gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_

[gnulib.git] / m4 / gnulib-common.m4

diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index 75da53d..63c6300 100644 (file)
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -23,14 +23,17 @@ AC_DEFUN([gl_COMMON_BODY], [
 # define __GNUC_STDC_INLINE__ 1
 #endif])
   AH_VERBATIM([unused_parameter],
-[/* Define as a marker that can be attached to function parameter declarations
-   for parameters that are not used.  This helps to reduce warnings, such as
-   from GCC -Wunused-parameter.  */
+[/* Define as a marker that can be attached to declarations that might not
+    be used.  This helps to reduce warnings, such as from
+    GCC -Wunused-parameter.  */
 #if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
-# define _UNUSED_PARAMETER_ __attribute__ ((__unused__))
+# define _GL_UNUSED __attribute__ ((__unused__))
 #else
-# define _UNUSED_PARAMETER_
+# define _GL_UNUSED
 #endif
+/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name
+   is a misnomer outside of parameter lists.  */
+#define _UNUSED_PARAMETER_ _GL_UNUSED
 ])
 ])