[gcc r14-2307] libstdc++: Disable std::forward_list tests for C++98 mode

[gcc r14-2307] libstdc++: Disable std::forward_list tests for C++98 mode

[Jonathan Wakely]

https://gcc.gnu.org/g:cd9964b7e2311209ffaa00b322b31c67d64ca83d

commit r14-2307-gcd9964b7e2311209ffaa00b322b31c67d64ca83d
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Jul 4 23:41:50 2023 +0100

    libstdc++: Disable std::forward_list tests for C++98 mode
    
    These tests fail with -std=gnu++98/-D_GLIBCXX_DEBUG in the runtest
    flags. They should require the c++11 effective target.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/23_containers/forward_list/debug/iterator1_neg.cc:
            Skip as UNSUPPORTED for C++98 mode.
            * testsuite/23_containers/forward_list/debug/iterator3_neg.cc:
            Likewise.

Diff:
---
 .../testsuite/23_containers/forward_list/debug/iterator1_neg.cc         | 2 +-
 .../testsuite/23_containers/forward_list/debug/iterator3_neg.cc         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator1_neg.cc b/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator1_neg.cc
index a0e05413896..59a22f7ec89 100644
--- a/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator1_neg.cc
+++ b/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator1_neg.cc
@@ -15,7 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 //
-// { dg-do run { xfail *-*-* } }
+// { dg-do run { target c++11 xfail *-*-* } }
 // { dg-require-debug-mode "" }
 
 #include <forward_list>
diff --git a/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator3_neg.cc b/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator3_neg.cc
index bfa281ad9f4..0c4439f46ed 100644
--- a/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator3_neg.cc
+++ b/libstdc++-v3/testsuite/23_containers/forward_list/debug/iterator3_neg.cc
@@ -15,7 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 //
-// { dg-do run { xfail *-*-* } }
+// { dg-do run { target c++11 xfail *-*-* } }
 // { dg-require-debug-mode "" }
 
 #include <forward_list>