#4203: ghc-6.12.3 fails to compile xmonad-0.9.1 tests
--------------------------------------------+-------------------------------
Reporter: slyfox | Owner: simonpj
Type: bug | Status: closed
Priority: high | Milestone: 6.14.1
Component: Compiler | Version: 6.12.3
Resolution: fixed | Keywords:
Testcase: simplCore/shouldCompile/T4203 | Blockedby:
Difficulty: | Os: Unknown/Multiple
Blocking: | Architecture: Unknown/Multiple
Failure: Compile-time crash |
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Changes (by simonpj):
* status: new => closed
* testcase: yet => simplCore/shouldCompile/T4203
* resolution: => fixed
Comment:
Fixed by
{{{
Thu Aug 12 14:11:33 BST 2010 [email protected]
* Improve the Specialiser, fixing Trac #4203
Simply fixing #4203 is a tiny fix: in case alterantives we should
do dumpUDs *including* the case binder.
But I realised that we can do better and wasted far too much time
implementing the idea. It's described in
Note [Floating dictionaries out of cases]
}}}
If we want to fix 6.12 as well there's a much simpler fix, but I don't
think we plan another 6.12 release, so I have not done that. Meanwhile
I'll close it.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4203#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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