buildroot

                 BASH PATCH REPORT

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

​

Bash-Release:   4.2

Patch-ID:   bash42-015

​

Bug-Reported-by:    <dnade.ext@orange-ftgroup.com>

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;