Index: testsuite/26_numerics/complex/cons/48760.cc
===================================================================
--- testsuite/26_numerics/complex/cons/48760.cc	(revision 174112)
+++ testsuite/26_numerics/complex/cons/48760.cc	(working copy)
@@ -1,3 +1,5 @@
+// { dg-require-c-std "" }
+
 // Copyright (C) 2011 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
Index: testsuite/26_numerics/complex/cons/48760_c++0x.cc
===================================================================
--- testsuite/26_numerics/complex/cons/48760_c++0x.cc	(revision 174112)
+++ testsuite/26_numerics/complex/cons/48760_c++0x.cc	(working copy)
@@ -1,4 +1,5 @@
 // { dg-options "-std=gnu++0x" }
+// { dg-require-c-std "" }
 
 // Copyright (C) 2011 Free Software Foundation, Inc.
 //
Index: testsuite/26_numerics/headers/cmath/19322.cc
===================================================================
--- testsuite/26_numerics/headers/cmath/19322.cc	(revision 174112)
+++ testsuite/26_numerics/headers/cmath/19322.cc	(working copy)
@@ -1,4 +1,6 @@
-// Copyright (C) 2005, 2009 Free Software Foundation, Inc.
+// { dg-require-c-std "" }
+
+// Copyright (C) 2005, 2009, 2010, 2011 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -15,11 +17,9 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-
 #include <cmath>
 #include <testsuite_hooks.h>
 
-#if _GLIBCXX_USE_C99_MATH
 // libstdc++/19322
 void test01()
 {
@@ -27,12 +27,9 @@
 
   VERIFY( !std::isnan(3.0) );
 }
-#endif
 
 int main()
 {
-#if _GLIBCXX_USE_C99_MATH
   test01();
-#endif
   return 0;
 }