[Bug 40423] Firefox GLX test crashes with Mesa 7.12-devel, Gallium 0.4 on AMD JUNIPER

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40423

--- Comment #19 from Michel Dänzer <michel at daenzer.net> 2011-09-29 04:07:25 PDT ---
(In reply to comment #17)
> Looking at the Valgrind error from comment 15, it suggests that
> _mesa_make_extension_string (extensions.c:912) makes the assumption that it's
> safe to read 4 bytes from a string and that assumption fails as the string is
> empty with just 1 byte allocated (and set to 0) by calloc.

Indeed, looks like a bug in gcc/glibc. Note that current Mesa Git works around
this by rounding up the allocation sizes to multiples of four bytes.

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