New module 'sys_types'.

[gnulib.git] / m4 / unlink-busy.m4

diff --git a/m4/unlink-busy.m4 b/m4/unlink-busy.m4
index a38eb70..f5739c2 100644 (file)
--- a/m4/unlink-busy.m4
+++ b/m4/unlink-busy.m4
@@ -1,10 +1,10 @@
-#serial 11
+#serial 12

 
 dnl From J. David Anglin.
 
 dnl HPUX and other systems can't unlink shared text that is being executed.
 
 
 dnl From J. David Anglin.
 
 dnl HPUX and other systems can't unlink shared text that is being executed.
 

-# Copyright (C) 2000, 2001, 2004, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2004, 2007, 2009-2011 Free Software Foundation, Inc.

 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.


@@ -17,11 +17,16 @@ AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
       AC_RUN_IFELSE(
         [AC_LANG_SOURCE(
            [AC_INCLUDES_DEFAULT[
       AC_RUN_IFELSE(
         [AC_LANG_SOURCE(
            [AC_INCLUDES_DEFAULT[

-           int
-           main (int argc, char **argv)
-           {
-             return !argc || unlink (argv[0]) != 0;
-           }]])],
+            int
+            main (int argc, char **argv)
+            {
+              int result = 0;
+              if (argc == 0)
+                result |= 1;
+              else if (unlink (argv[0]) != 0)
+                result |= 2;
+              return result;
+            }]])],

       gl_cv_func_unlink_busy_text=yes,
       gl_cv_func_unlink_busy_text=no,
       gl_cv_func_unlink_busy_text=no
       gl_cv_func_unlink_busy_text=yes,
       gl_cv_func_unlink_busy_text=no,
       gl_cv_func_unlink_busy_text=no