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

Martin Gieseking martin.gieseking at uos.de
Wed May 7 12:33:54 UTC 2014


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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