BASH PATCH REPORT

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

Bash-Release:	4.2

Patch-ID:	bash42-015

Bug-Reported-by:	<[email protected]>

Bug-Reference-ID:	<728_1312188080_4E3666B0_728_118711_1_3B5D3E0F95CC5C478D6500CDCE8B691F7AAAA4AA3D@PUEXCB2B.nanterre.francetelecom.fr>

Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2011-08/msg00000.html

Bug-Description:

When in a context where arithmetic evaluation is not taking place, the

evaluator should not check for division by 0.

Patch (apply with `patch -p0'):

*** ../bash-4.2-patched/expr.c	2010-12-21 11:12:13.000000000 -0500

--- expr.c	2011-08-02 20:58:28.000000000 -0400

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

*** 477,480 ****

--- 481,492 ----

        if (special)

  	{

+ 	  if ((op == DIV || op == MOD) && value == 0)

+ 	    {

+ 	      if (noeval == 0)

+ 		evalerror (_("division by 0"));

+ 	      else

+ 	        value = 1;

+ 	    }

+ 

  	  switch (op)

  	    {

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

*** 483,493 ****

  	      break;

  	    case DIV:

- 	      if (value == 0)

- 		evalerror (_("division by 0"));

  	      lvalue /= value;

  	      break;

  	    case MOD:

- 	      if (value == 0)

- 		evalerror (_("division by 0"));

  	      lvalue %= value;

  	      break;

--- 495,501 ----

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

*** 805,809 ****

        if (((op == DIV) || (op == MOD)) && (val2 == 0))

! 	evalerror (_("division by 0"));

        if (op == MUL)

--- 813,822 ----

        if (((op == DIV) || (op == MOD)) && (val2 == 0))

! 	{

! 	  if (noeval == 0)

! 	    evalerror (_("division by 0"));

! 	  else

! 	    val2 = 1;

! 	}

        if (op == MUL)

*** ../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 14

  #endif /* _PATCHLEVEL_H_ */

--- 26,30 ----

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

! #define PATCHLEVEL 15

  #endif /* _PATCHLEVEL_H_ */