commit ce91c2a524880f727a114cc40e0ad94ac6755631
Author: Jason Merrill <jason@redhat.com>
Date: Tue Sep 4 15:20:32 2012 -0400
PR c++/54198
* decl.c (check_default_argument): Set cp_unevaluated_operand
around call to perform_implicit_conversion_flags.
@@ -10575,8 +10575,10 @@ check_default_argument (tree decl, tree arg)
A default argument expression is implicitly converted to the
parameter type. */
+ ++cp_unevaluated_operand;
perform_implicit_conversion_flags (decl_type, arg, tf_warning_or_error,
LOOKUP_NORMAL);
+ --cp_unevaluated_operand;
if (warn_zero_as_null_pointer_constant
&& c_inhibit_evaluation_warnings == 0
new file mode 100644
@@ -0,0 +1,19 @@
+// PR c++/54198
+
+template <typename T> void
+refIfNotNull (T* p1)
+{
+ p1->ref;
+}
+template <typename T> struct A
+{
+ A (T* p1)
+ {
+ refIfNotNull (p1);
+ }
+};
+class B;
+class C
+{
+ void getParent (A <B> = 0);
+};