EricWF added a comment.
> musl's pthread implementations use volatile types in their structs which is
> not being constexpr in C++11 but is in C++14.
This means that libc++'s std::mutex is unsafe to use during dynamic
initialization in C++11 with MUSL, which would really suck except that Clang
emits always emits the initialization as a constant expression, ever if it's
not guaranteed by the core language.
@mclow.lists Do you have any issue bumping the std version while building for
MUSL only?
================
Comment at: CMakeLists.txt:327
# Required flags ==============================================================
set(LIBCXX_STANDARD_VER c++11 CACHE INTERNAL "internal option to change build
dialect")
add_compile_flags_if_supported(-std=${LIBCXX_STANDARD_VER})
----------------
Why not just set `LIBCXX_STANDARD_VER` differently instead of replacing it
after the fact?
Repository:
rL LLVM
https://reviews.llvm.org/D25491
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