strerror_r: avoid compiler warning

A couple of copy-and-paste issues led to a compiler warning
during configure, detected on at least Solaris.

* m4/strerror_r.m4 (gl_FUNC_STRERROR_R): Don't return a char*.

Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/ChangeLog b/ChangeLog
index bda43a69aa7d904aacf2705a301ce569a8f57ae9..fafa86fbec5e60aca66cc8fdbc6da6a906dc63c7 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,9 @@
 2011-05-20  Eric Blake  <eblake@redhat.com>
 
-       strerror_r: simplify AIX code.
+       strerror_r: avoid compiler warning
+       * m4/strerror_r.m4 (gl_FUNC_STRERROR_R): Don't return a char*.
+
+       strerror_r: simplify AIX code
        * lib/strerror_r.c (strerror_r): Filter out buflen of 1 up front.
 
        test-perror: avoid spurious failure on FreeBSD

diff --git a/m4/strerror_r.m4 b/m4/strerror_r.m4
index 190472c9598070586d7bfab26401f7b938d98a9b..13fb931a9b3d7a63aaaff2876cd24ab904401760 100644 (file)
--- a/m4/strerror_r.m4
+++ b/m4/strerror_r.m4
@@ -1,4 +1,4 @@
-# strerror_r.m4 serial 6
+# strerror_r.m4 serial 7
 dnl Copyright (C) 2002, 2007-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -33,7 +33,7 @@ AC_DEFUN([gl_FUNC_STRERROR_R],
               [[#include <string.h>
                 int strerror_r (int, char *, size_t);
               ]],
-              [[return strerror (0);]])],
+              [])],
            [gl_cv_func_strerror_r_posix_signature=yes],
            [gl_cv_func_strerror_r_posix_signature=no])
         ])
@@ -48,7 +48,6 @@ AC_DEFUN([gl_FUNC_STRERROR_R],
              [AC_LANG_PROGRAM(
                 [[#include <errno.h>
                   #include <string.h>
-                  int strerror_r (int, char *, size_t);
                 ]],
                 [[int result = 0;
                   char buf[79];