Ouch, what a waste of time on my side :-( This bugfix is not mentioned in the "notable bug fixes" here<http://haskell.org/ghc/docs/6.10.2/html/users_guide/release-6-10-2.html>
Since this is such a severe bug, I would recommend listing it :) Anyway, I have a very small repro test case now. Will certainly test this with GHC 6.10.2. On Fri, Apr 3, 2009 at 10:35 PM, Ian Lynagh <ig...@earth.li> wrote: > On Fri, Apr 03, 2009 at 10:10:17PM +0200, Peter Verswyvelen wrote: > > I tried both precise and fast, but that did not help. Compiling to SSE2 > > fixed it, since that does not use a floating point stack I guess. > > You didn't say what version of GHC you are using, but it sounds like > this might already be fixed in 6.10.2 by: > > Tue Nov 11 12:56:19 GMT 2008 Simon Marlow <marlo...@gmail.com> > * Fix to i386_insert_ffrees (#2724, #1944) > The i386 native code generator has to arrange that the FPU stack is > clear on exit from any function that uses the FPU. Unfortunately it > was getting this wrong (and has been ever since this code was written, > I think): it was looking for basic blocks that used the FPU and adding > the code to clear the FPU stack on any non-local exit from the block. > In fact it should be doing this on a whole-function basis, rather than > individual basic blocks. > > > Thanks > Ian > >
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