[MSan] Add empty default blacklist for MSan

llvm-svn: 182382

compiler-rt/lib/asan/asan_blacklist.txt

@@ -3,7 +3,7 @@
 # at compile-time using -fsanitize-blacklist=<path> flag.
 
 # Example usage:
-# fun:*_ZN4base6subtle*
+# fun:*bad_function_name*
 # src:file_with_tricky_code.cc
 # global:*global_with_bad_access_or_initialization*
 # global-init:*global_with_initialization_issues*

compiler-rt/lib/msan/CMakeLists.txt

@@ -30,6 +30,8 @@ if(CAN_TARGET_${arch})
   list(APPEND MSAN_RUNTIME_LIBRARIES clang_rt.msan-${arch})
 endif()
 
+add_compiler_rt_resource_file(msan_blacklist msan_blacklist.txt)
+
 if(LLVM_INCLUDE_TESTS)
   add_subdirectory(tests)
 endif()

compiler-rt/lib/msan/lit_tests/CMakeLists.txt

@@ -15,7 +15,8 @@ if(COMPILER_RT_CAN_EXECUTE_TESTS)
   # Run MSan tests only if we're sure we may produce working binaries.
   set(MSAN_TEST_DEPS
     ${SANITIZER_COMMON_LIT_TEST_DEPS}
-    ${MSAN_RUNTIME_LIBRARIES})
+    ${MSAN_RUNTIME_LIBRARIES}
+    msan_blacklist)
   set(MSAN_TEST_PARAMS
     msan_site_config=${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
     )

compiler-rt/lib/msan/lit_tests/default_blacklist.cc

@@ -0,0 +1,3 @@
+// Test that MSan uses the default blacklist from resource directory.
+// RUN: %clangxx_msan -### %s 2>&1 | FileCheck %s
+// CHECK: fsanitize-blacklist={{.*}}msan_blacklist.txt

compiler-rt/lib/msan/msan_blacklist.txt

@@ -0,0 +1,7 @@
+# Blacklist for MemorySanitizer. Turns off instrumentation of particular
+# functions or sources. Use with care. You may set location of blacklist
+# at compile-time using -fsanitize-blacklist=<path> flag.
+
+# Example usage:
+# fun:*bad_function_name*
+# src:file_with_tricky_code.cc