Re: Emacs-26 threads problem [win64]

[Richard Copley]

> I'm not sure how to resolve this issue, so ideas and comments on the
> analysis are welcome.

I think GCC's assumption that 0x40(%rbx) is 16-byte aligned derives
through some arithmetic from the assumption that the stack was 16-byte
aligned on entry. Can you try adding
    __attribute__ ((force_align_arg_pointer))
to the thread function?


__attribute__ ((force_align_arg_pointer))
static void *
run_thread (void *state)
{