On Thu, May 04, 2017 at 02:13:24PM +0200, Richard Biener wrote:
On Thu, May 4, 2017 at 2:11 PM, Marek Polacek <polacek@redhat.com> wrote:
On Thu, May 04, 2017 at 12:42:03PM +0200, Richard Biener wrote:
+static tree
+unwrap_c_maybe_const (tree *tp, int *walk_subtrees, void *)
+{
+ if (TREE_CODE (*tp) == C_MAYBE_CONST_EXPR)
+ {
+ *tp = C_MAYBE_CONST_EXPR_EXPR (*tp);
+ /* C_MAYBE_CONST_EXPRs don't nest. */
+ *walk_subtrees = false;
This changes trees in-place -- do you need to operate on a copy?
Ugh, yes. But I can't simply copy_node, because that creates new VAR_DECLs,
and operand_equal_p would consider them unequal. Hmm... We need something
else.
unshare_expr?
Yeah, so:
2017-05-04 Marek Polacek <polacek@redhat.com>
PR c/80525
* c-warn.c (unwrap_c_maybe_const): New.
(warn_logical_operator): Call it.
* c-c++-common/Wlogical-op-1.c: Don't use -fwrapv anymore.
* c-c++-common/Wlogical-op-2.c: New test.