When compiling in gentoo libva, it triggered a warning about a possible undefined behavior in a loop. Maybe it is caused by the CXXFLAGS I am using, but anyway it is worth looking at.
The warning I got was:
* /var/tmp/portage/x11-
libs/libva-1.4.1/work/libva-1.4.1/va/x11/va_dricommon.c:90:46: warning:
iteration 31u invokes undefined behavior [-Waggressive-loop-optimizations]
The CFLAGS I am using:
GRAPHITE="-floop-interchange -ftree-loop-distribution -floop-strip-mine -
floop-block -ftree-vectorize"
CFLAGS="-march=native -O2 -pipe ${GRAPHITE}"
Using gcc 4.9.2
Thanks for looking into it.
David.
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