5 files changed, 15 insertions, 2 deletions

diff --git a/shell/hush_test/hush-redir/redir_script.tests b/shell/hush_test/hush-redir/redir_script.tests
index ccc497d7b..740daa461 100755
--- a/shell/hush_test/hush-redir/redir_script.tests
+++ b/shell/hush_test/hush-redir/redir_script.tests
@@ -20,10 +20,15 @@ eval "find_fds $fds"
 
 # Shell should not lose that fd. Did it?
 find_fds
-test x"$fds1" = x"$fds" && { echo "Ok: script fd is not closed"; exit 0; }
+test x"$fds1" = x"$fds" \
+&& { echo "Ok: script fd is not closed"; exit 0; }
+
+# One legit way to handle it is to move script fd. For example, if we see that fd 10 moved to fd 11:
+test x"$fds1" = x" 10>&- 3>&-" && \
+test x"$fds"  = x" 11>&- 3>&-" \
+&& { echo "Ok: script fd is not closed"; exit 0; }
 
 echo "Bug: script fd is closed"
 echo "fds1:$fds1"
 echo "fds2:$fds"
 exit 1
-
diff --git a/shell/hush_test/hush-redir/redir_to_bad_fd255.right b/shell/hush_test/hush-redir/redir_to_bad_fd255.right
new file mode 100644
index 000000000..936911ce5
--- /dev/null
+++ b/shell/hush_test/hush-redir/redir_to_bad_fd255.right
@@ -0,0 +1 @@
+hush: can't duplicate file descriptor: Bad file descriptor
diff --git a/shell/hush_test/hush-redir/redir_to_bad_fd255.tests b/shell/hush_test/hush-redir/redir_to_bad_fd255.tests
new file mode 100755
index 000000000..2266af6da
--- /dev/null
+++ b/shell/hush_test/hush-redir/redir_to_bad_fd255.tests
@@ -0,0 +1,3 @@
+# ash uses fd 10 (usually) for reading the script
+echo LOST >&255
+echo OK
diff --git a/shell/hush_test/hush-redir/redir_to_bad_fd3.right b/shell/hush_test/hush-redir/redir_to_bad_fd3.right
new file mode 100644
index 000000000..936911ce5
--- /dev/null
+++ b/shell/hush_test/hush-redir/redir_to_bad_fd3.right
@@ -0,0 +1 @@
+hush: can't duplicate file descriptor: Bad file descriptor
diff --git a/shell/hush_test/hush-redir/redir_to_bad_fd3.tests b/shell/hush_test/hush-redir/redir_to_bad_fd3.tests
new file mode 100755
index 000000000..98c54cfc6
--- /dev/null
+++ b/shell/hush_test/hush-redir/redir_to_bad_fd3.tests
@@ -0,0 +1,3 @@
+# ash uses fd 10 (usually) for reading the script
+echo LOST >&3
+echo OK