@@ -21676,9 +21676,11 @@ get_partial_spec_bindings (tree tmpl, tree spec_tmpl, tree args)
`T' is `A' but unify () does not check whether `typename T::X'
is `int'. */
spec_args = tsubst (spec_args, deduced_args, tf_none, NULL_TREE);
- spec_args = coerce_template_parms (DECL_INNERMOST_TEMPLATE_PARMS (tmpl),
- spec_args, tmpl,
- tf_none, false, false);
+
+ if (spec_args != error_mark_node)
+ spec_args = coerce_template_parms (DECL_INNERMOST_TEMPLATE_PARMS (tmpl),
+ INNERMOST_TEMPLATE_ARGS (spec_args),
+ tmpl, tf_none, false, false);
pop_tinst_level ();
new file mode 100644
@@ -0,0 +1,28 @@
+// PR c++/80174
+
+typedef unsigned char uint8_t;
+
+template <typename T>
+struct HighestMaxFieldIdx {
+ static const uint8_t maxFieldIdx = T::fieldIdx;
+};
+
+template <typename This>
+struct Outer {
+
+ template <uint8_t _fieldIdx, typename T, T This::*field>
+ struct Varint {};
+
+
+ template <uint8_t _fieldIdx, uint8_t This::*field>
+ struct Varint<_fieldIdx, uint8_t, field> {
+ static const uint8_t fieldIdx = _fieldIdx;
+ };
+};
+
+struct Msg {
+ uint8_t a;
+
+ static const uint8_t t
+ = HighestMaxFieldIdx<Outer<Msg>::Varint<1, uint8_t, &Msg::a> >::maxFieldIdx;
+};