patch applied (ghc): Give -fwrapv to gcc when it supports it

Mon, 15 Jan 2007 11:51:53 -0800 

Mon Jan 15 11:42:50 PST 2007  Ian Lynagh <[EMAIL PROTECTED]>
  * Give -fwrapv to gcc when it supports it
  Fixes trac #952: Haskell requires consistent overflow behaviour, which
  gcc doesn't give without this flag.

    M ./aclocal.m4 +12
    M ./compiler/main/DriverPipeline.hs +4
    M ./configure.ac +1

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