Index: src/SymTab/Mangler.cc
===================================================================
--- src/SymTab/Mangler.cc	(revision 33a25f904db2c5a826a55cdb66cfd7d4cc979de3)
+++ src/SymTab/Mangler.cc	(revision 764e0096dae80880e39f31ccca82410d8fec839f)
@@ -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() ) {