BASH PATCH REPORT

			     =================

Bash-Release:	4.2

Patch-ID:	bash42-009

Bug-Reported-by:	<[email protected]>

Bug-Reference-ID:	<[email protected]>

Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2011-04/msg00075.html

Bug-Description:

Under certain circumstances, running `fc -l' two times in succession with a

relative history offset at the end of the history will result in an incorrect

calculation of the last history entry and a seg fault.

Patch (apply with `patch -p0'):

*** ../bash-4.2-patched/builtins/fc.def	2010-05-30 18:25:38.000000000 -0400

--- builtins/fc.def	2011-04-19 15:46:17.000000000 -0400

***************

*** 305,309 ****

    /* XXX */

!   if (saved_command_line_count > 0 && i == last_hist && hlist[last_hist] == 0)

      while (last_hist >= 0 && hlist[last_hist] == 0)

        last_hist--;

--- 305,309 ----

    /* XXX */

!   if (i == last_hist && hlist[last_hist] == 0)

      while (last_hist >= 0 && hlist[last_hist] == 0)

        last_hist--;

***************

*** 476,480 ****

  {

    int sign, n, clen, rh;

!   register int i, j;

    register char *s;

--- 476,480 ----

  {

    int sign, n, clen, rh;

!   register int i, j, last_hist;

    register char *s;

***************

*** 496,500 ****

       calculation as if it were on. */

    rh = remember_on_history || ((subshell_environment & SUBSHELL_COMSUB) && enable_history_list);

!   i -= rh + hist_last_line_added;

    /* No specification defaults to most recent command. */

--- 496,508 ----

       calculation as if it were on. */

    rh = remember_on_history || ((subshell_environment & SUBSHELL_COMSUB) && enable_history_list);

!   last_hist = i - rh - hist_last_line_added;

! 

!   if (i == last_hist && hlist[last_hist] == 0)

!     while (last_hist >= 0 && hlist[last_hist] == 0)

!       last_hist--;

!   if (last_hist < 0)

!     return (-1);

! 

!   i = last_hist;

    /* No specification defaults to most recent command. */

*** ../bash-4.2-patched/patchlevel.h	Sat Jun 12 20:14:48 2010

--- patchlevel.h	Thu Feb 24 21:41:34 2011

***************

*** 26,30 ****

     looks for to find the patch level (for the sccs version string). */

! #define PATCHLEVEL 8

  #endif /* _PATCHLEVEL_H_ */

--- 26,30 ----

     looks for to find the patch level (for the sccs version string). */

! #define PATCHLEVEL 9

  #endif /* _PATCHLEVEL_H_ */