X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fposix-shell.m4;h=5992e6f8f50e712d9f6bf5f5fa7cf92566bc7113;hb=75588b6ed2692b86b760b5390a33d380d642c925;hp=7f3b1e944f4ca6f98119f35073d0eb4d2b06b5ed;hpb=7a6db3dccd370c0f159669cf66b4e503d1bb8886;p=gnulib.git

diff --git a/m4/posix-shell.m4 b/m4/posix-shell.m4
index 7f3b1e944..5992e6f8f 100644
--- a/m4/posix-shell.m4
+++ b/m4/posix-shell.m4
@@ -1,6 +1,6 @@
 # Find a POSIX-conforming shell.
 
-# Copyright (C) 2007-2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -17,33 +17,37 @@ AC_DEFUN([gl_POSIX_SHELL],
   AC_CACHE_CHECK([for a shell that conforms to POSIX], [gl_cv_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 "$gl_test_posix_shell_script" 2>/dev/null \
-	     && break;;
+           "$gl_cv_posix_shell" -c "$gl_test_posix_shell_script" 2>/dev/null \
+             && break;;
        esac
      done])