Date: Sun, 11 May 2014 16:08:37 -0400 From: James Cloos <cloos@...loos.com> To: Rich Felker <dalias@...c.org> Cc: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>, musl@...ts.openwall.com Subject: Re: Broken GCC versions: 4.8.2 and 4.9.0 >>>>> "RF" == Rich Felker <dalias@...c.org> writes: RF> I've tested it on gcc.godbolt.org and others have tested with local RF> gcc 4.8.2 and 4.9.0, probably distro-provided (I didn't ask). I just tried debian-sid's 4.9. That does show the bug. As does their gcc-snapshot version (a 4.10 pre). Perhaps the distro(s) which have the bug with 4.8.2 backported the commit where the bug first occurs? RF> I wonder if the broken GCC is using isl/cloog I use the graphite optimizer on my Gentoo box (which generated the assembly I quoted). The graphite code is only used when one or more of -floop-interchange -floop-strip-mine -floop-block are specified. Testing with those options doesn't change the results. -JimC -- James Cloos <cloos@...loos.com> OpenPGP: 0x997A9F17ED7DAEA6
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