------- Comment #5 from martin at mpa-garching dot mpg dot de 2009-12-17 14:12 ------- > GCC with -std=c99 makes sure to properly handle the i387 FPU excess precision. > With -fexcess-precision=fast the code is as fast (and non-conforming) like > with GCC 4.4. Using -std=gnu99 is also an option.
Thanks a lot for pointing this out! I was aware of the floating-point change but simply had not realized it would be switched on by -std=c99. I imagine that this might catch many people by surprise once 4.5.0 is released, and it might be politically advisable to mention it (and the "fix") in a place where users can't miss it. Is there a plan to mention this (in a prominent place) in the release notes? Or in the FAQ or the "non-bugs" section of bugs.html? I can prepare a documentation patch if this is desirable. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42376
