On 2/18/13 2:55 PM, Stephane Chazelas wrote:
> Bash Version: 4.2
> Patch Level: 37
> Release Status: release
>
> Moving a file descriptor for a builtin command or a compound
> command leaves the fd closed afterwards:
>
> $ bash -c ': <&1-; echo test'
> bash: line 0: echo: write error: Bad file descriptor
>
> expected output: "test".
Thanks for the report. This has probably been around for as long as those
redirections have been around -- at least 10 years. I've attached a patch
to fix it.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
*** redir.c.old 2013-01-30 11:56:09.000000000 -0500
--- redir.c 2013-02-19 09:38:36.000000000 -0500
***************
*** 1045,1048 ****
--- 1045,1058 ----
REDIRECTION_ERROR (r, errno, -1);
}
+ if ((flags & RX_UNDOABLE) && (ri == r_move_input || ri == r_move_output))
+ {
+ /* r_move_input and r_move_output add an additional close()
+ that needs to be undone */
+ if (fcntl (redirector, F_GETFD, 0) != -1)
+ {
+ r = add_undo_redirect (redir_fd, r_close_this, -1);
+ REDIRECTION_ERROR (r, errno, -1);
+ }
+ }
#if defined (BUFFERED_INPUT)
check_bash_input (redirector);
