1 files changed, 12 insertions, 7 deletions
diff --git a/tests/signed-nan.h b/tests/signed-nan.h
index cae6c5d5..41360db5 100644
--- a/tests/signed-nan.h
+++ b/tests/signed-nan.h
@@ -1,5 +1,5 @@
 /* Macros for quiet not-a-number.
-   Copyright (C) 2023-2024 Free Software Foundation, Inc.
+   Copyright (C) 2023-2025 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
@@ -17,6 +17,11 @@
 #ifndef _SIGNED_NAN_H
 #define _SIGNED_NAN_H
 
+/* This file uses _GL_UNUSED.  */
+#if !_GL_CONFIG_H_INCLUDED
+ #error "Please include config.h first."
+#endif
+
 #include <math.h>
 
 #include "nan.h"
@@ -48,7 +53,7 @@ _GL_UNUSED static float
 positive_NaNf ()
 {
   /* 'volatile' works around a GCC bug:
-     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111655>  */
+     <https://gcc.gnu.org/PR111655>  */
   float volatile nan = NaNf ();
   return (signbit (nan) ? minus_NaNf (nan) : nan);
 }
@@ -58,7 +63,7 @@ _GL_UNUSED static float
 negative_NaNf ()
 {
   /* 'volatile' works around a GCC bug:
-     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111655>  */
+     <https://gcc.gnu.org/PR111655>  */
   float volatile nan = NaNf ();
   return (signbit (nan) ? nan : minus_NaNf (nan));
 }
@@ -86,7 +91,7 @@ _GL_UNUSED static double
 positive_NaNd ()
 {
   /* 'volatile' works around a GCC bug:
-     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111655>  */
+     <https://gcc.gnu.org/PR111655>  */
   double volatile nan = NaNd ();
   return (signbit (nan) ? minus_NaNd (nan) : nan);
 }
@@ -96,7 +101,7 @@ _GL_UNUSED static double
 negative_NaNd ()
 {
   /* 'volatile' works around a GCC bug:
-     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111655>  */
+     <https://gcc.gnu.org/PR111655>  */
   double volatile nan = NaNd ();
   return (signbit (nan) ? nan : minus_NaNd (nan));
 }
@@ -115,7 +120,7 @@ _GL_UNUSED static long double
 positive_NaNl ()
 {
   /* 'volatile' works around a GCC bug:
-     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111655>  */
+     <https://gcc.gnu.org/PR111655>  */
   long double volatile nan = NaNl ();
   return (signbit (nan) ? minus_NaNl (nan) : nan);
 }
@@ -125,7 +130,7 @@ _GL_UNUSED static long double
 negative_NaNl ()
 {
   /* 'volatile' works around a GCC bug:
-     <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111655>  */
+     <https://gcc.gnu.org/PR111655>  */
   long double volatile nan = NaNl ();
   return (signbit (nan) ? nan : minus_NaNl (nan));
 }