Re: https://bugzilla.redhat.com/show_bug.cgi?id=1127544 It appears that shared libraries compiled with -ffast-math (as libopenjpeg.so is) will call set_fast_math() in the library init code: Watchpoint 1: $mxcsr Old value = [ IM DM ZM OM UM PM ] New value = [ DAZ IM DM ZM OM UM PM FZ ] 0x00007fffe619d112 in set_fast_math () from /lib64/libopenjpeg.so.1 (gdb) bt #0 0x00007fffe619d112 in set_fast_math () from /lib64/libopenjpeg.so.1 #1 0x00007ffff7deaf2a in call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7fffffffd6a8, env=env@entry=0x7fffffffd6b8) at dl-init.c:76 This will then affect the floating point operations of all code run after the library is loaded, regardless of its use of -ffast-math or not, which can lead to some unexpected behavior. This seems like it's a pretty broad and generic problem and I'm wondering how best to handle it. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion@xxxxxxxx Boulder, CO 80301 http://www.nwra.com -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
