Hi Tim, These comparisons are not so useful, because they not only come from different compilers (gcc vs. clang) but also from systems with different libcs: there are differences regarding libm, calloc, thrd_create, pthread_sigmask, and other functions. It would be more useful to compare, on the _same_ system: - gcc vs. clang, - clag vs. clang -fsanitize=...
Bruno
