Introduce DISABLE_ASAN macro to disable AddressSanitizer instrumentation for given functions.

Disable AddressSanitizer instrumentation for StackTracer::Trace.

R=danno@chromium.org
BUG=chromium:134722

Review URL: https://chromiumcodereview.appspot.com/10834430

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12361 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/globals.h

@@ -360,6 +360,20 @@ F FUNCTION_CAST(Address addr) {
 #define MUST_USE_RESULT
 #endif
 
+
+// Define DISABLE_ASAN macros.
+#if defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define DISABLE_ASAN __attribute__((no_address_safety_analysis))
+#endif
+#endif
+
+
+#ifndef DISABLE_ASAN
+#define DISABLE_ASAN
+#endif
+
+
 // -----------------------------------------------------------------------------
 // Forward declarations for frequently used classes
 // (sorted alphabetically)

src/log.cc

@@ -145,7 +145,7 @@ class Profiler: public Thread {
 //
 // StackTracer implementation
 //
-void StackTracer::Trace(Isolate* isolate, TickSample* sample) {
+DISABLE_ASAN void StackTracer::Trace(Isolate* isolate, TickSample* sample) {
   ASSERT(isolate->IsInitialized());
 
   // Avoid collecting traces while doing GC.