#5147: GHCi ignores missing instance
--------------------------------------+-------------------------------------
Reporter: boris | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.4.1
Component: GHCi | Version: 7.0.2
Keywords: linker, data families | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: GHC accepts invalid
program
--------------------------------------+-------------------------------------
Comment(by simonpj@…):
commit 3bf0520aea5acbecb83dcc0fc722c79ce9f5723c
{{{
Author: Simon Peyton Jones <[email protected]>
Date: Wed Aug 3 07:46:50 2011 +0100
Include the instances of associated types in the "extras" of a class
This fixes Trac #5147, which was going wrong because
the class ABI fingerprint wasn't changing when we added
or removed a Show instance to the associated type.
compiler/iface/IfaceSyn.lhs | 10 +++++++++-
compiler/iface/MkIface.lhs | 24 ++++++++++++++++++++----
2 files changed, 29 insertions(+), 5 deletions(-)
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5147#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
