https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65122
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> --- Oh, and I wonder if there is an aligned realloc (though C++ doesn't define sth like realloc and thus std::vector can't optimize the copy when reallocating?!). But for a C program using posix_memalign or any other such facility means realloc is out of the question as well.