* [PATCH] c++: Add testcase for DR 2604
@ 2022-11-14 11:43 Jakub Jelinek
2022-11-14 23:12 ` Jason Merrill
0 siblings, 1 reply; 2+ messages in thread
From: Jakub Jelinek @ 2022-11-14 11:43 UTC (permalink / raw)
To: Jason Merrill; +Cc: gcc-patches
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 <jakub@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
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] c++: Add testcase for DR 2604
2022-11-14 11:43 [PATCH] c++: Add testcase for DR 2604 Jakub Jelinek
@ 2022-11-14 23:12 ` Jason Merrill
0 siblings, 0 replies; 2+ messages in thread
From: Jason Merrill @ 2022-11-14 23:12 UTC (permalink / raw)
To: Jakub Jelinek; +Cc: gcc-patches
On 11/14/22 01:43, Jakub Jelinek wrote:
> 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?
OK.
> 2022-11-13 Jakub Jelinek <jakub@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
>
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