Index: lib/ExecutionEngine/Orc/OrcCBindingsStack.h
===================================================================
--- lib/ExecutionEngine/Orc/OrcCBindingsStack.h
+++ lib/ExecutionEngine/Orc/OrcCBindingsStack.h
@@ -381,7 +381,7 @@
   JITSymbol findSymbolIn(orc::VModuleKey K, const std::string &Name,
                          bool ExportedSymbolsOnly) {
     assert(KeyLayers.count(K) && "looking up symbol in unknown module");
-    return KeyLayers[K]->findSymbolIn(K, Name, ExportedSymbolsOnly);
+    return KeyLayers[K]->findSymbolIn(K, mangle(Name), ExportedSymbolsOnly);
   }
 
   LLVMOrcErrorCode findSymbolAddress(JITTargetAddress &RetAddr,