Index: src/SymTab/Mangler.cc
===================================================================
--- src/SymTab/Mangler.cc	(revision 60c3b06cd0b60317c7cc378a11ae1505498f55de)
+++ src/SymTab/Mangler.cc	(revision b4bfa0ab5ab42396bb6826d98b8e96d3027512cd)
@@ -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() ) {