Bash-4.1 Official Patch 13

[Chet Ramey]

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

Bash-Release:   4.1
Patch-ID:       bash41-013

Bug-Reported-by:        Tavis Ormandy <taviso@cmpxchg8b.com>
Bug-Reference-ID:
Bug-Reference-URL:      http://twitter.com/taviso/statuses/514887394294652929

Bug-Description:

Under certain circumstances, bash can incorrectly save a lookahead character and
return it on a subsequent call, even when reading a new line.

Patch (apply with `patch -p0'):

*** ../bash-4.1.12/parse.y      2011-02-24 19:41:01.000000000 -0500
--- parse.y     2014-09-25 16:13:57.000000000 -0400
***************
*** 2812,2815 ****
--- 2812,2817 ----
    word_desc_to_read = (WORD_DESC *)NULL;
  
+   eol_ungetc_lookahead = 0;
+ 
    current_token = '\n';               /* XXX */
    last_read_token = '\n';
*** ../bash-4.1-patched/patchlevel.h    2009-10-01 16:39:22.000000000 -0400
--- patchlevel.h        2010-01-14 09:38:08.000000000 -0500
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 12
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 13
  
  #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/