Compiling this snippet from my vector library for x64 with speed optimizations enabled fails with an internal error. The flags used are as follows:
-std:C17 -Tx64-coff -arch:SSE2 -Ot -Ob1 -fp:fast -W2 -Ze
#include <stdalign.h>
typedef struct {
alignas(16) float data[4];
} vec_t;
typedef struct {
alignas(16) float data[4][4];
} mat_t;
mat_t translate(vec_t v)
{
mat_t res = {.data = {
{1, 0, 0, v.data[0]},
{0, 1, 0, v.data[1]},
{0, 0, 1, v.data[2]},
{0, 0, 0, 1}
}};
return res;
}
fatal error: Internal error: 'Access violation' at 0x000000013fa01b50.
OK, I can reproduce this. I will take a look...