Re: [GHC] #5513: panic! (the 'impossible' happened) on ‘deriving instance lowercase_name a’

2011-09-30 Thread GHC 
#5513: panic! (the 'impossible' happened) on ‘deriving instance lowercase_name 
a’
---+
  Reporter:  andersk   |  Owner:  
  Type:  bug   | Status:  closed  
  Priority:  normal|  Milestone:  
 Component:  Compiler  |Version:  7.3 
Resolution:  fixed |   Keywords:  
  Testcase:  rename/should_fail/T5513  |  Blockedby:  
Difficulty:| Os:  Unknown/Multiple
  Blocking:|   Architecture:  Unknown/Multiple
   Failure:  Compile-time crash|  
---+
Changes (by simonpj):

  * status:  new = closed
  * testcase:  = rename/should_fail/T5513
  * resolution:  = fixed


Comment:

 Thaks for the report; now fixed.

 Simon

-- 
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/5513#comment:2
GHC http://www.haskell.org/ghc/
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Re: [GHC] #5513: panic! (the 'impossible' happened) on ‘deriving instance lowercase_name a’

2011-09-29 Thread GHC 
#5513: panic! (the 'impossible' happened) on ‘deriving instance lowercase_name 
a’
-+--
Reporter:  andersk   |   Owner:
Type:  bug   |  Status:  new   
Priority:  normal|   Component:  Compiler  
 Version:  7.3   |Keywords:
Testcase:|   Blockedby:
  Os:  Unknown/Multiple  |Blocking:
Architecture:  Unknown/Multiple  | Failure:  Compile-time crash
-+--

Comment(by simonpj@…):

 commit ce1f1cd5f0ec5f07475e44cf2b7f72e0cbb8a963
 {{{
 Author: Simon Peyton Jones simo...@microsoft.com
 Date:   Thu Sep 29 16:47:57 2011 +0100

 Tidy up the shape-checking for instance types
 (in instance and standalone deriving decls)

 Fixes Trac #5513.

  compiler/parser/Parser.y.pp  |7 +++
  compiler/parser/RdrHsSyn.lhs |   21 -
  compiler/rename/RnNames.lhs  |   10 +++---
  compiler/rename/RnSource.lhs |4 ++--
  compiler/rename/RnTypes.lhs  |   17 -
  5 files changed, 28 insertions(+), 31 deletions(-)
 }}}

-- 
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/5513#comment:1
GHC http://www.haskell.org/ghc/
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[GHC] #5513: panic! (the 'impossible' happened) on ‘deriving instance lowercase_name a’

2011-09-27 Thread GHC 
#5513: panic! (the 'impossible' happened) on ‘deriving instance lowercase_name 
a’
-+--
Reporter:  andersk   |   Owner:
Type:  bug   |  Status:  new   
Priority:  normal|   Component:  Compiler  
 Version:  7.3   |Keywords:
Testcase:|   Blockedby:
  Os:  Unknown/Multiple  |Blocking:
Architecture:  Unknown/Multiple  | Failure:  Compile-time crash
-+--
 This bogus code:
 {{{
 {-# LANGUAGE StandaloneDeriving #-}
 deriving instance lowercase_name a
 }}}
 causes current GHC HEAD to panic:
 {{{
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.3.20110927 for x86_64-unknown-linux):
 nameModule lowercase_name{tv aar}

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

 I also tested GHC 7.0.3, which correctly diagnosed the problem:
 {{{
 crash.hs:2:19: Malformed instance header: lowercase_name a
 }}}

-- 
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/5513
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler

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