Index: src/SymTab/Mangler.cc
===================================================================
--- src/SymTab/Mangler.cc	(revision 33a25f904db2c5a826a55cdb66cfd7d4cc979de3)
+++ src/SymTab/Mangler.cc	(revision 8f98b782aebdb59bd3ba7eae826ba604a978928a)
@@ -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() ) {