[gcc r13-5726] testsuite: Expect -Wdeprecated warning in warn/Wstrict-aliasing-bogus-union-2.C for C++23

[gcc r13-5726] testsuite: Expect -Wdeprecated warning in warn/Wstrict-aliasing-bogus-union-2.C for C++23

[Jakub Jelinek]

https://gcc.gnu.org/g:64b5ca4345f6a96a8b85b8aa1cfcc9cf667eadfd

commit r13-5726-g64b5ca4345f6a96a8b85b8aa1cfcc9cf667eadfd
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Feb 7 10:23:13 2023 +0100

    testsuite: Expect -Wdeprecated warning in warn/Wstrict-aliasing-bogus-union-2.C for C++23
    
    On Mon, Feb 06, 2023 at 02:26:01PM +0000, Jonathan Wakely via Gcc-patches wrote:
    > With the recent change to deprecate std::aligned_storage and
    > std::aligned_union we need to adjust some tests that now fail with
    > -std=c++23.
    
    The g++.dg/warn/Wstrict-aliasing-bogus-union-2.C test is also affected:
    PASS: g++.dg/warn/Wstrict-aliasing-bogus-union-2.C  -std=gnu++2b  (test for bogus messages, line 12)
    FAIL: g++.dg/warn/Wstrict-aliasing-bogus-union-2.C  -std=gnu++2b (test for excess errors)
    Excess errors:
    .../gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-union-2.C:8:8: warning: 'template<long unsigned int _Len, long unsigned int _Align> struct std::aligned_storage' is deprecated [-
    
    The following patch adds dg-warning for it.
    
    2023-02-07  Jakub Jelinek  <jakub@redhat.com>
    
            * g++.dg/warn/Wstrict-aliasing-bogus-union-2.C: Expect
            -Wdeprecated warning for C++23.

Diff:
---
 gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-union-2.C | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-union-2.C b/gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-union-2.C
index 2b4895aea97..e0a27e82b75 100644
--- a/gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-union-2.C
+++ b/gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-union-2.C
@@ -5,7 +5,7 @@
 
 struct foo
 {
-  std::aligned_storage<sizeof(long), alignof(long)>::type raw;
+  std::aligned_storage<sizeof(long), alignof(long)>::type raw;	/* { dg-warning "deprecated" "" { target c++23 } } */
 
   long& cooked()
     {