gcc/cp/ChangeLog:
PR c++/69283
PR c++/67835
* decl2.c (mark_used): When given a TEMPLATE_DECL, return after
setting its TREE_USED flag.
gcc/testsuite/ChangeLog:
PR c++/69283
PR c++/67835
* g++.dg/cpp1y/auto-fn29.C: New test.
* g++.dg/cpp1y/auto-fn30.C: New test.
From-SVN: r233230
+2016-02-08 Patrick Palka <ppalka@gcc.gnu.org>
+
+ PR c++/69283
+ PR c++/67835
+ * decl2.c (mark_used): When given a TEMPLATE_DECL, return after
+ setting its TREE_USED flag.
+
2016-02-08 Jason Merrill <jason@redhat.com>
PR c++/69657
/* Set TREE_USED for the benefit of -Wunused. */
TREE_USED (decl) = 1;
+
+ if (TREE_CODE (decl) == TEMPLATE_DECL)
+ return true;
+
if (DECL_CLONED_FUNCTION_P (decl))
TREE_USED (DECL_CLONED_FUNCTION (decl)) = 1;
+2016-02-08 Patrick Palka <ppalka@gcc.gnu.org>
+
+ PR c++/69283
+ PR c++/67835
+ * g++.dg/cpp1y/auto-fn29.C: New test.
+ * g++.dg/cpp1y/auto-fn30.C: New test.
+
2016-02-08 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/69209
--- /dev/null
+// PR c++/69283
+// { dg-do compile { target c++14 } }
+
+namespace Ape {
+ struct Type {};
+
+ template <typename T>
+ auto f1(T const& v){
+ return true;
+ }
+
+ template <typename T>
+ auto f2(T const& v){
+ return f2(v); // { dg-error "auto" }
+ }
+}
+
+namespace Baboon {
+ template <typename T>
+ bool f3(T const& v){
+ return f1(v);
+ }
+
+ template <typename T>
+ bool f4(T const& v){
+ f2(v);
+ }
+}
+
+int main(){
+ Ape::Type x;
+ Baboon::f3(x);
+ Baboon::f4(x);
+}
--- /dev/null
+// PR c++/67835
+// { dg-do compile { target c++14 } }
+
+template<class Tag, class T>
+auto g(Tag tag, T x) {
+ return f(tag, x);
+}
+
+namespace abc {
+struct tag {};
+
+struct A {};
+
+template<class T>
+auto f(tag, T x) { return x; }
+}
+
+int main() {
+ g(abc::tag(), abc::A());
+ return 0;
+}