On Thu, 2010-02-04 at 15:50 +0100, [email protected] wrote: > There is a fastpath in fbBlt() using memcpy if the source and dest rasters are > properly aligned. This fastpath rely on MEMCPY_WRAPPED, which is (sometime) a > mere memcpy(). > > So, if the rasters do overlap the behavior is undefined. On my loongson (mips) > at home, it segfaults, bus error or sometime hangs. > > This is easy to replace this memcpy by a memmove to solve this bug, but I > wonder if these rasters are actually allowed to overlap ? If not, then the > bug > happens earlier. That's a long time since I programmed for X11 but based on > XCopyArea manpage I would say it's OK to overlap, so memcpy really should be > memmove. > > What do you think ?
Yeah, probably. - ajax
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