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_ */
