Bash-5.1 Official patch 2

[Chet Ramey]

                             BASH PATCH REPORT
                             =================

Bash-Release:   5.1
Patch-ID:       bash51-002

Bug-Reported-by:        oguzismailuysal@gmail.com
Bug-Reference-ID:       
<CAH7i3LoHFUa4aSF5-AD2r80HG-p-YzD_9ZxomarZkhP8NMq63g@mail.gmail.com>
Bug-Reference-URL:      
https://lists.gnu.org/archive/html/bug-bash/2020-12/msg00037.html

Bug-Description:

If there are no jobs, and the `-n' and `-p' options are both supplied to
`wait', bash can assign a value to the variable name specified with `-p'
instead of leaving it unset.

Patch (apply with `patch -p0'):

*** ../bash-5.1-patched/builtins/wait.def       2020-04-09 15:13:57.000000000 
-0400
--- builtins/wait.def   2020-12-11 09:46:49.000000000 -0500
***************
*** 214,222 ****
  
        status = wait_for_any_job (wflags, &pstat);
-       if (status < 0)
-       status = 127;
- 
        if (vname && status >= 0)
        bind_var_to_int (vname, pstat.pid);
        if (list)
        unset_waitlist ();
--- 214,222 ----
  
        status = wait_for_any_job (wflags, &pstat);
        if (vname && status >= 0)
        bind_var_to_int (vname, pstat.pid);
+ 
+       if (status < 0)
+       status = 127;
        if (list)
        unset_waitlist ();

*** ../bash-5.1/patchlevel.h    2020-06-22 14:51:03.000000000 -0400
--- patchlevel.h        2020-10-01 11:01:28.000000000 -0400
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 1
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 2
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/