[PATCH] xkb: fix invalid memory writes in _XkbCopyGeom.
dottedmag at dottedmag.net
Fri Jun 4 00:15:39 PDT 2010
Twas brillig at 15:41:36 04.06.2010 UTC+10 when peter.hutterer at who-t.net did gyre and gimble:
PH> for extra fun - this bug is present in pretty all server versions since 1.2
PH> but didn't get exposed until the xalloc → malloc changes. I just took the
PH> 1.7 sources and valgrind didn't complain. Changed xalloc to malloc, valgrind
PH> gives out.
PH> Any guesses to why xalloc hides this issue are appreciated.
Due to additional 4 bytes alignment in Xalloc, so it worked 75% of the
time :) Hence xalloc->malloc made this bug explicit. I will have a look.
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