Date: Tue, 14 Oct 2014 17:33:42 +0200 From: Szabolcs Nagy <nsz@...t70.net> To: musl@...ts.openwall.com Subject: Re: RE???[BUG][math]build musl with optimizing flags, some math functions are broken. * bobodog <8192542@...com> [2014-10-14 15:09:45 +0800]: > Further confirmation, the problem is -ffast-math flag, just remove this flag, all tests passed, please fix this bug, the openbsd's msun math library, have not any problem with this flags. > how did you verify that openbsd "have not any problem with this flag" ? (without looking at your methodology i can guarantee that openbsd msun math library is completely broken with gcc -ffast-math too unless openbsd explicitly disabled this option in their compiler.. they maintain their own compiler so they can implement -ffast-math as a no-op, but a modern unpatched gcc with -ffast-math breaks all math functions which depend on exact ieee arithmetics)
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