GCC - How to realign stack?

Question

I try to build an application which uses pthreads and __m128 SSE type. According to GCC manual, default stack alignment is 16 bytes. In order to use __m128, the requirement is t

Answer 1

This shouldn't be happening in the first place, but to work around the problem you can try:

void *f(void *x)
{
   __m128 y __attribute__ ((aligned (16)));
   ...
}