Index: src/ResolvExpr/CommonType.cc
===================================================================
--- src/ResolvExpr/CommonType.cc	(revision 668e971a4b0566f4b96f071a18a0a01df07df822)
+++ src/ResolvExpr/CommonType.cc	(revision 57f408ebfa7e276870a937eea1a8be092c0af69b)
@@ -243,4 +243,7 @@
 					result->get_qualifiers() += zeroType->get_qualifiers();
 				}
+			} else if ( widenSecond && dynamic_cast< OneType* >( type2 ) ) {
+				result = new BasicType( zeroType->get_qualifiers(), BasicType::SignedInt );
+				result->get_qualifiers() += type2->get_qualifiers();
 			}
 		}
@@ -254,4 +257,7 @@
 					result->get_qualifiers() += oneType->get_qualifiers();
 				}
+			} else if ( widenSecond && dynamic_cast< ZeroType* >( type2 ) ) {
+				result = new BasicType( oneType->get_qualifiers(), BasicType::SignedInt );
+				result->get_qualifiers() += type2->get_qualifiers();
 			}
 		}