[compiler-rt] r209414 - [ASan/Win] Add a comment about DCL-using-static vs threads

[Timur Iskhodzhanov]

Author: timurrrr
Date: Thu May 22 05:24:48 2014
New Revision: 209414

URL: http://llvm.org/viewvc/llvm-project?rev=209414&view=rev
Log:
[ASan/Win] Add a comment about DCL-using-static vs threads

Modified:
    compiler-rt/trunk/lib/asan/asan_dll_thunk.cc

Modified: compiler-rt/trunk/lib/asan/asan_dll_thunk.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/asan/asan_dll_thunk.cc?rev=209414&r1=209413&r2=209414&view=diff
==============================================================================
--- compiler-rt/trunk/lib/asan/asan_dll_thunk.cc (original)
+++ compiler-rt/trunk/lib/asan/asan_dll_thunk.cc Thu May 22 05:24:48 2014
@@ -170,6 +170,7 @@ extern "C" {
   void __asan_init_v3() {
     typedef void (*fntype)();
     static fntype fn = 0;
+    // __asan_init_v3 is expected to be called by only one thread.
     if (fn) return;
 
     fn = (fntype)getRealProcAddressOrDie("__asan_init_v3");