Hi, On 19/08/17 21:20, Carl Eugen Hoyos wrote: >> Am 19.08.2017 um 20:26 schrieb James Cowgill <jcowg...@debian.org>: >>> On 19/08/17 10:36, Carl Eugen Hoyos wrote: >>> Could you confirm that this is a regression since 31326143 (ie since >>> forever) and is not reproducible with f73a626a? >> >> Yes the code fails in the same place with 31326143 and worlds with >> f73a626a, although I don't think the ARM code is at fault here since the >> misaligned argument is coming from further up the call chain. > > (Not so sure: The new functions with stricter requirements are meant as > replacement for functions with lower requirements.)
pixblockdsp.h says "align 8" next to s2 which I assume means that the caller will guarantee the argument is aligned to 8 bytes. It wasn't aligned in this case which is why the ARM code blew up. > Thanks again for the very complete tests! > >>> Since I cannot produce the required gdb output, you will have to open >>> a ticket, sorry! >> >> OK. I'll see if the arguments are misaligned on x86 as well first. > > Probably, but that doesn't hurt or does it? I can reproduce the misalignment on x86 as well. x86 handles misaligned addresses (with a performance penalty) which is probably why it doesn't crash there. Thanks, James
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