[gcc r14-3652] libstdc++: Add explicit -std=gnu++98 to tests that use { target c++98_only }

[Jonathan Wakely]

https://gcc.gnu.org/g:0eb35092de0e55d323bd0b17c6bb28e0734dda02

commit r14-3652-g0eb35092de0e55d323bd0b17c6bb28e0734dda02
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Sep 1 21:20:55 2023 +0100

    libstdc++: Add explicit -std=gnu++98 to tests that use { target c++98_only }
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/23_containers/deque/requirements/explicit_instantiation/2.cc:
            Add dg-options to restrict the test to C++98 mode.
            * testsuite/23_containers/list/requirements/explicit_instantiation/2.cc:
            Likewise.

Diff:
---
 .../23_containers/deque/requirements/explicit_instantiation/2.cc         | 1 +
 .../23_containers/list/requirements/explicit_instantiation/2.cc          | 1 +
 2 files changed, 2 insertions(+)

diff --git a/libstdc++-v3/testsuite/23_containers/deque/requirements/explicit_instantiation/2.cc b/libstdc++-v3/testsuite/23_containers/deque/requirements/explicit_instantiation/2.cc
index 3afa9fb4403f..6e6ceabad21f 100644
--- a/libstdc++-v3/testsuite/23_containers/deque/requirements/explicit_instantiation/2.cc
+++ b/libstdc++-v3/testsuite/23_containers/deque/requirements/explicit_instantiation/2.cc
@@ -21,6 +21,7 @@
 #include <deque>
 #include <testsuite_api.h>
 
+// { dg-options "-std=gnu++98" }
 // { dg-do compile { target c++98_only } }
 
 // N.B. Since C++11 we cannot instantiate with T == NonDefaultConstructible
diff --git a/libstdc++-v3/testsuite/23_containers/list/requirements/explicit_instantiation/2.cc b/libstdc++-v3/testsuite/23_containers/list/requirements/explicit_instantiation/2.cc
index b8f393983b1f..463ec507bd94 100644
--- a/libstdc++-v3/testsuite/23_containers/list/requirements/explicit_instantiation/2.cc
+++ b/libstdc++-v3/testsuite/23_containers/list/requirements/explicit_instantiation/2.cc
@@ -21,6 +21,7 @@
 #include <list>
 #include <testsuite_api.h>
 
+// { dg-options "-std=gnu++98" }
 // { dg-do compile { target c++98_only } }
 
 // N.B. Since C++11 we cannot instantiate with T == NonDefaultConstructible