#952: Floating point exception building HEAD with 6.6
----------------------+-----------------------------------------------------
Reporter: simonmar | Owner:
Type: bug | Status: closed
Priority: normal | Milestone: 6.6.1
Component: Compiler | Version: 6.6
Severity: normal | Resolution: fixed
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Multiple
Os: Multiple |
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Changes (by simonmar):
* architecture: x86_64 (amd64) => Multiple
* resolution: => fixed
* status: new => closed
* os: Linux => Multiple
Comment:
Fixed:
{{{
Fri Oct 20 16:39:25 BST 2006 Simon Marlow <[EMAIL PROTECTED]>
* In hashExpr, use Word32 rather than relying on wrapping behaviour of
Int
Fixes #952, as it turns out.
When compiling via C, we are at the mercy of C's undefined behaviour
with respect to overflow of signed integer operations, and this was
biting us here.
Perhaps we should always add the -fwrapv flag to gcc, but since
Haskell doesn't define overflow on Int either, it seemed the right
thing to do to fix this code anyway.
M ./compiler/coreSyn/CoreUtils.lhs -9 +17
}}}
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/952>
GHC <http://www.haskell.org/ghc/>
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