Paul Pluzhnikov wrote: > Alan Woodland <[EMAIL PROTECTED]> writes:
[snipped] >>- I'm using template specialization to facilitate this, so I >>added the following asserts just before the offending code: >> >>assert(__alignof__(__m128) == __alignof__(this->data[0])); >>assert(__alignof__(__m128) == __alignof__(o.data[0])); > > > These assert()s aren't good. From "info gcc": > [snipped] Thanks for the reply. I've looked into why data[0] wouldn't be aligned right, and produced a simple example below: __m128 a,b; __m128 *c = new __m128[10]; std::cout << c << std::endl; std::cout << &a << ", " << &b << std::endl; _mm_add_ps(a,b); _mm_add_ps(c[0], c[1]); This code segfaults on the last line quoted here, which isn't surprising because c isn't aligned correctly. My question now is twofold: a) Why isn't c aligned how __m128 needs to be? and b) How to work around it? Is it even possible to get an array of __m128s aligned correctly? Thanks, Alan _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
