[Git][ghc/ghc][wip/sol/remove-ddump-json] 20 commits: README: Add note on ghc.nix

Simon Hengel pushed to branch wip/sol/remove-ddump-json at Glasgow Haskell Compiler / GHC Commits: 69cc16ca by Marc Scholten at 2025-08-06T15:51:28-04:00 README: Add note on ghc.nix - - - - - 93a2f450 by Daniel Díaz at 2025-08-06T15:52:14-04:00 Link to the "Strict Bindings" docs from the linear types docs Strict Bidings are relevant for the kinds of multiplicity annotations linear lets support. - - - - - 246b7853 by Matthew Pickering at 2025-08-07T06:58:30-04:00 level imports: Check the level of exported identifiers The level imports specification states that exported identifiers have to be at level 0. This patch adds the requird level checks that all explicitly mentioned identifiers occur at level 0. For implicit export specifications (T(..) and module B), only level 0 identifiers are selected for re-export. ghc-proposal: https://github.com/ghc-proposals/ghc-proposals/pull/705 Fixes #26090 - - - - - 358bc4fc by fendor at 2025-08-07T06:59:12-04:00 Bump GHC on darwin CI to 9.10.1 - - - - - 1903ae35 by Matthew Pickering at 2025-08-07T12:21:10+01:00 ipe: Place strings and metadata into specific .ipe section By placing the .ipe metadata into a specific section it can be stripped from the final binary if desired. ``` objcopy --remove-section .ipe <binary> upx <binary> ``` Towards #21766 - - - - - c80dd91c by Matthew Pickering at 2025-08-07T12:22:42+01:00 ipe: Place magic word at the start of entries in the .ipe section The magic word "IPE\nIPE\n" is placed at the start of .ipe sections, then if the section is stripped, we can check whether the section starts with the magic word or not to determine whether there is metadata present or not. Towards #21766 - - - - - cab42666 by Matthew Pickering at 2025-08-07T12:22:42+01:00 ipe: Use stable IDs for IPE entries IPEs have historically been indexed and reported by their address. This makes it impossible to compare profiles between runs, since the addresses may change (due to ASLR) and also makes it tricky to separate out the IPE map from the binary. This small patch adds a stable identifier for each IPE entry. The stable identifier is a single 64 bit word. The high-bits are a per-module identifier and the low bits identify which entry in each module. 1. When a node is added into the IPE buffer it is assigned a unique identifier from an incrementing global counter. 2. Each entry already has an index by it's position in the `IpeBufferListNode`. The two are combined together by the `IPE_ENTRY_KEY` macro. Info table profiling uses the stable identifier rather than the address of the info table. The benefits of this change are: * Profiles from different runs can be easily compared * The metadata can be extracted from the binary (via the eventlog for example) and then stripped from the executable. Fixes #21766 - - - - - 2860a9a5 by Simon Peyton Jones at 2025-08-07T20:29:18-04:00 In TcSShortCut, typechecker plugins should get empty Givens Solving in TcShortCut mode means /ignoring the Givens/. So we should not pass them to typechecker plugins! Fixes #26258. This is a fixup to the earlier MR: commit 1bd12371feacc52394a0e660ef9349f9e8ee1c06 Author: Simon Peyton Jones Date: Mon Jul 21 10:04:49 2025 +0100 Improve treatment of SPECIALISE pragmas -- again! - - - - - 2157db2d by sterni at 2025-08-08T15:32:39-04:00 hadrian: enable terminfo if --with-curses-* flags are given The GHC make build system used to support WITH_TERMINFO in ghc.mk which allowed controlling whether to build GHC with terminfo or not. hadrian has replaced this with a system where this is effectively controlled by the cross-compiling setting (the default WITH_TERMINFO value was bassed on CrossCompiling, iirc). This behavior is undesireable in some cases and there is not really a good way to work around it. Especially for downstream packagers, modifying this via UserSettings is not really feasible since such a source file has to be kept in sync with Settings/Default.hs manually since it can't import Settings.Default or any predefined Flavour definitions. To avoid having to add a new setting to cfg/system.config and/or a new configure flag (though I'm happy to implement both if required), I've chosen to take --with-curses-* being set explicitly as an indication that the user wants to have terminfo enabled. This would work for Nixpkgs which sets these flags [1] as well as haskell.nix [2] (which goes to some extreme measures [3] [4] to force terminfo in all scenarios). In general, I'm an advocate for making the GHC build be the same for native and cross insofar it is possible since it makes packaging GHC and Haskell related things while still supporting cross much less compilicated. A more minimal GHC with reduced dependencies should probably be a specific flavor, not the default. Partially addresses #26288 by forcing terminfo to be built if the user explicitly passes configure flags related to it. However, it isn't built by default when cross-compiling yet nor is there an explicit way to control the package being built. [1]: https://github.com/NixOS/nixpkgs/blob/3a7266fcefcb9ce353df49ba3f292d06443760... [2]: https://github.com/input-output-hk/haskell.nix/blob/6eaafcdf04bab7be745d1aa4... [3]: https://github.com/input-output-hk/haskell.nix/blob/6eaafcdf04bab7be745d1aa4... [4]: https://github.com/input-output-hk/haskell.nix/blob/6eaafcdf04bab7be745d1aa4... - - - - - b3c31488 by David Feuer at 2025-08-08T15:33:21-04:00 Add default QuasiQuoters Add `defaultQuasiQuoter` and `namedDefaultQuasiQuoter` to make it easier to write `QuasiQuoters` that give helpful error messages when they're used in inappropriate contexts. Closes #24434. - - - - - 397763da by Simon Hengel at 2025-08-10T06:12:02+07:00 Refactoring: Don't misuse `MCDiagnostic` for lint messages `MCDiagnostic` is meant to be used for compiler diagnostics. Any code that creates `MCDiagnostic` directly, without going through `GHC.Driver.Errors.printMessage`, side steps `-fdiagnostics-as-json` (see e.g. !14475, !14492 !14548). To avoid this in the future I want to control more narrowly who creates `MCDiagnostic` (see #24113). Some parts of the compiler use `MCDiagnostic` purely for formatting purposes, without creating any real compiler diagnostics. This change introduces a helper function, `formatDiagnostic`, that can be used in such cases instead of constructing `MCDiagnostic`. - - - - - c6392ebb by Simon Hengel at 2025-08-10T06:12:02+07:00 Rename MCDiagnostic to UnsafeMCDiagnostic - - - - - 1fee223a by Simon Hengel at 2025-08-10T06:12:02+07:00 Remove -ddump-json (fixes #24113) - - - - - 8873732c by Simon Hengel at 2025-08-10T06:12:02+07:00 Add SrcSpan to MCDiagnostic - - - - - f60aac7a by Simon Hengel at 2025-08-10T06:12:02+07:00 Refactoring: More consistently use logOutput, logInfo, fatalErrorMsg - - - - - c6b49448 by Simon Hengel at 2025-08-10T06:12:02+07:00 Get rid of mkLocMessage - - - - - 34d6baea by Simon Hengel at 2025-08-10T06:12:02+07:00 Add Message data type - - - - - 1f5a353e by Simon Hengel at 2025-08-10T06:12:02+07:00 Get rid of MessageClass - - - - - 4c776200 by Simon Hengel at 2025-08-10T06:12:02+07:00 Rename DiagnosticMessage to GenericDiagnosticMessage - - - - - b6f47d1e by Simon Hengel at 2025-08-10T09:34:48+07:00 Remove JSON logging - - - - - 78 changed files: - .gitlab/darwin/toolchain.nix - README.md - compiler/GHC/Cmm.hs - compiler/GHC/CmmToAsm/PPC/Ppr.hs - compiler/GHC/CmmToAsm/Ppr.hs - compiler/GHC/CmmToLlvm/Data.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Opt/Monad.hs - compiler/GHC/Driver/CodeOutput.hs - compiler/GHC/Driver/Errors.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Main.hs - compiler/GHC/Driver/Make.hs - compiler/GHC/Driver/Monad.hs - compiler/GHC/Driver/Pipeline.hs - compiler/GHC/Driver/Pipeline/Execute.hs - compiler/GHC/Driver/Pipeline/LogQueue.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Linker/Deps.hs - compiler/GHC/Linker/Loader.hs - compiler/GHC/Runtime/Debugger.hs - compiler/GHC/Stg/Lint.hs - compiler/GHC/StgToCmm/InfoTableProv.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Gen/Export.hs - compiler/GHC/Tc/Solver/Dict.hs - compiler/GHC/Tc/Solver/Monad.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Types/Error.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/SourceError.hs - compiler/GHC/Utils/Error.hs - compiler/GHC/Utils/Logger.hs - docs/users_guide/debug-info.rst - docs/users_guide/debugging.rst - docs/users_guide/exts/linear_types.rst - docs/users_guide/exts/strict.rst - ghc/GHCi/UI.hs - ghc/GHCi/UI/Exception.hs - hadrian/src/Settings/Default.hs - hadrian/src/Settings/Packages.hs - libraries/ghc-internal/src/GHC/Internal/TH/Quote.hs - libraries/template-haskell/Language/Haskell/TH/Quote.hs - libraries/template-haskell/changelog.md - rts/IPE.c - rts/ProfHeap.c - rts/eventlog/EventLog.c - rts/include/rts/IPE.h - testsuite/tests/driver/T16167.stderr - − testsuite/tests/driver/T16167.stdout - testsuite/tests/driver/all.T - testsuite/tests/driver/json2.stderr - − testsuite/tests/driver/json_dump.hs - − testsuite/tests/driver/json_dump.stderr - testsuite/tests/interface-stability/template-haskell-exports.stdout - testsuite/tests/rts/ipe/ipeMap.c - testsuite/tests/rts/ipe/ipe_lib.c - + testsuite/tests/splice-imports/DodgyLevelExport.hs - + testsuite/tests/splice-imports/DodgyLevelExport.stderr - + testsuite/tests/splice-imports/DodgyLevelExportA.hs - + testsuite/tests/splice-imports/LevelImportExports.hs - + testsuite/tests/splice-imports/LevelImportExports.stdout - + testsuite/tests/splice-imports/LevelImportExportsA.hs - testsuite/tests/splice-imports/Makefile - + testsuite/tests/splice-imports/ModuleExport.hs - + testsuite/tests/splice-imports/ModuleExport.stderr - + testsuite/tests/splice-imports/ModuleExportA.hs - + testsuite/tests/splice-imports/ModuleExportB.hs - + testsuite/tests/splice-imports/T26090.hs - + testsuite/tests/splice-imports/T26090.stderr - + testsuite/tests/splice-imports/T26090A.hs - testsuite/tests/splice-imports/all.T - utils/check-exact/Main.hs - utils/check-exact/Preprocess.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs The diff was not included because it is too large. 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