- constify

[libfirm] / ir / ir / irmode.c

diff --git a/ir/ir/irmode.c b/ir/ir/irmode.c
index 08bca22..35924f6 100644 (file)
--- a/ir/ir/irmode.c
+++ b/ir/ir/irmode.c
@@ -483,7 +483,7 @@ tarval *get_mode_NAN(ir_mode *mode) {
        return get_tarval_nan(mode);
 }
 
-int is_mode(void *thing) {
+int is_mode(const void *thing) {
        if (get_kind(thing) == k_ir_mode)
                return 1;
        else