Hi!
Working virtually out of Baker Island.
As the following testcase shows, I think we don't inherit template's
attributes into specializations.
Tested on x86_64-linux, ok for trunk?
2022-11-13 Jakub Jelinek <ja...@redhat.com>
* g++.dg/DRs/dr2604.C: New test.
--- gcc/testsuite/g++.dg/DRs/dr2604.C.jj 2022-11-13 23:39:45.725712300
-1200
+++ gcc/testsuite/g++.dg/DRs/dr2604.C 2022-11-13 23:39:38.712807673 -1200
@@ -0,0 +1,53 @@
+// DR 2604 - Attributes for an explicit specialization.
+// { dg-do compile { target c++11 } }
+// { dg-options "-Wunused-parameter" }
+
+template<typename>
+[[noreturn]] void
+foo ([[maybe_unused]] int i)
+{
+ for (;;);
+}
+
+template<>
+void
+foo<int> (int i) // { dg-warning "unused parameter 'i'" }
+{
+}
+
+template<typename>
+void
+bar (int i) // { dg-warning "unused parameter 'i'" }
+{
+}
+
+template<>
+[[noreturn]] void
+bar<int> ([[maybe_unused]] int i)
+{
+ for (;;);
+}
+
+[[noreturn]] void
+baz ()
+{
+ foo<long> (0);
+}
+
+[[noreturn]] void
+qux ()
+{
+ foo<int> (0);
+} // { dg-warning "'noreturn' function does return" }
+
+[[noreturn]] void
+garply ()
+{
+ bar<long> (0);
+} // { dg-warning "'noreturn' function does return" }
+
+[[noreturn]] void
+corge ()
+{
+ bar<int> (0);
+}
Jakub
