f4c0c708a375c621cb2f656a6d4f99e0feb19b39

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@204777 91177308-0d34-0410-b5e6-96231b3b80d8
Add tests that should fail when lock() throws. THis is part of LWG issue #2135. No library changes here.
Description
No description provided
Languages
C++
98.1%
HTML
1.2%
Python
0.4%
CMake
0.2%