BASH PATCH REPORT

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

Bash-Release:	4.2

Patch-ID:	bash42-039

Bug-Reported-by:	Dan Douglas <[email protected]>

Bug-Reference-ID:	<1498458.MpVlmOXDB7@smorgbox>

Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2012-09/msg00008.html

Bug-Description:

Under certain circumstances, bash attempts to expand variables in arithmetic

expressions even when evaluation is being suppressed.

Patch (apply with `patch -p0'):

*** ../bash-4.2-patched/expr.c	2011-11-21 18:03:35.000000000 -0500

--- expr.c	2012-09-09 16:31:18.000000000 -0400

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

*** 1010,1013 ****

--- 1073,1082 ----

  #endif

+ /*itrace("expr_streval: %s: noeval = %d", tok, noeval);*/

+   /* If we are suppressing evaluation, just short-circuit here instead of

+      going through the rest of the evaluator. */

+   if (noeval)

+     return (0);

+ 

    /* [[[[[ */

  #if defined (ARRAY_VARS)

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

*** 1183,1186 ****

--- 1256,1263 ----

        *cp = '\0';

+       /* XXX - watch out for pointer aliasing issues here */

+       if (curlval.tokstr && curlval.tokstr == tokstr)

+ 	init_lvalue (&curlval);

+ 

        FREE (tokstr);

        tokstr = savestring (tp);

*** ../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 38

  #endif /* _PATCHLEVEL_H_ */

--- 26,30 ----

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

! #define PATCHLEVEL 39

  #endif /* _PATCHLEVEL_H_ */