- fixed warning

[r24680]

diff --git a/ir/opt/combo.c b/ir/opt/combo.c
index 1ab9371..a2f8ee9 100644 (file)
--- a/ir/opt/combo.c
+++ b/ir/opt/combo.c
@@ -300,7 +300,7 @@ static void check_opcode(const partition_t *Z) {
                        }
                        first = 0;
                } else {
-                       assert(key.code  == get_irn_opcode(irn));
+                       assert((unsigned)key.code  == get_irn_opcode(irn));
                        assert(key.mode  == get_irn_mode(irn));
                        assert(key.arity == get_irn_arity(irn));