[committed] libstdc++: Add { target c++98_only } to tests

[Jonathan Wakely <jwakely@redhat.com>]

Tested x86_64-linux. Pushed to trunk.

-- >8 --

These test behaviour only seen with -std=c++03 so the target selector
should match.

libstdc++-v3/ChangeLog:

	* testsuite/20_util/bitset/107037.cc: Add c++98_only selector.
	* testsuite/26_numerics/complex/56111.cc: Likewise.
---
 libstdc++-v3/testsuite/20_util/bitset/107037.cc     | 2 +-
 libstdc++-v3/testsuite/26_numerics/complex/56111.cc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/testsuite/20_util/bitset/107037.cc b/libstdc++-v3/testsuite/20_util/bitset/107037.cc
index b4560dd3775..3b2bb80277e 100644
--- a/libstdc++-v3/testsuite/20_util/bitset/107037.cc
+++ b/libstdc++-v3/testsuite/20_util/bitset/107037.cc
@@ -1,5 +1,5 @@
 // { dg-options "-std=c++03" }
-// { dg-do compile }
+// { dg-do compile { target c++98_only } }
 // PR libstdc++/107037 bitset::_M_do_reset fails for strict -std=c++03 mode
 #include <bitset>
 template class std::bitset<0>;
diff --git a/libstdc++-v3/testsuite/26_numerics/complex/56111.cc b/libstdc++-v3/testsuite/26_numerics/complex/56111.cc
index e583b190ee1..0237ed356e1 100644
--- a/libstdc++-v3/testsuite/26_numerics/complex/56111.cc
+++ b/libstdc++-v3/testsuite/26_numerics/complex/56111.cc
@@ -1,5 +1,5 @@
-// { dg-do compile }
 // { dg-options "-std=c++98" }
+// { dg-do compile { target c++98_only } }
 
 // Copyright (C) 2013-2023 Free Software Foundation, Inc.
 //
-- 
2.41.0