#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
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Comment(by simonpj@…):
commit ce1f1cd5f0ec5f07475e44cf2b7f72e0cbb8a963
{{{
Author: Simon Peyton Jones <[email protected]>
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>
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