December 2015 - ghc-tickets

Re: [GHC] #1978: Error message: Undefined reference to `XXX_closure'
by GHC 15 Dec '15

15 Dec '15

#1978: Error message: Undefined reference to `XXX_closure' -------------------------------------+------------------------------------- Reporter: Andriy | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.4.1 Resolution: worksforme | Keywords: Operating System: Linux | Architecture: arm Type of failure: GHC rejects | Test Case: valid program | Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => closed * resolution: => worksforme Comment: I have been able to build Pandoc with 7.10. Closing. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1978#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7988: Big integers crashing integer-simple on qnxnto-arm with unregisterised build (was: Big integers crashing integer-simple on qnxnto-arm)
by GHC 15 Dec '15

15 Dec '15

#7988: Big integers crashing integer-simple on qnxnto-arm with unregisterised build ----------------------------------+--------------------------- Reporter: singpolyma | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: QNX | Architecture: arm Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ----------------------------------+--------------------------- -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7988#comment:11> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10368: Armhf/Linux : test T7815 failing
by GHC 15 Dec '15

15 Dec '15

#10368: Armhf/Linux : test T7815 failing -------------------------------------+------------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.11 Keywords: | Operating System: Unknown/Multiple Architecture: arm | Type of failure: Incorrect result Test Case: | at runtime Blocking: | Blocked By: Differential Revisions: | Related Tickets: -------------------------------------+------------------------------------- During validation on armhf/linux, I found this test had failed. Unfortunately, it only fails intermittently on one quad core Arm board and not at all on another quad core Arm board. If I do 10 runs of the test like: {{{ for x in $(seq 1 10) ; do testsuite/tests/rts/T7815 50000 +RTS -N2 ; echo $? ; done }}} one will fail at least 4 or 5 times and ocassionally as many as 9 or 10 times. The two boards are: * Inforce Computing ifc6540 with a Qualcomm Snapdragon 805 CPU. * Radxa Rock with a Rockchip RK3199 CPU. The ifc6540 is the one that fails. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10368> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10029: unit-tests: internal error: evacuate(static): strange closure type 62744
by GHC 15 Dec '15

15 Dec '15

#10029: unit-tests: internal error: evacuate(static): strange closure type 62744 -------------------------------------+------------------------------------- Reporter: | Owner: juhpetersen | Status: new Type: bug | Milestone: Priority: normal | Version: 7.8.4 Component: Compiler | Operating System: Linux Keywords: | Type of failure: Compile-time Architecture: arm | crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- The syb-0.4.1 testsuite fails on ARMv7 Linux (Fedora 22 devel) with ghc-7.8.4: {{{ + ./Setup test Running 1 test suites... Test suite unit-tests: RUNNING... Cases: 29 Tried: 0 Errors: 0 Failures: 0 Cases: 29 Tried: 1 Errors: 0 Failures: 0 Cases: 29 Tried: 2 Errors: 0 Failures: 0 Cases: 29 Tried: 3 Errors: 0 Failures: 0 Cases: 29 Tried: 4 Errors: 0 Failures: 0 Cases: 29 Tried: 5 Errors: 0 Failures: 0 Cases: 29 Tried: 6 Errors: 0 Failures: 0 Cases: 29 Tried: 7 Errors: 0 Failures: 0 Cases: 29 Tried: 8 Errors: 0 Failures: 0 Cases: 29 Tried: 9 Errors: 0 Failures: 0 Cases: 29 Tried: 10 Errors: 0 Failures: 0 Cases: 29 Tried: 11 Errors: 0 Failures: 0 Cases: 29 Tried: 12 Errors: 0 Failures: 0 Cases: 29 Tried: 13 Errors: 0 Failures: 0 Cases: 29 Tried: 14 Errors: 0 Failures: 0 Cases: 29 Tried: 15 Errors: 0 Failures: 0 Cases: 29 Tried: 16 Errors: 0 Failures: 0 Cases: 29 Tried: 17 Errors: 0 Failures: 0 Cases: 29 Tried: 18 Errors: 0 Failures: 0unit-tests: internal error: evacuate(static): strange closure type 62744 (GHC version 7.8.4 for arm_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Test suite unit-tests: FAIL Test suite logged to: dist/test/syb-0.4.1-unit-tests.log 0 of 1 test suites (0 of 1 test cases) passed. }}} Let me know if I can provide any more details. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10029> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7723: iOS patch no 12: Itimer.c doesn't work on iOS
by GHC 15 Dec '15

15 Dec '15

#7723: iOS patch no 12: Itimer.c doesn't work on iOS --------------------------------------+---------------------------------- Reporter: StephenBlackheath | Owner: Type: bug | Status: infoneeded Priority: low | Milestone: 8.2.1 Component: Runtime System | Version: 7.7 Resolution: | Keywords: Operating System: Other | Architecture: arm Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | --------------------------------------+---------------------------------- Changes (by bgamari): * priority: normal => low * milestone: 8.0.1 => 8.2.1 Old description: > As it stands, rts/posix/Itimer.c dies at runtime on iOS. > > I am in the process of tidying up a solution for this. New description: As it stands, `rts/posix/Itimer.c` dies at runtime on iOS. I am in the process of tidying up a solution for this. -- Comment: Bumping to 8.2. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7723#comment:20> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9952: Add -g<level>
by GHC 15 Dec '15

15 Dec '15

#9952: Add -g<level> -------------------------------------+------------------------------------- Reporter: tibbe | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- We should add debug info levels, just like GCC and LLVM has. In particular, I'd like to have -g1 which has (from https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html) > minimal information, enough for making backtraces in parts of the program that you don't plan to debug. This includes descriptions of functions and external variables, and line number tables, but no information about local variables. This should let us have -g1 turned on even in production code, as it should grow binary sizes by much. This in turn should be a boon for debugability of programs. It should also allow us to offer some for of stack traces without any runtime cost (except when an exception with a stack trace is actually raised.) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9952> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9499: Add -prelude-is flag
by GHC 15 Dec '15

15 Dec '15

#9499: Add -prelude-is flag -------------------------------------+------------------------------------- Reporter: agibiansky | Owner: agibiansky Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Keywords: flag | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Easy (less than 1 | Type of failure: hour) | None/Unknown Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- I would like GHC to have a `-prelude-is` flag, which would specify an alternate Prelude to use instead of the default Haskell prelude. The benefit this would have is that this would give alternate preludes a more first-class status. Instead of having to import an alternative prelude everywhere, you could just have a ghc-options: -prelude-is=... flag in your *.cabal file, and have a different prelude be used. This is important for my own work, as I highly prefer other preludes for my non- library development; I think this is a feature which will be very useful as Haskell develops and we try to figure out how to get rid of the warts in the current Prelude. Additional discussion here: https://groups.google.com/forum/#!topic /haskell-cafe/NCVzXZcxNmQ -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9499> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9573: Add warning for invalid digits in integer literals
by GHC 15 Dec '15

15 Dec '15

#9573: Add warning for invalid digits in integer literals -------------------------------------+------------------------------------- Reporter: vlopez | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler (Parser) | Version: 7.9 Keywords: parsing, integer, | Operating System: octal, binary, hexadecimal, | Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: Difficulty: Difficult (2-5 | None/Unknown days) | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- In its latest version, GHC can parse binary (with `-XBinaryLiterals`), octal and hexadecimal literals: {{{#!hs > 0b101010 > 0o52 > 0x2A }}} Currently, the parser/lexer reads digits from the input as long as they are valid for the specified radix. All subsequent digits are interpreted as a new, separate token. If the user uses a digit which isn't valid for the radix, it may be reported with a non-obvious error message, or interpreted in surprising ways: {{{#!hs > :t 0o567 0o576 :: Num a => a > :t 0o5678 0o5678 :: (Num (a -> t), Num a) => t Prelude> :t 0x1bfah <interactive>:1:7: Not in scope: ‘h’ > replicate 0o5678 [8,8,8,8,8,8,8... }}} We suggest warning the user when a literal of this sort is written, while respecting any other error messages and the original behaviour. More specifically, the parser or lexer would give a warning if a token starting with an alphanumeric character is found immediately after a numeric literal, without a blank between them. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9573> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9613: when giving an error "No instance for C (a -> b)", suggest that a function may be underapplied
by GHC 15 Dec '15

15 Dec '15

#9613: when giving an error "No instance for C (a -> b)", suggest that a function may be underapplied -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 7.8.3 checker) | Operating System: Keywords: | Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: Difficulty: Unknown | None/Unknown Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Suggestion of ibotty here: http://www.reddit.com/r/haskell/comments/2go92u/beginner_error_messages_in_… {{{ Prelude> print length <interactive>:2:1: No instance for (Show ([a0] -> Int)) arising from a use of ‘print’ but there is an instance for (Show Int); maybe you omitted an argument to ‘length’ of type [a0]? In the expression: print length In an equation for ‘it’: it = print length }}} I guess the trickiest part will be figuring out what function is underapplied. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9613> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9677: "operation not permitted" when running tests on Windows
by GHC 15 Dec '15

15 Dec '15

#9677: "operation not permitted" when running tests on Windows -------------------------------------+------------------------------------- Reporter: gintas | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Keywords: | Operating System: Windows Architecture: Unknown/Multiple | Type of failure: Difficulty: Unknown | None/Unknown Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- When I run ghc tests on windows using "make test", I see instances of the following: =====> T5442d(normal) 86 of 4093 [0, 1, 0] cd ./cabal && $MAKE -s --no-print-directory T5442d </dev/null >T5442d.run.stdout 2>T5442d.run.stderr [Errno 1] Operation not permitted: './cabal/package.conf.T5442d.global' [Errno 90] Directory not empty: './cabal/package.conf.T5442d.global' [Errno 1] Operation not permitted: './cabal/package.conf.T5442d.user' [Errno 90] Directory not empty: './cabal/package.conf.T5442d.user' [Errno 1] Operation not permitted: './cabal/package.conf.T5442d.extra' Not sure if these are legitimately harmful, but something is going wrong. I am running ghc head on latest msys2. I also tried running the process as administrator to rule out permission issues due to handling symlinks. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9677> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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