#! /bin/sh -e

if [ $# -eq 3 -a "$2" = '-d' ]; then
    pdir="-d $3"
elif [ $# -ne 1 ]; then
    echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
    exit 1
fi
case "$1" in
    -patch) patch $pdir -f --no-backup-if-mismatch -p0 < $0;;
    -unpatch) patch $pdir -f --no-backup-if-mismatch -R -p0 < $0;;
    *)
	echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
	exit 1
esac
exit 0

# DP: bash-3.2 upstream patch bash32-018

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

Bash-Release: 3.2
Patch-ID: bash32-018

Bug-Reported-by:	osicka@post.cz
Bug-Reference-ID:	<228.177-19682-1132061412-1179356692@post.cz>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2007-05/msg00061.html

Bug-Description:

In certain cases, bash can lose the saved status of a background job, though
it should still be reported by `wait'.  Bash can also loop infinitely after
creating and waiting for 4096 jobs.

Patch:

*** ../bash-20070510/jobs.c	Thu Mar  8 16:05:50 2007
--- jobs.c	Fri May 18 11:40:14 2007
***************
*** 784,792 ****
      {
        old = js.j_firstj++;
        while (js.j_firstj != old)
  	{
  	  if (js.j_firstj >= js.j_jobslots)
  	    js.j_firstj = 0;
! 	  if (jobs[js.j_firstj])
  	    break;
  	  js.j_firstj++;
--- 784,794 ----
      {
        old = js.j_firstj++;
+       if (old >= js.j_jobslots)
+ 	old = js.j_jobslots - 1;
        while (js.j_firstj != old)
  	{
  	  if (js.j_firstj >= js.j_jobslots)
  	    js.j_firstj = 0;
! 	  if (jobs[js.j_firstj] || js.j_firstj == old)	/* needed if old == 0 */
  	    break;
  	  js.j_firstj++;
***************
*** 798,806 ****
      {
        old = js.j_lastj--;
        while (js.j_lastj != old)
  	{
  	  if (js.j_lastj < 0)
  	    js.j_lastj = js.j_jobslots - 1;
! 	  if (jobs[js.j_lastj])
  	    break;
  	  js.j_lastj--;
--- 800,810 ----
      {
        old = js.j_lastj--;
+       if (old < 0)
+ 	old = 0;
        while (js.j_lastj != old)
  	{
  	  if (js.j_lastj < 0)
  	    js.j_lastj = js.j_jobslots - 1;
! 	  if (jobs[js.j_lastj] || js.j_lastj == old)	/* needed if old == js.j_jobslots */
  	    break;
  	  js.j_lastj--;
***************
*** 964,968 ****
    realloc_jobs_list ();
  
!   return (js.j_lastj);
  }
  
--- 975,983 ----
    realloc_jobs_list ();
  
! #ifdef DEBUG
!   itrace("compact_jobs_list: returning %d", (js.j_lastj || jobs[js.j_lastj]) ? js.j_lastj + 1 : 0);
! #endif
! 
!   return ((js.j_lastj || jobs[js.j_lastj]) ? js.j_lastj + 1 : 0);
  }
  
*** ../bash-3.2/patchlevel.h	Thu Apr 13 08:31:04 2006
--- patchlevel.h	Mon Oct 16 14:22:54 2006
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 17
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 18
  
  #endif /* _PATCHLEVEL_H_ */