[Pure C] Clang is better than GCC

Sorry for the provocative title, but I'm too emotional these days. This code: #include <stdio.h> #include <string.h> struct tmp { int x, y, z; }; int main() { struct tmp* m_result_original=NULL; struct tmp* m_result_my_version=NULL; // m_result_original=do_something_version_1(); // m_result_my_version=do_something_version_2(); if (memcmp(m_result_original, m_result_my_version, sizeof(struct tmp)!=