X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fposix-shell.m4;h=709995ddf5b5a863fc293c45eeca48b8e8153167;hb=4226cf28cbf8b81423e6a1ee4075020f55e320d8;hp=ac526d5c3788a606351beb57d597e69f7b20a9aa;hpb=04f591dbbe18273eab516bd668b5cab8896c3a00;p=gnulib.git

diff --git a/m4/posix-shell.m4 b/m4/posix-shell.m4
index ac526d5c3..709995ddf 100644
--- a/m4/posix-shell.m4
+++ b/m4/posix-shell.m4
@@ -1,6 +1,6 @@
 # Find a POSIX-conforming shell.
 
-# Copyright (C) 2007 Free Software Foundation, Inc.
+# Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -15,34 +15,39 @@
 AC_DEFUN([gl_POSIX_SHELL],
 [
   AC_CACHE_CHECK([for a shell that conforms to POSIX], [gl_cv_posix_shell],
-    [gl_test_POSIX_SHELL='
+    [gl_test_posix_shell_script='
        func_return () {
-	 (exit [$]1)
+         (exit [$]1)
        }
        func_success () {
-	 func_return 0
+         func_return 0
        }
        func_failure () {
-	 func_return 1
+         func_return 1
        }
        func_ret_success () {
-	 return 0
+         return 0
        }
        func_ret_failure () {
-	 return 1
+         return 1
+       }
+       subshell_umask_sanity () {
+         (umask 22; (umask 0); test $(umask) -eq 22)
        }
        test "[$](echo foo)" = foo &&
        func_success &&
        ! func_failure &&
        func_ret_success &&
        ! func_ret_failure &&
-       (set x && func_ret_success y && test x = "[$]1")
+       (set x && func_ret_success y && test x = "[$]1") &&
+       subshell_umask_sanity
      '
      for gl_cv_posix_shell in \
-	 "$CONFIG_SHELL" "$SHELL" /bin/sh /bin/bash /bin/ksh /bin/sh5 no; do
+         "$CONFIG_SHELL" "$SHELL" /bin/sh /bin/bash /bin/ksh /bin/sh5 no; do
        case $gl_cv_posix_shell in
          /*)
-	   "$gl_cv_posix_shell" -c "$gl_test_POSIX_shell" 2>/dev/null && break;;
+           "$gl_cv_posix_shell" -c "$gl_test_posix_shell_script" 2>/dev/null \
+             && break;;
        esac
      done])