Simplify allocator_returns_null.cc test

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224837 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] Allow enabling coverage at activation.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224838 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] Disable __sanitizer_cov_dump registration on Windows.

Looks like we can't use atexit() during ASan initialization on Windows.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224839 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] sancov.py: print status to stderr


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224840 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Tweak sancov.py output.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224841 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r224838, r224839.

Flaky failures on the build bots.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224850 91177308-0d34-0410-b5e6-96231b3b80d8