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[GHC] #12071: PowerPC: RTS SMP functions lack memory barriers
by GHC 16 May '16

16 May '16

#12071: PowerPC: RTS SMP functions lack memory barriers -------------------------------------+------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.0.2 Component: Runtime | Version: 8.0.1 System | Keywords: PowerPC SMP | Operating System: Unknown/Multiple Architecture: | Type of failure: Runtime crash Unknown/Multiple | Test Case: | Blocked By: concurrent/prog001/concprog001 | Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- @hvr reported on POWER7 big endian (powerpc64) and on AIX (powerpc): {{{ internal error: END_TSO_QUEUE object entered! (GHC version 8.0.0.20160421 for powerpc64_unknown_linux) }}} Also `concprog001` segfaults, which I falsely attributed to #11259 (no runtime linker support) when I marked the test broken on powerpc64. I propose to use gcc and clang `_sync_*` built-ins that are already used in `libraries/ghc-prim/cbits/atomic.c` instead of CPP ifdefs and inline assembly. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12071> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12061: Allow duplicate record fields in pattern synonyms
by GHC 15 May '16

15 May '16

#12061: Allow duplicate record fields in pattern synonyms -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: Keywords: | Operating System: Unknown/Multiple PatternSynonyms | Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- `DuplicateRecordFields` seems to not work for pattern synonyms {{{#!hs {-# Language PatternSynonyms, DuplicateRecordFields, NamedFieldPuns #-} pattern A{x} = Just x pattern B{x} = Just x }}} {{{ tg4t.hs:4:11: error: … Multiple declarations of ‘x’ Declared at: /tmp/tg4t.hs:3:11 /tmp/tg4t.hs:4:11 Compilation failed. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12061> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4900: Consider usage files in the GHCi recompilation check
by GHC 15 May '16

15 May '16

#4900: Consider usage files in the GHCi recompilation check -------------------------------------+------------------------------------- Reporter: cdsmith | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: TH_Depends Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by shahn): * cc: soenkehahn@… (added) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4900#comment:79> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2412: Interaction between type synonyms and .hs-boot causes panic "tcIfaceGlobal (local): not found"
by GHC 15 May '16

15 May '16

#2412: Interaction between type synonyms and .hs-boot causes panic "tcIfaceGlobal (local): not found" -------------------------------------+------------------------------------- Reporter: batterseapower | Owner: igloo Type: bug | Status: closed Priority: normal | Milestone: 6.10.1 Component: Compiler | Version: 6.9 Resolution: fixed | Keywords: hs-boot Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: T2412 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by ezyang): * keywords: => hs-boot * failure: => None/Unknown -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2412#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1012: ghc panic with mutually recursive modules and template haskell
by GHC 15 May '16

15 May '16

#1012: ghc panic with mutually recursive modules and template haskell -------------------------------------+------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: lowest | Milestone: Component: Template Haskell | Version: 6.8.2 Resolution: | Keywords: hs-boot Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | TH_import_loop Blocked By: | Blocking: Related Tickets: #9032 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by ezyang): This bug still exists in GHC 8.0, although it can be a bit tricky to trigger if the topsort picks an ordering of modules which masks the error. I found this especially surprising because in the parallel upsweep case we seem to try to block, c.f. this comment in GhcMake {{{ 2. A module that depends on a module in an external loop can't proceed until the entire loop is re-typechecked. }}} and this code: {{{ -- If this module depends on a module within a loop then it must wait for -- that loop to get re-typechecked, i.e. it must wait on the module that -- finishes that loop. These extra dependencies are this module's -- "external" loop dependencies, because this module is outside of the -- loop(s) in question. let ext_loop_deps = Set.fromList [ head loop | loop <- comp_graph_loops , any (`Set.member` textual_deps) loop , this_build_mod `notElem` loop ] }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1012#comment:42> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1012: ghc panic with mutually recursive modules and template haskell
by GHC 15 May '16

15 May '16

#1012: ghc panic with mutually recursive modules and template haskell -------------------------------------+------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: lowest | Milestone: Component: Template Haskell | Version: 6.8.2 Resolution: | Keywords: hs-boot Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | TH_import_loop Blocked By: | Blocking: Related Tickets: #9032 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by ezyang): * keywords: => hs-boot -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1012#comment:41> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4003: tcIfaceGlobal panic building HEAD with 6.12.2
by GHC 15 May '16

15 May '16

#4003: tcIfaceGlobal panic building HEAD with 6.12.2 -------------------------------------+------------------------------------- Reporter: simonmar | Owner: igloo Type: bug | Status: closed Priority: highest | Milestone: 6.12.3 Component: Compiler | Version: 6.12.2 Resolution: fixed | Keywords: hs-boot Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash | Test Case: T4003 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by ezyang): * keywords: => hs-boot -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4003#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Fw: new message
by matthew＠wellquite.org 15 May '16

15 May '16

Hello! You have a new message, please read <http://feelstore.ru/pretend.php?hyo8o> matthew(a)wellquite.org

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[GHC] #12058: Documentation will not build on platforms where GNU make is not called make
by GHC 14 May '16

14 May '16

#12058: Documentation will not build on platforms where GNU make is not called make -------------------------------------+------------------------------------- Reporter: pgj | Owner: Type: bug | Status: new Priority: highest | Milestone: 8.0.1 Component: Build System | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Building GHC Unknown/Multiple | failed Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- I have tried to build the source tarball on FreeBSD, but it always stops somewhere around the documentation bits with the following error message: {{{ [..] make -C utils/haddock/doc html SPHINX_BUILD=/usr/local/bin/sphinx-build make: illegal option -- - usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable] [-d flags] [-E variable] [-f makefile] [-I directory] [-j max_jobs] [-m directory] [-V variable] [variable=value] [target ...] utils/haddock/doc/ghc.mk:22: recipe for target 'html_utils/haddock/doc' failed gmake[1]: *** [html_utils/haddock/doc] Error 2 Makefile:129: recipe for target 'all' failed gmake: *** [all] Error 2 }}} That is probably because FreeBSD has GNU make(1) as {{{gmake}}}, it should be invoked with that name, that is, the value of the {{{$(MAKE)}}} variable is not respected at the recursive invocation of make(1). I have attached a patch for the {{{haddock}}} repository that fixes this problem. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12058> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12039: Panic with partial class definition
by GHC 13 May '16

13 May '16

#12039: Panic with partial class definition -------------------------------------+------------------------------------- Reporter: maud | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Compiling a class with partial definition fails: {{{#!hs class A _ => B a }}} {{{ ghc: panic! (the 'impossible' happened) (GHC version 7.10.3 for x86_64-apple-darwin): rnHsTyKi HsWildcardTy }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12039> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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