[TSan] Fixup for r178128: verify that TSan indeed doesn't report race

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@178129 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Demangle global names in error reports.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@178131 91177308-0d34-0410-b5e6-96231b3b80d8