source: npl/system/bash/bash-4.3-patches/bash43-026

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

Bash-Release:   4.3
Patch-ID:       bash43-026

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-4.3.25/parse.y      2014-07-30 10:14:31.000000000 -0400
--- parse.y     2014-09-25 20:20:21.000000000 -0400
***************
*** 2954,2957 ****
--- 2954,2959 ----
    word_desc_to_read = (WORD_DESC *)NULL;
  
+   eol_ungetc_lookahead = 0;
+ 
    current_token = '\n';               /* XXX */
    last_read_token = '\n';
*** ../bash-4.3.25/y.tab.c      2014-07-30 10:14:32.000000000 -0400
--- y.tab.c     2014-09-25 20:21:48.000000000 -0400
***************
*** 5266,5269 ****
--- 5266,5271 ----
    word_desc_to_read = (WORD_DESC *)NULL;
  
+   eol_ungetc_lookahead = 0;
+ 
    current_token = '\n';               /* XXX */
    last_read_token = '\n';
***************
*** 8540,8542 ****
  }
  #endif /* HANDLE_MULTIBYTE */
- 
--- 8542,8543 ----
*** ../bash-4.3/patchlevel.h    2012-12-29 10:47:57.000000000 -0500
--- patchlevel.h        2014-03-20 20:01:28.000000000 -0400
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 25
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 26
  
  #endif /* _PATCHLEVEL_H_ */