if (dependent_scope_p (scope))
{
- if (is_template)
- expr = build_min_nt_loc (loc, TEMPLATE_ID_EXPR, expr, template_args);
- tree r = build_qualified_name (NULL_TREE, scope, expr,
- QUALIFIED_NAME_IS_TEMPLATE (qualified_id));
- REF_PARENTHESIZED_P (r) = REF_PARENTHESIZED_P (qualified_id);
- return r;
+ if (TREE_CODE (expr) == SCOPE_REF)
+ /* We built one in tsubst_baselink. */
+ gcc_checking_assert (same_type_p (scope, TREE_OPERAND (expr, 0)));
+ else
+ {
+ if (is_template)
+ expr = build_min_nt_loc (loc, TEMPLATE_ID_EXPR, expr,
+ template_args);
+ expr = build_qualified_name (NULL_TREE, scope, expr,
+ QUALIFIED_NAME_IS_TEMPLATE
+ (qualified_id));
+ }
+ REF_PARENTHESIZED_P (expr) = REF_PARENTHESIZED_P (qualified_id);
+ return expr;
}
if (!BASELINK_P (name) && !DECL_P (expr))
{
if (DECL_P (TREE_OPERAND (t, 1))
&& CLASS_TYPE_P (TREE_OPERAND (t, 0))
+ && !dependent_scope_p (TREE_OPERAND (t, 0))
&& !unknown_base_ref_p (t)
&& accessible_in_template_p (TREE_OPERAND (t, 0),
TREE_OPERAND (t, 1)))
--- /dev/null
+// PR c++/103943
+// { dg-do compile { target c++17 } }
+
+template<typename R, typename...AA> struct F0 { //OK
+ R(*fun_ptr)(AA...);
+};
+template<typename R, typename...AA> struct F1 { //OK
+ R(*fun_ptr)(AA...);
+ F1(R(*fun_ptr)(AA...)) : fun_ptr(fun_ptr) {}
+};
+template<typename R, typename...AA> struct F2 { //OK
+ R(*fun_ptr)(AA...);
+ using fun_ptr_t = decltype(fun_ptr);
+ F2(fun_ptr_t fun_ptr) : fun_ptr(fun_ptr) {}
+};
+template<typename R, typename...AA> struct F3 {
+ R(*fun_ptr)(AA...);
+// using fun_ptr_t = decltype(fun_ptr); //OK as in F2
+ using fun_ptr_t = decltype(F3::fun_ptr); //ICE: Segmentation fault
+// using fun_ptr_t = decltype(F3<R, AA...>::fun_ptr); //ICE: Segmentation fault
+ F3(fun_ptr_t fun_ptr) : fun_ptr(fun_ptr) {}
+};
+template<typename R, typename...AA> struct F4 {
+ static R fun_not_implemented(AA...);
+// using fun_ptr_t = decltype(&fun_not_implemented); //OK
+ using fun_ptr_t = decltype(&F4::fun_not_implemented); //OK with aggregate initialization (no ctor)
+// using fun_ptr_t = decltype(&F4<R, AA...>::fun_not_implemented); //OK with aggregate initialization (no ctor)
+ fun_ptr_t fun_ptr;
+};
+template<typename R, typename...AA> struct F5 { //OK
+ static R fun_not_implemented(AA...);
+ using fun_ptr_t = decltype(&fun_not_implemented);
+ fun_ptr_t fun_ptr;
+ F5(fun_ptr_t fun_ptr) : fun_ptr(fun_ptr) {}
+};
+template<typename R, typename...AA> struct F6 {
+ static R fun_not_implemented(AA...);
+// using fun_ptr_t = decltype(&fun_not_implemented); //OK as in F5
+ using fun_ptr_t = decltype(&F6::fun_not_implemented); //ICE: in build_qualified_name, at cp/tree.c:2238
+// using fun_ptr_t = decltype(&F6<R, AA...>::fun_not_implemented); //ICE: in build_qualified_name, at cp/tree.c:2238
+ fun_ptr_t fun_ptr;
+ F6(fun_ptr_t fun_ptr) : fun_ptr(fun_ptr) {}
+};
+template<typename R, typename...AA> F0(R(*fun_ptr)(AA...)) -> F0<R, AA...>;
+template<typename R, typename...AA> F1(R(*fun_ptr)(AA...)) -> F1<R, AA...>;
+template<typename R, typename...AA> F2(R(*fun_ptr)(AA...)) -> F2<R, AA...>;
+template<typename R, typename...AA> F3(R(*fun_ptr)(AA...)) -> F3<R, AA...>;
+template<typename R, typename...AA> F4(R(*fun_ptr)(AA...)) -> F4<R, AA...>;
+template<typename R, typename...AA> F5(R(*fun_ptr)(AA...)) -> F5<R, AA...>;
+template<typename R, typename...AA> F6(R(*fun_ptr)(AA...)) -> F6<R, AA...>;
+
+int fun(int a) {
+ return a + 1;
+}
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+void test() {
+ auto f0 = F0{&fun}; //OK
+ auto f1 = F1{&fun}; //OK
+ auto f2 = F2{&fun}; //OK
+ auto f3 = F3{&fun}; //ICE: Segmentation fault
+ auto f4 = F4{&fun}; //OK
+ auto f5 = F5{&fun}; //OK
+ auto f6 = F6{&fun}; //ICE: in build_qualified_name, at cp/tree.c:2238
+}