https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68711
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-12-05
CC| |jason at redhat dot com
Ever confirmed|0 |1
Known to fail| |6.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I suspect this is caused by the merge of the C++ delayed folding branch in
r230365 (CC'ing Jason). The problem is in the function
build_class_member_access_expr(). The following otherwise untested change
restores the expected diagnostic:
--- gcc/cp/typeck.c (revision 231314)
+++ gcc/cp/typeck.c (working copy)
@@ -2358,8 +2358,14 @@
int type_quals;
tree member_type;
- null_object_p = (INDIRECT_REF_P (object)
- && integer_zerop (TREE_OPERAND (object, 0)));
+ if (INDIRECT_REF_P (object))
+ {
+ tree oper = TREE_OPERAND (object, 0);
+ STRIP_NOPS (oper);
+ null_object_p = integer_zerop (oper);
+ }
+ else
+ null_object_p = false;
/* Convert OBJECT to the type of MEMBER. */
if (!same_type_p (TYPE_MAIN_VARIANT (object_type),
