[PATCH] winecrt0: Do not expect jmp_buf to be aligned in __wine_longjmp on x86_64.

Paul Gofman pgofman at codeweavers.com
Mon Jul 13 16:38:18 CDT 2020

On 7/13/20 23:05, Alexandre Julliard wrote:
> Paul Gofman <pgofman at codeweavers.com> writes:
>> There is no guarantee that jmp_buf is 16 bytes aligned.
> It is using DECLSPEC_ALIGN(16) though. Where do you see it being
> misaligned?
Well, I was getting that after turning NtOpenDirectoryObject locally
into syscall thunk from  __TRY / __CATCH block used by IsBadStringPtrW()
from debugstr_w(). But after you pointed out that alignment is there
which I initially missed, I found that the stack alignment which is
present in syscall thunk generated code seems not to be performed
(apparently, not intentionally) if the size of arguments is <= 0x20. I
should rather be fixing that, sorry for the noise.

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