These tests were backported from gcc-14 where the testsuite
automatically adds -std=gnu++20 as needed. That doesn't happen on the
older release branches, so an explicit dg-options directive is needed to
ensure the tests are run by default. Otherwise they'll only be run when
somebody uses a custom --target_board that includes -std=gnu++20.
For 23_containers/span/nodiscard.cc we need to remove the dg-warning
lines that only match for -std=gnu++23, because with the explicit
dg-options to set -std=gnu++20 we never actually test it with C++23
mode.
For 29_atomics/headers/stdatomic.h/115807.cc we need to compile with
-std=gnu++23 instead.
libstdc++-v3/ChangeLog:
* testsuite/20_util/integer_sequence/112473.cc: Compile with
-std=gnu++20.
* testsuite/21_strings/char_traits/requirements/113200.cc:
Likewise.
* testsuite/23_containers/array/comparison_operators/106212.cc:
Likewise.
* testsuite/23_containers/array/creation/115522.cc: Likewise.
* testsuite/23_containers/span/117966.cc: Likewise.
* testsuite/23_containers/span/nodiscard.cc: Likewise. Remove
dg-warning directives for et c++23.
* testsuite/23_containers/vector/cons/113841.cc: Compile with
-std=gnu++20.
* testsuite/24_iterators/common_iterator/101527.cc: Likewise.
* testsuite/24_iterators/counted_iterator/101527.cc: Likewise.
* testsuite/24_iterators/move_iterator/lwg3736.cc: Likewise.
* testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
Likewise.
* testsuite/27_io/filesystem/iterators/lwg3480.cc: Likewise.
* testsuite/29_atomics/headers/stdatomic.h/115807.cc: Compile
with -std=gnu++23.
* testsuite/experimental/scopeguard/114152.cc: Compile with
-std=gnu++20.
* testsuite/std/format/arguments/112607.cc: Likewise.
* testsuite/std/format/arguments/args_neg.cc: Likewise.
* testsuite/std/format/context.cc: Likewise.
* testsuite/std/format/formatter/112832.cc: Likewise.
* testsuite/std/format/formatter/basic.cc: Likewise.
* testsuite/std/ranges/subrange/111948.cc: Likewise.
* testsuite/std/ranges/subrange/lwg3589.cc: Likewise.
* testsuite/std/time/format/pr117085.cc: Likewise.
* testsuite/std/time/month/2.cc: Likewise.
* testsuite/std/time/time_zone/sys_info_abbrev.cc: Likewise.
* testsuite/std/time/tzdb/links.cc: Likewise.
* testsuite/std/time/weekday/2.cc: Likewise.
---
Tested x86_64-linux. Pushed to gcc-13.
libstdc++-v3/testsuite/20_util/integer_sequence/112473.cc | 1 +
.../21_strings/char_traits/requirements/113200.cc | 1 +
.../23_containers/array/comparison_operators/106212.cc | 2 +-
.../testsuite/23_containers/array/creation/115522.cc | 1 +
libstdc++-v3/testsuite/23_containers/span/117966.cc | 2 +-
libstdc++-v3/testsuite/23_containers/span/nodiscard.cc | 8 +-------
.../testsuite/23_containers/vector/cons/113841.cc | 1 +
.../testsuite/24_iterators/common_iterator/101527.cc | 1 +
.../testsuite/24_iterators/counted_iterator/101527.cc | 1 +
.../testsuite/24_iterators/move_iterator/lwg3736.cc | 1 +
.../lexicographical_compare_three_way/113960.cc | 1 +
.../testsuite/27_io/filesystem/iterators/lwg3480.cc | 1 +
.../testsuite/29_atomics/headers/stdatomic.h/115807.cc | 1 +
libstdc++-v3/testsuite/experimental/scopeguard/114152.cc | 1 +
libstdc++-v3/testsuite/std/format/arguments/112607.cc | 1 +
libstdc++-v3/testsuite/std/format/arguments/args_neg.cc | 1 +
libstdc++-v3/testsuite/std/format/context.cc | 1 +
libstdc++-v3/testsuite/std/format/formatter/112832.cc | 1 +
libstdc++-v3/testsuite/std/format/formatter/basic.cc | 1 +
libstdc++-v3/testsuite/std/ranges/subrange/111948.cc | 1 +
libstdc++-v3/testsuite/std/ranges/subrange/lwg3589.cc | 1 +
libstdc++-v3/testsuite/std/time/format/pr117085.cc | 1 +
libstdc++-v3/testsuite/std/time/month/2.cc | 1 +
.../testsuite/std/time/time_zone/sys_info_abbrev.cc | 1 +
libstdc++-v3/testsuite/std/time/tzdb/links.cc | 1 +
libstdc++-v3/testsuite/std/time/weekday/2.cc | 1 +
26 files changed, 26 insertions(+), 9 deletions(-)
diff --git a/libstdc++-v3/testsuite/20_util/integer_sequence/112473.cc
b/libstdc++-v3/testsuite/20_util/integer_sequence/112473.cc
index 14abfbc8149..1c8035c6b1e 100644
--- a/libstdc++-v3/testsuite/20_util/integer_sequence/112473.cc
+++ b/libstdc++-v3/testsuite/20_util/integer_sequence/112473.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// PR libstdc++/112473 - integer_sequence accepts non-integer types
diff --git
a/libstdc++-v3/testsuite/21_strings/char_traits/requirements/113200.cc
b/libstdc++-v3/testsuite/21_strings/char_traits/requirements/113200.cc
index 0fe765d53bc..6a1b03293ef 100644
--- a/libstdc++-v3/testsuite/21_strings/char_traits/requirements/113200.cc
+++ b/libstdc++-v3/testsuite/21_strings/char_traits/requirements/113200.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// PR libstdc++/113200
diff --git
a/libstdc++-v3/testsuite/23_containers/array/comparison_operators/106212.cc
b/libstdc++-v3/testsuite/23_containers/array/comparison_operators/106212.cc
index f7b12bd04ef..d6d9bf464b2 100644
--- a/libstdc++-v3/testsuite/23_containers/array/comparison_operators/106212.cc
+++ b/libstdc++-v3/testsuite/23_containers/array/comparison_operators/106212.cc
@@ -1,4 +1,4 @@
-// { dg-options "-D_GLIBCXX_DEBUG" }
+// { dg-options "-D_GLIBCXX_DEBUG -std=gnu++20" }
// { dg-do compile { target c++20 } }
// Bug libstdc++/106212 - Code becomes non-constexpr with _GLIBCXX_DEBUG
diff --git a/libstdc++-v3/testsuite/23_containers/array/creation/115522.cc
b/libstdc++-v3/testsuite/23_containers/array/creation/115522.cc
index 37073e002bd..052be9f7368 100644
--- a/libstdc++-v3/testsuite/23_containers/array/creation/115522.cc
+++ b/libstdc++-v3/testsuite/23_containers/array/creation/115522.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// PR libstdc++/115522 std::to_array no longer works for struct which is
diff --git a/libstdc++-v3/testsuite/23_containers/span/117966.cc
b/libstdc++-v3/testsuite/23_containers/span/117966.cc
index 8bbb5ca1e07..cf30fcadd8f 100644
--- a/libstdc++-v3/testsuite/23_containers/span/117966.cc
+++ b/libstdc++-v3/testsuite/23_containers/span/117966.cc
@@ -1,4 +1,4 @@
-// { dg-options "-D_GLIBCXX_DEBUG" }
+// { dg-options "-D_GLIBCXX_DEBUG -std=gnu++20" }
// { dg-do compile { target c++20 } }
// Bug 117966
diff --git a/libstdc++-v3/testsuite/23_containers/span/nodiscard.cc
b/libstdc++-v3/testsuite/23_containers/span/nodiscard.cc
index 3bccd1545c3..6bcdc096c71 100644
--- a/libstdc++-v3/testsuite/23_containers/span/nodiscard.cc
+++ b/libstdc++-v3/testsuite/23_containers/span/nodiscard.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
#include <span>
@@ -28,13 +29,6 @@ test_iterators(std::span<S> s)
s.end(); // { dg-warning "ignoring return value" }
s.rbegin(); // { dg-warning "ignoring return value" }
s.rend(); // { dg-warning "ignoring return value" }
-
-#if __cplusplus > 202002L
- s.cbegin(); // { dg-warning "ignoring return value" "" { target c++23 } }
- s.cend(); // { dg-warning "ignoring return value" "" { target c++23 } }
- s.crbegin(); // { dg-warning "ignoring return value" "" { target c++23 } }
- s.crend(); // { dg-warning "ignoring return value" "" { target c++23 } }
-#endif
}
void
diff --git a/libstdc++-v3/testsuite/23_containers/vector/cons/113841.cc
b/libstdc++-v3/testsuite/23_containers/vector/cons/113841.cc
index a7721d27f79..9c9c7d2d1c4 100644
--- a/libstdc++-v3/testsuite/23_containers/vector/cons/113841.cc
+++ b/libstdc++-v3/testsuite/23_containers/vector/cons/113841.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
#include <vector>
diff --git a/libstdc++-v3/testsuite/24_iterators/common_iterator/101527.cc
b/libstdc++-v3/testsuite/24_iterators/common_iterator/101527.cc
index 0a2a5e8dfcc..a2150aebd44 100644
--- a/libstdc++-v3/testsuite/24_iterators/common_iterator/101527.cc
+++ b/libstdc++-v3/testsuite/24_iterators/common_iterator/101527.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// PR libstdc++/101527
diff --git a/libstdc++-v3/testsuite/24_iterators/counted_iterator/101527.cc
b/libstdc++-v3/testsuite/24_iterators/counted_iterator/101527.cc
index 51c6e99cd77..5bdd410cc8e 100644
--- a/libstdc++-v3/testsuite/24_iterators/counted_iterator/101527.cc
+++ b/libstdc++-v3/testsuite/24_iterators/counted_iterator/101527.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// PR libstdc++/101527
diff --git a/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3736.cc
b/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3736.cc
index eaf791b3089..49fb686aa06 100644
--- a/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3736.cc
+++ b/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3736.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// 3736. move_iterator missing disable_sized_sentinel_for specialization
diff --git
a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc
b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc
index d51ae1a3d50..388a535b904 100644
---
a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc
+++
b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do run { target c++20 } }
// PR libstdc++/113960
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/iterators/lwg3480.cc
b/libstdc++-v3/testsuite/27_io/filesystem/iterators/lwg3480.cc
index 15e0286fff6..98e97a7775f 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/iterators/lwg3480.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/iterators/lwg3480.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// { dg-require-filesystem-ts "" }
diff --git a/libstdc++-v3/testsuite/29_atomics/headers/stdatomic.h/115807.cc
b/libstdc++-v3/testsuite/29_atomics/headers/stdatomic.h/115807.cc
index 14f320fe835..7f9d742838d 100644
--- a/libstdc++-v3/testsuite/29_atomics/headers/stdatomic.h/115807.cc
+++ b/libstdc++-v3/testsuite/29_atomics/headers/stdatomic.h/115807.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++23" }
// { dg-do compile { target c++23 } }
#include <stdatomic.h>
namespace other {
diff --git a/libstdc++-v3/testsuite/experimental/scopeguard/114152.cc
b/libstdc++-v3/testsuite/experimental/scopeguard/114152.cc
index 63c1f710e9f..e7837b718d2 100644
--- a/libstdc++-v3/testsuite/experimental/scopeguard/114152.cc
+++ b/libstdc++-v3/testsuite/experimental/scopeguard/114152.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// PR libstdc++/114152
diff --git a/libstdc++-v3/testsuite/std/format/arguments/112607.cc
b/libstdc++-v3/testsuite/std/format/arguments/112607.cc
index 19eec765ea5..8b53404ebd6 100644
--- a/libstdc++-v3/testsuite/std/format/arguments/112607.cc
+++ b/libstdc++-v3/testsuite/std/format/arguments/112607.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// PR libstdc++/112607
diff --git a/libstdc++-v3/testsuite/std/format/arguments/args_neg.cc
b/libstdc++-v3/testsuite/std/format/arguments/args_neg.cc
index 16ac3040146..8ffea99fdfb 100644
--- a/libstdc++-v3/testsuite/std/format/arguments/args_neg.cc
+++ b/libstdc++-v3/testsuite/std/format/arguments/args_neg.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// P2905R2 Runtime format strings
diff --git a/libstdc++-v3/testsuite/std/format/context.cc
b/libstdc++-v3/testsuite/std/format/context.cc
index 5cc5e9c9ba2..3b9029eb8d7 100644
--- a/libstdc++-v3/testsuite/std/format/context.cc
+++ b/libstdc++-v3/testsuite/std/format/context.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
#include <format>
diff --git a/libstdc++-v3/testsuite/std/format/formatter/112832.cc
b/libstdc++-v3/testsuite/std/format/formatter/112832.cc
index 9aa2095a73d..338b112d084 100644
--- a/libstdc++-v3/testsuite/std/format/formatter/112832.cc
+++ b/libstdc++-v3/testsuite/std/format/formatter/112832.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
#include <format>
diff --git a/libstdc++-v3/testsuite/std/format/formatter/basic.cc
b/libstdc++-v3/testsuite/std/format/formatter/basic.cc
index 56c18864135..642d4c8ccea 100644
--- a/libstdc++-v3/testsuite/std/format/formatter/basic.cc
+++ b/libstdc++-v3/testsuite/std/format/formatter/basic.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// BasicFormatter requirements do not require a const parameter.
diff --git a/libstdc++-v3/testsuite/std/ranges/subrange/111948.cc
b/libstdc++-v3/testsuite/std/ranges/subrange/111948.cc
index dcc64b56def..615bd94824a 100644
--- a/libstdc++-v3/testsuite/std/ranges/subrange/111948.cc
+++ b/libstdc++-v3/testsuite/std/ranges/subrange/111948.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
#include <ranges>
diff --git a/libstdc++-v3/testsuite/std/ranges/subrange/lwg3589.cc
b/libstdc++-v3/testsuite/std/ranges/subrange/lwg3589.cc
index 1ccc52d81f8..4447b3186eb 100644
--- a/libstdc++-v3/testsuite/std/ranges/subrange/lwg3589.cc
+++ b/libstdc++-v3/testsuite/std/ranges/subrange/lwg3589.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do compile { target c++20 } }
// LWG 3589. The const lvalue reference overload of get for subrange does not
diff --git a/libstdc++-v3/testsuite/std/time/format/pr117085.cc
b/libstdc++-v3/testsuite/std/time/format/pr117085.cc
index 99ef8389995..0fac91dd533 100644
--- a/libstdc++-v3/testsuite/std/time/format/pr117085.cc
+++ b/libstdc++-v3/testsuite/std/time/format/pr117085.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do run { target c++20 } }
// { dg-require-namedlocale "fr_FR.ISO8859-1" }
diff --git a/libstdc++-v3/testsuite/std/time/month/2.cc
b/libstdc++-v3/testsuite/std/time/month/2.cc
index 3bcefa60003..4ef0adfbce3 100644
--- a/libstdc++-v3/testsuite/std/time/month/2.cc
+++ b/libstdc++-v3/testsuite/std/time/month/2.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do run { target c++20 } }
// Class month [time.cal.month]
diff --git a/libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc
b/libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc
index f1a8fff02f5..d21bfacb97b 100644
--- a/libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc
+++ b/libstdc++-v3/testsuite/std/time/time_zone/sys_info_abbrev.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do run { target c++20 } }
// { dg-require-effective-target tzdb }
// { dg-require-effective-target cxx11_abi }
diff --git a/libstdc++-v3/testsuite/std/time/tzdb/links.cc
b/libstdc++-v3/testsuite/std/time/tzdb/links.cc
index 0ba214846c6..32834bf8a6a 100644
--- a/libstdc++-v3/testsuite/std/time/tzdb/links.cc
+++ b/libstdc++-v3/testsuite/std/time/tzdb/links.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do run { target c++20 } }
// { dg-require-effective-target tzdb }
// { dg-require-effective-target cxx11_abi }
diff --git a/libstdc++-v3/testsuite/std/time/weekday/2.cc
b/libstdc++-v3/testsuite/std/time/weekday/2.cc
index 924709321e5..6980f78fbe1 100644
--- a/libstdc++-v3/testsuite/std/time/weekday/2.cc
+++ b/libstdc++-v3/testsuite/std/time/weekday/2.cc
@@ -1,3 +1,4 @@
+// { dg-options "-std=gnu++20" }
// { dg-do run { target c++20 } }
// Class weekday [time.cal.wd]
--
2.49.0
