Bash-4.2 Official Patch 47

[Chet Ramey]

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

Bash-Release:   4.2
Patch-ID:       bash42-047

Bug-Reported-by:        Matthew Riley <mattdr@google.com>
Bug-Reference-ID:       
<CA+NEdkwP3gw+gbcF5+xnR1pvcuzb1mDVzvmuJOpHRGHA9T7VFg@mail.gmail.com>
Bug-Reference-URL:      
http://lists.gnu.org/archive/html/bug-bash/2013-03/msg00047.html

Bug-Description:

The function that shortens pathnames for $PS1 according to the value of
$PROMPT_DIRTRIM uses memcpy on potentially-overlapping regions of memory,
when it should use memmove.  The result is garbled pathnames in prompt
strings.

Patch (apply with `patch -p0'):

*** ../bash-4.2-patched/general.c       2010-12-12 15:06:27.000000000 -0500
--- general.c   2014-01-30 16:46:15.000000000 -0500
***************
*** 767,771 ****
  
    nlen = nend - ntail;
!   memcpy (nbeg, ntail, nlen);
    nbeg[nlen] = '\0';
  
--- 767,771 ----
  
    nlen = nend - ntail;
!   memmove (nbeg, ntail, nlen);
    nbeg[nlen] = '\0';
  
*** ../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 46
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 47
  
  #endif /* _PATCHLEVEL_H_ */

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