X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Finttostr.h;h=4605145ab1be84048d8c9aef67a91c3775a5b9e9;hb=c1cd34b9fb71cfb44873aabe0957c24c234c4677;hp=aa5820fd5af33a0af04e82f646b5f62107d53447;hpb=57fdfd3f8ec62b105c53bcdf6f127c35c7fe7391;p=gnulib.git

diff --git a/lib/inttostr.h b/lib/inttostr.h
index aa5820fd5..4605145ab 100644
--- a/lib/inttostr.h
+++ b/lib/inttostr.h
@@ -1,7 +1,6 @@
 /* inttostr.h -- convert integers to printable strings
 
-   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software
-   Foundation, Inc.
+   Copyright (C) 2001-2006, 2009-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -23,7 +22,25 @@
 
 #include "intprops.h"
 
-char *offtostr (off_t, char *);
-char *imaxtostr (intmax_t, char *);
-char *umaxtostr (uintmax_t, char *);
-char *uinttostr (unsigned int, char *);
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_MINOR__
+#  define __GNUC_PREREQ(maj, min) \
+         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+#  define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#if __GNUC_PREREQ (3,4)
+# undef __attribute_warn_unused_result__
+# define __attribute_warn_unused_result__ \
+   __attribute__ ((__warn_unused_result__))
+#else
+# define __attribute_warn_unused_result__ /* empty */
+#endif
+
+char *imaxtostr (intmax_t, char *) __attribute_warn_unused_result__;
+char *inttostr (int, char *) __attribute_warn_unused_result__;
+char *offtostr (off_t, char *) __attribute_warn_unused_result__;
+char *uinttostr (unsigned int, char *) __attribute_warn_unused_result__;
+char *umaxtostr (uintmax_t, char *) __attribute_warn_unused_result__;