smeenai added inline comments.
================ Comment at: include/__mutex_base:51 #ifndef _LIBCPP_CXX03_LANG - constexpr mutex() = default; +#ifdef __GLIBC__ + constexpr ---------------- EricWF wrote: > Limiting `constexpr` to GLIBC implementations only is incorrect; you want to > exclude MUSL. > > Also MUSL is wrong for not allowing `pthread_mutex_t mut = > PTHREAD_MUTEX_INITIALIZER` to be a constant expression, and MUSL should fix > that. I've used `__builtin_constant_p` to wok around a similarly non-conforming `PTHREAD_MUTEX_INITIALIZER` (from pthread-win32, which defines it to be `(void *)-1`): see the last part of https://stackoverflow.com/a/10376574/382079. It's a terrible hack, but it works. https://reviews.llvm.org/D18174 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
