[Sanitizers][Darwin][Test] Mark symbolize_pc test unsupported in Darwin/LSan context

[wrotki]

Summary

LSan is unsupported on Darwin anyway, and this test fals on public Darwin bots

[rsundahl]

LGTM. Thanks @wrotki!

[hans]

Somehow this seems to have made it worse on the bot: https://green.lab.llvm.org/green/view/Clang/job/clang-stage1-RA/34927/

Now it's failing

SanitizerCommon-tsan-x86_64-Darwin.SanitizerCommon-tsan-x86_64-Darwin.symbolize_pc.cpp
SanitizerCommon-tsan-x86_64h-Darwin.SanitizerCommon-tsan-x86_64h-Darwin.symbolize_pc.cpp
SanitizerCommon-ubsan-x86_64-Darwin.SanitizerCommon-ubsan-x86_64-Darwin.symbolize_pc.cpp
SanitizerCommon-ubsan-x86_64h-Darwin.SanitizerCommon-ubsan-x86_64h-Darwin.symbolize_pc.cpp

instead.

We also saw those in Chromium after this change (http://crbug.com/1462534), but they passed on the next build, so perhaps this test is just flaky on Mac somehow?

[wrotki]

This test was failing before w. Tsan and Ubsan, but these failures disappeared, only failures were lean. I'd guess that just disabling lean will leave things clean, but it apparently didn't.

Will look into Tsan/UBsan failures

[wrotki]

s/lean/lsan/ above. My spell checker is driving me nuts.

compiler-rt/test/sanitizer_common/TestCases/symbolize_pc.cpp

 // RUN: %clangxx -O0 %s -o %t
 // RUN: %env_tool_opts=strip_path_prefix=/TestCases/ %run %t 2>&1 | FileCheck %s
 //
 // Tests __sanitizer_symbolize_pc.
 
 // FIXME: Investigate why it does not print GLOBAL_VAR_ABC.
 // XFAIL: hwasan && target=aarch64{{.*}}
+// LSan tests fail on Darwin
+// UNSUPPORTED: darwin && lsan
 
 #include <stdio.h>
 #include <sanitizer/common_interface_defs.h>
 
 int GLOBAL_VAR_ABC;
 
 void SymbolizeSmallBuffer() {
   char data[] = "abcdef";