Index: src/SymTab/Mangler.cc
===================================================================
--- src/SymTab/Mangler.cc	(revision 522363e8799469eb8e37c765e3c5d28f46066d9a)
+++ src/SymTab/Mangler.cc	(revision 310e5b7a73ac432e83f04a8d32b171a31ac8c68f)
@@ -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() ) {