[gcc r13-8158] libstdc++: Add dg-output to two tests

[Jonathan Wakely <redi@gcc.gnu.org>]

https://gcc.gnu.org/g:2316fe2790416635d7dfc994ae4ef97280c9da89

commit r13-8158-g2316fe2790416635d7dfc994ae4ef97280c9da89
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Dec 11 22:58:46 2023 +0000

    libstdc++: Add dg-output to two tests
    
    These tests are expected to run interactively, with the output checked
    by eye. Nobody ever does that, but we can at least use dg-output to
    check that the output is as expected.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/27_io/objects/char/2.cc: Use dg-output.
            * testsuite/27_io/objects/wchar_t/2.cc: Use dg-output.
    
    (cherry picked from commit 0c773209fc9d0b5fa04f4055bdc2ff9746a1999d)

Diff:
---
 libstdc++-v3/testsuite/27_io/objects/char/2.cc    | 2 ++
 libstdc++-v3/testsuite/27_io/objects/wchar_t/2.cc | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/libstdc++-v3/testsuite/27_io/objects/char/2.cc b/libstdc++-v3/testsuite/27_io/objects/char/2.cc
index b6c49bac6f3..9026a3cbad8 100644
--- a/libstdc++-v3/testsuite/27_io/objects/char/2.cc
+++ b/libstdc++-v3/testsuite/27_io/objects/char/2.cc
@@ -38,6 +38,8 @@ void test04()
   cout.flush();
 }
 
+// { dg-output "hello fine world" }
+
 int 
 main()
 {
diff --git a/libstdc++-v3/testsuite/27_io/objects/wchar_t/2.cc b/libstdc++-v3/testsuite/27_io/objects/wchar_t/2.cc
index 52a21b8dc22..2e47aba7c3c 100644
--- a/libstdc++-v3/testsuite/27_io/objects/wchar_t/2.cc
+++ b/libstdc++-v3/testsuite/27_io/objects/wchar_t/2.cc
@@ -38,6 +38,8 @@ void test04()
   wcout.flush();
 }
 
+// { dg-output "hello fine world" }
+
 int 
 main()
 {