving/should_compile/T24955b.hs - testsuite/tests/deriving/should_compile/T24955c.hs - 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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/fc52f9f223d1fc72ebeee3f15ea71b9… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/fc52f9f223d1fc72ebeee3f15ea71b9… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/sjakobi/T22637
by Simon Jakobi (＠sjakobi2) 19 Mar '26

19 Mar '26

Simon Jakobi pushed new branch wip/sjakobi/T22637 at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/sjakobi/T22637 You're receiving this email because of your account on gitlab.haskell.org.

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