> Troy Heber is debugging this on alpha and he reports that rebuilding
> ruby1.8 with gcc 4.1 fixes it.  Also, downgrading to ruby1.8 1.8.4-1
> fixed it, which I attribute to the fact that this too used a
> different version of gcc for the alpha build.  (Nobody has checked
> whether any of this is also true on arm.)

Further info from Troy: gcc 4.0.3 with -fno-strict-aliasing also seems
to fix this bug.  I would strongly suggest adding -fno-strict-aliasing
in any case (or _properly_ fixing the gcc warnings related to this),
since it's quite possible that other bugs are also lurking due to this.

Peter

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