http://bugs.winehq.org/show_bug.cgi?id=28266
--- Comment #5 from GyB gyebro69@gmail.com 2011-09-04 02:21:06 CDT --- (In reply to comment #4)
FLAGS="-g -gdwarf-2 -O0" ./configure --disable-tests && make -j3
If you think it's unimportant compilation issue, you can close this bug.
Is that only a typo here or you indeed compiled the source by passing FLAGS (instead of CFLAGS) to the configure script? In the later case FLAGS was ignored and actually -O2 was used during compilation. You can verify that by inspecting the beginning of the generated Makefile: CFLAGS=....