[GHC] #12024: GHC leaks GHC.Prim.~# into type
:info X'
#12024: GHC leaks GHC.Prim.~# into type -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 (Type checker) | 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: -------------------------------------+------------------------------------- {{{#!hs data A a where X :: A [xxx] pattern X' = X }}} the inferred type of which is {{{ pattern X' :: () => t GHC.Prim.~# [xxx] => A t }}} Casts use unlifted equality as I understand it, but lifted would present a nicer UI: {{{#!hs pattern X' :: () => t ~> [xxx] => A t pattern X' = X }}} In my own code this means I get the following monster {{{#!hs pattern MkArr :: () => (GetTy a, GetTy b, GetTy t, a GHC.Prim.~# 'Sca ('Number 'I32), b GHC.Prim.~# 'Sca a1, t GHC.Prim.~# 'Arr a1, GetSca a1) => Exp a -> Id -> Exp b -> Exp t }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12024 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12024: GHC leaks GHC.Prim.~# into type -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 7.10.3 checker) | 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 Iceland_jack): * cc: mpickering (added) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12024#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12024: GHC leaks GHC.Prim.~# into type -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 7.10.3 checker) | Keywords: Resolution: | PatternSynonyms 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 Iceland_jack): * keywords: => PatternSynonyms -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12024#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12024: GHC leaks GHC.Prim.~# into type -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 7.10.3 checker) | Keywords: Resolution: | PatternSynonyms Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): `:info` uses `IfaceType.pprIfaceType` which is currently less clever than `TyCoRep.pprType` (look for `Opt_PrintEqualityRelations` in the latter). This will be fixed by #16660. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12024#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12024: GHC leaks GHC.Prim.~# into type -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature request | Status: patch Priority: normal | Milestone: Component: Compiler (Type | Version: 7.10.3 checker) | Keywords: Resolution: | PatternSynonyms Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: T12024 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * testcase: => T12024 * status: new => patch Comment: This has been fixed with #11660. Testcase in Phab:D2702. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12024#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12024: GHC leaks GHC.Prim.~# into type
-------------------------------------+-------------------------------------
Reporter: Iceland_jack | Owner:
Type: feature request | Status: patch
Priority: normal | Milestone:
Component: Compiler (Type | Version: 7.10.3
checker) | Keywords:
Resolution: | PatternSynonyms
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case: T12024
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Comment (by Ben Gamari
#12024: GHC leaks GHC.Prim.~# into type -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature request | Status: closed Priority: normal | Milestone: 8.2.1 Component: Compiler (Type | Version: 7.10.3 checker) | Keywords: Resolution: fixed | PatternSynonyms Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: T12024 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: patch => closed * resolution: => fixed * milestone: => 8.2.1 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12024#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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