Index: src/SymTab/Mangler.cc
===================================================================
--- src/SymTab/Mangler.cc	(revision 522363e8799469eb8e37c765e3c5d28f46066d9a)
+++ src/SymTab/Mangler.cc	(revision 1dcd955480c332b81ce157f2b7ccf8e34ad2acd3)
@@ -307,4 +307,7 @@
 			mangleName << "V";
 		} // if
+		if ( type->get_mutex() ) {
+			mangleName << "M";
+		} // if
 		// Removed due to restrict not affecting function compatibility in GCC
 //		if ( type->get_isRestrict() ) {