On 14/06/21 11:54 +0100, Jonathan Wakely wrote:
The no_unique_address attribute is not a reserved name until C++20, so
to use it in C++11/14/17 modes we should use the __no_unique_address_
form. We already use that form when using the attribute, but not in the
__has_cpp_attribute check.
libstdc++-v3/ChangeLog:
PR libstdc++/101055
* include/std/tuple: Use reserved form of attribute name.
* testsuite/17_intro/headers/c++2011/all_attributes.cc: Add
check for no_unique_address.
* testsuite/17_intro/headers/c++2014/all_attributes.cc:
Likewise.
* testsuite/17_intro/headers/c++2017/all_attributes.cc:
Likewise.
And this ensures the modified C++17 test doesn't fail when using a
newer -std option.
Tested powerpc64le-linux. Committed to trunk.
commit 45fb3d45a4d4b79a00c56fa93e9e69d9d7762ca0
Author: Jonathan Wakely <jwak...@redhat.com>
Date: Mon Jun 14 13:17:40 2021
libstdc++: Add explicit -std=gnu++17 option to test
This test has no -std option so when the testsuite is run with
-std=gnu++20 or later, this test will use that. The recent addition of
no_unique_address will cause it to FAIL, because that's a reserved word
after C++17. Add an explicit option, so that this test alays uses
exactly C++17.
libstdc++-v3/ChangeLog:
* testsuite/17_intro/headers/c++2017/all_attributes.cc: Add
-std=gnu++17 option.
diff --git a/libstdc++-v3/testsuite/17_intro/headers/c++2017/all_attributes.cc b/libstdc++-v3/testsuite/17_intro/headers/c++2017/all_attributes.cc
index 811b3fe3613..ea2c7d20ba2 100644
--- a/libstdc++-v3/testsuite/17_intro/headers/c++2017/all_attributes.cc
+++ b/libstdc++-v3/testsuite/17_intro/headers/c++2017/all_attributes.cc
@@ -15,6 +15,7 @@
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
+// { dg-options "-std=gnu++17" }
// { dg-do compile { target c++17 } }
// Ensure the library only uses the __name__ form for attributes.
