[compiler-rt] r192576 - tsan: allow to override OnPrint() callback in Go runtime

[Dmitry Vyukov]

Author: dvyukov
Date: Mon Oct 14 04:52:40 2013
New Revision: 192576

URL: http://llvm.org/viewvc/llvm-project?rev=192576&view=rev
Log:
tsan: allow to override OnPrint() callback in Go runtime


Modified:
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_printf.cc

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_printf.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_printf.cc?rev=192576&r1=192575&r2=192576&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_printf.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_printf.cc Mon Oct 14 04:52:40 2013
@@ -195,17 +195,22 @@ void SetPrintfAndReportCallback(void (*c
   PrintfAndReportCallback = callback;
 }
 
-#if SANITIZER_SUPPORTS_WEAK_HOOKS
 // Can be overriden in frontend.
+#if SANITIZER_SUPPORTS_WEAK_HOOKS
 SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+void OnPrint(const char *str) {
+  (void)str;
+}
+#elif defined(SANITIZER_GO) && defined(TSAN_EXTERNAL_HOOKS)
 void OnPrint(const char *str);
+#else
+void OnPrint(const char *str) {
+  (void)str;
+}
 #endif
 
 static void CallPrintfAndReportCallback(const char *str) {
-#if SANITIZER_SUPPORTS_WEAK_HOOKS
-  if (&OnPrint != NULL)
-    OnPrint(str);
-#endif
+  OnPrint(str);
   if (PrintfAndReportCallback)
     PrintfAndReportCallback(str);
 }