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Re: [GHC] #3094: Some GHC.* module should export word size and heap object header size
by GHC 19 Mar '18

19 Mar '18

#3094: Some GHC.* module should export word size and heap object header size -------------------------------------+------------------------------------- Reporter: duncan | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: libraries | Version: 6.10.1 (other) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: 8.6.1 => Comment: Removing milestone as no one is currently working on this. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3094#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12437: 20% regression in max_bytes_used for T1969
by GHC 19 Mar '18

19 Mar '18

#12437: 20% regression in max_bytes_used for T1969 -------------------------------------+------------------------------------- Reporter: simonmar | Owner: osa1 Type: bug | Status: new Priority: highest | Milestone: 8.2.1 Component: Compiler | Version: 8.0.1 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: -------------------------------------+------------------------------------- This is 20% worse: {{{ =====> T1969(normal) 1 of 1 [0, 0, 0] cd "./T1969.run" && "/data/users/smarlow/ghc/inplace/test spaces/ghc- stage2" -c T1969.hs -dno-debug-output -no-user-package-db -rtsopts -fno- warn-missed-specialisations -fshow-warning-groups +RTS -G1 -RTS +RTS -V0 -tT1969.comp.stats --machine-readable -RTS max_bytes_used value is too high: Expected T1969(normal) max_bytes_used: 15017528 +/-15% Lower bound T1969(normal) max_bytes_used: 12764898 Upper bound T1969(normal) max_bytes_used: 17270158 Actual T1969(normal) max_bytes_used: 18071064 Deviation T1969(normal) max_bytes_used: 20.3 % *** unexpected stat test failure for T1969(normal) }}} One of these patches is the culprit, but I can't tell from the build logs because the build was broken between these two points: {{{ commit 6a4dc891fa7a8024d8f9f03b98ad675ff5fcbd91 Author: Ömer Sinan Ağacan <omeragacan(a)gmail.com> Bump Haddock submodule commit 8d4760fb7b20682cb5e470b24801301cfbbdce3b Author: Simon Peyton Jones <simonpj(a)microsoft.com> Comments re ApThunks + small refactor in mkRhsClosure commit 9c54185b26922d88e516942aad946f05f707d7ce Author: Simon Peyton Jones <simonpj(a)microsoft.com> Comments + tiny refactor of isNullarySrcDataCon commit a09c0e3e68c96882a1fb392c9dbeea84056bf32f Author: Simon Peyton Jones <simonpj(a)microsoft.com> Comments only commit 714bebff44076061d0a719c4eda2cfd213b7ac3d Author: Ömer Sinan Ağacan <omeragacan(a)gmail.com> Implement unboxed sum primitive type }}} The patch immediately preceding this sequence does not have the failure: https://phabricator.haskell.org/rGHC83e4f49577665278fe08fbaafe2239553f3c448e (follow the link to the build) and the final patch in this sequence *does* have the failure: https://phabricator.haskell.org/rGHC6a4dc891fa7a8024d8f9f03b98ad675ff5fcbd91 (along with an improvement in T9675) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12437> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10933: REMOVED pragma
by GHC 19 Mar '18

19 Mar '18

#10933: REMOVED pragma -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | -------------------------------------+------------------------------------- Say I have a function that's been deprecated for some time. Then I remove it. Some clients will still use the now-missing function. It would be nice to give a helpful error message, instead of a "symbol not found" error. I thus propose a `REMOVED` pragma. The syntax is identical to `DEPRECATED`, except for the name of the pragma. Whenever a `REMOVED` function is mentioned, the error message includes the string from the pragma. (This includes trying to define a `REMOVED` class method in an instance.) See Design/DeprecationMechanisms for more info and related efforts. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10933> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7860: Add more bit fiddling functions to 'integer-gmp'
by GHC 19 Mar '18

19 Mar '18

#7860: Add more bit fiddling functions to 'integer-gmp' -------------------------------------+------------------------------------- Reporter: lebedev | Owner: hvr Type: feature request | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 7.6.3 Resolution: | Keywords: integer-gmp Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #3489, #9835 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: 8.6.1 => Comment: It sounds like there is still a bit more work to be done here. Removing milestone as no one is currently working on this. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7860#comment:23> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11092: ApiAnnotations : make annotation for shebang
by GHC 19 Mar '18

19 Mar '18

#11092: ApiAnnotations : make annotation for shebang -------------------------------------+------------------------------------- Reporter: alanz | Owner: alanz Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.10.2 Keywords: | Operating System: Unknown/Multiple ApiAnnotations | Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Currently a valid haskell file can have a first line of the form {{{#!lhs #!/usr/bin/env runhaskell }}} This does not end up as anything that can have an API Annotation, and so gets lost on round tripping. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11092> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10640: Document prim-ops
by GHC 19 Mar '18

19 Mar '18

#10640: Document prim-ops -------------------------------------+------------------------------------- Reporter: bgamari | Owner: bgamari Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Currently documentation is quite scarce for many primops (particularly the BCO operations). -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10640> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4879: Deprecate exports
by GHC 19 Mar '18

19 Mar '18

#4879: Deprecate exports -------------------------------------+------------------------------------- Reporter: basvandijk | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.0.1 Resolution: | Keywords: deprecate | warning Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #10071 #2119 | Differential Rev(s): Phab:D638 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: 8.6.1 => Comment: Removing milestone as there is currently no one actively working on this. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4879#comment:30> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3427: control what sort of entity a deprecated pragma applies to
by GHC 19 Mar '18

19 Mar '18

#3427: control what sort of entity a deprecated pragma applies to -------------------------------------+------------------------------------- Reporter: igloo | Owner: thoughtpolice Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 6.10.4 Resolution: | Keywords: deprecate | warning, newcomer Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * keywords: deprecate warning => deprecate warning, newcomer * milestone: 8.6.1 => Comment: Removing milestone as there is currently no one actively working on this. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3427#comment:16> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7273: Binary size increase in nofib/grep between 7.6.1 and HEAD
by GHC 19 Mar '18

19 Mar '18

#7273: Binary size increase in nofib/grep between 7.6.1 and HEAD -------------------------------------+------------------------------------- Reporter: simonmar | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: 8.6.1 => Comment: Removing milestone as there is currently no one actively working on this. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7273#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10189: explicit promotions of prefix data constructors can't be parsed naturally
by GHC 19 Mar '18

19 Mar '18

#10189: explicit promotions of prefix data constructors can't be parsed naturally -------------------------------------+------------------------------------- Reporter: Kinokkory | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 (Parser) | Operating System: Unknown/Multiple Keywords: | Type of failure: GHC rejects Architecture: | valid program Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- When used as an infix operator, a data constructor is explicitly promoted simply with `'` prefixed, but when used as a prefix operator enclosed between `(` and `)`, it is explicitly promoted only with `'` put before `(`, not before the constructor. On the other hand, messages of GHC and GHCi indicate that a data constructor operator in a prefix form is promoted by putting `'` before the constructor! (as in `forall (k :: BOX) (k :: BOX). (':*)` below.) I believe that this is a matter of parsing. The parser should admit `(':*)` as well as `'(:*)` for the naturalness of the syntax. In a GHCi: {{{#!hs > :set -XDataKinds -XTypeOperators > data a :* b = a :* b > :kind! Int :* Int Int :* Int :: * = Int :* Int > :kind! Int ':* Int Int ':* Int :: * :* * = Int ':* Int > :kind! (:*) (:*) :: * -> * -> * = (:*) > :kind! '(:*) '(:*) :: k -> k1 -> k :* k1 = forall (k :: BOX) (k :: BOX). (':*) > :kind! (':*) <interactive>:1:3: parse error on input ‘:*’ }}} (By the way I assume that Template Haskell quotes (`'function` and `''Type`) are parsed by the same mechanism as the one for the explicit promotion syntax. I hope both styles of quotes for prefix operators will be admitted because currently only the `'(` `''(` style is admitted.) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10189> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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