r309499 - CodeGenModule.cpp: [PR33810][Modules] Make sure actual memory corruption before random crash with -fmodules.

[NAKAMURA Takumi via cfe-commits]

Author: chapuni
Date: Sat Jul 29 21:08:23 2017
New Revision: 309499

URL: http://llvm.org/viewvc/llvm-project?rev=309499&view=rev
Log:
CodeGenModule.cpp: [PR33810][Modules] Make sure actual memory corruption before random crash with -fmodules.

Modified:
    cfe/trunk/lib/CodeGen/CodeGenModule.cpp

Modified: cfe/trunk/lib/CodeGen/CodeGenModule.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenModule.cpp?rev=309499&r1=309498&r2=309499&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenModule.cpp (original)
+++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp Sat Jul 29 21:08:23 2017
@@ -745,6 +745,8 @@ StringRef CodeGenModule::getMangledName(
 
   // Keep the first result in the case of a mangling collision.
   auto Result = Manglings.insert(std::make_pair(Str, GD));
+  assert(&FoundStr == &MangledDeclNames[CanonicalGD] && "FoundStr is invalidated!");
+  assert(FoundStr.empty() && "FoundStr is not empty!");
   return FoundStr = Result.first->first();
 }