pipe: Set errno upon failure.

[gnulib.git] / m4 / setenv.m4

diff --git a/m4/setenv.m4 b/m4/setenv.m4
index 29e6866..ae4dd86 100644 (file)
--- a/m4/setenv.m4
+++ b/m4/setenv.m4
@@ -1,5 +1,5 @@
-# setenv.m4 serial 14
-dnl Copyright (C) 2001-2004, 2006-2009 Free Software Foundation, Inc.
+# setenv.m4 serial 15
+dnl Copyright (C) 2001-2004, 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -77,7 +77,7 @@ int unsetenv();
        #include <stdlib.h>
       ]], [[
        char entry[] = "b=2";
-       if (putenv ("a=1")) return 1;
+       if (putenv ((char *) "a=1")) return 1;
        if (putenv (entry)) return 2;
        entry[0] = 'a';
        unsetenv ("a");