pthread_sigmask tests: Avoid a compiler warning.

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

diff --git a/m4/unlink-busy.m4 b/m4/unlink-busy.m4
index cdc5f74..f5739c2 100644 (file)
--- a/m4/unlink-busy.m4
+++ b/m4/unlink-busy.m4
@@ -1,10 +1,10 @@
-#serial 10
+#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, 2006 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.


@@ -12,24 +12,29 @@ dnl HPUX and other systems can't unlink shared text that is being executed.
 AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
 [dnl
   AC_CACHE_CHECK([whether a running program can be unlinked],
 AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
 [dnl
   AC_CACHE_CHECK([whether a running program can be unlinked],

-    jm_cv_func_unlink_busy_text,
+    gl_cv_func_unlink_busy_text,

     [
       AC_RUN_IFELSE(
         [AC_LANG_SOURCE(
     [
       AC_RUN_IFELSE(
         [AC_LANG_SOURCE(

-           [AC_INCLUDES_DEFAULT
-           int
-           main (int argc, char **argv)
-           {
-             return !argc || unlink (argv[0]) != 0;
-           }])],
-      jm_cv_func_unlink_busy_text=yes,
-      jm_cv_func_unlink_busy_text=no,
-      jm_cv_func_unlink_busy_text=no
+           [AC_INCLUDES_DEFAULT[
+            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

       )
     ]
   )
 
       )
     ]
   )
 

-  if test $jm_cv_func_unlink_busy_text = no; then
+  if test $gl_cv_func_unlink_busy_text = no; then

     INSTALL=$ac_install_sh
   fi
 ])
     INSTALL=$ac_install_sh
   fi
 ])