[committed] libstdc++: Add dg-output to two tests

[Jonathan Wakely]

Tested x86_64-linux. Pushed to trunk.

-- >8 --

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.
---
 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()
 {
-- 
2.43.0