package doesn't build due to possible regression in gcc 4.9.0

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Hi,

I'm currently trying to rebuild the zorba package due to a broken dependency in rawhide. Unfortunately, the newly built binary segfaults when it's compiled with gcc 4.9.0. The same package builds correctly for f20 (using gcc 4.8.2). It seems that this is a regression in the optimizer of gcc 4.9.0 since the issue only appears when building with -O1, -O2, or -O3. An "unoptimized build" (-O0) succeeds.

Unfortunately, it's pretty hard to debug an optimized binary in order to isolate the origin of the segfault. It would be great if somebody could help to track down the issue.

Here is the corresponding BZ bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1095292

Martin
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