[email protected] writes: > 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 ?
They are allowed to overlap. The 'reverse' and 'upsidedown' arguments give the direction of the blt, precisely for this reason. So this is a real bug. Soren _______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
