Disable the ubsan-asan config on Darwin.

UBSan doesn't work together with ASan on Darwin yet, see http://llvm.org/bugs/show_bug.cgi?id=21112

llvm-svn: 218746

Author: ramosian-glider

compiler-rt/test/ubsan/TestCases/Integer/summary.cpp

@@ -1,7 +1,5 @@
 // RUN: %clangxx -fsanitize=integer %s -o %t && %t 2>&1 | FileCheck %s
 // REQUIRES: ubsan-asan
-// ubsan-asan doesn't work on Darwin yet.
-// XFAIL: darwin
 
 #include <stdint.h>
 

compiler-rt/test/ubsan/lit.common.cfg

@@ -21,6 +21,10 @@ if ubsan_lit_test_mode == "Standalone":
   config.available_features.add("ubsan-standalone")
   clang_ubsan_cflags = []
 elif ubsan_lit_test_mode == "AddressSanitizer":
+  if config.host_os == 'Darwin':
+    # ubsan-asan doesn't yet work on Darwin,
+    # see http://llvm.org/bugs/show_bug.cgi?id=21112.
+    config.unsupported = True
   config.name = 'UndefinedBehaviorSanitizer-AddressSanitizer'
   config.available_features.add("ubsan-asan")
   clang_ubsan_cflags = ["-fsanitize=address"]