commit 5361caf55040d2a15b5ebb5ff0fc1e3e605dba9c
Author: Jason Merrill <jason@redhat.com>
Date: Thu Dec 17 00:10:20 2015 -0500
PR c++/67576
PR c++/25466
* rtti.c (build_typeid): Use save_expr, not stabilize_reference.
@@ -332,7 +332,7 @@ build_typeid (tree exp, tsubst_flags_t complain)
/* So we need to look into the vtable of the type of exp.
Make sure it isn't a null lvalue. */
exp = cp_build_addr_expr (exp, complain);
- exp = stabilize_reference (exp);
+ exp = save_expr (exp);
cond = cp_convert (boolean_type_node, exp, complain);
exp = cp_build_indirect_ref (exp, RO_NULL, complain);
}
new file mode 100644
@@ -0,0 +1,16 @@
+// { dg-do run }
+
+#include <typeinfo>
+
+struct Base { virtual void foo() {} }; // polymorphic
+
+int main()
+{
+ Base b;
+ Base *ary[] = { &b, &b, &b};
+
+ int iter = 0;
+ typeid(*ary[iter++]);
+ if (iter != 1) // should be 1
+ __builtin_abort(); // but 2
+}