commit 941058d18590e5c524ca97ad57f9ffdfcfec0469
Author: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat Nov 14 18:54:16 2015 +0000
PR bootstrap/68346
* call.c (build_new_op_1): Don't fold arguments to
warn_tautological_cmp.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230382 138bc75d-0d04-0410-961f-82ee72b054a4
@@ -5741,7 +5741,7 @@ build_new_op_1 (location_t loc, enum tree_code code, int flags, tree arg1,
maybe_warn_bool_compare (loc, code, fold (arg1),
fold (arg2));
if (complain & tf_warning && warn_tautological_compare)
- warn_tautological_cmp (loc, code, fold (arg1), fold (arg2));
+ warn_tautological_cmp (loc, code, arg1, arg2);
/* Fall through. */
case PLUS_EXPR:
case MINUS_EXPR:
new file mode 100644
@@ -0,0 +1,7 @@
+// PR bootstrap/68346
+// { dg-options -Wtautological-compare }
+
+bool f(unsigned u)
+{
+ return ((unsigned)(int)u == u);
+}