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BASH PATCH REPORT
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=================
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Bash-Release: 4.2
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Patch-ID: bash42-015
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Bug-Reported-by: <dnade.ext@orange-ftgroup.com>
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Bug-Reference-ID: <728_1312188080_4E3666B0_728_118711_1_3B5D3E0F95CC5C478D6500CDCE8B691F7AAAA4AA3D@PUEXCB2B.nanterre.francetelecom.fr>
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2011-08/msg00000.html
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Bug-Description:
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When in a context where arithmetic evaluation is not taking place, the
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evaluator should not check for division by 0.
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Patch (apply with `patch -p0'):
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*** ../bash-4.2-patched/expr.c 2010-12-21 11:12:13.000000000 -0500
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--- expr.c 2011-08-02 20:58:28.000000000 -0400
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***************
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*** 477,480 ****
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--- 481,492 ----
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if (special)
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{
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+ if ((op == DIV || op == MOD) && value == 0)
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+ {
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+ if (noeval == 0)
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+ evalerror (_("division by 0"));
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+ else
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+ value = 1;
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+ }
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+
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switch (op)
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{
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***************
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*** 483,493 ****
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break;
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case DIV:
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- if (value == 0)
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- evalerror (_("division by 0"));
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lvalue /= value;
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break;
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case MOD:
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- if (value == 0)
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- evalerror (_("division by 0"));
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lvalue %= value;
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break;
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--- 495,501 ----
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***************
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*** 805,809 ****
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if (((op == DIV) || (op == MOD)) && (val2 == 0))
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! evalerror (_("division by 0"));
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if (op == MUL)
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--- 813,822 ----
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if (((op == DIV) || (op == MOD)) && (val2 == 0))
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! {
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! if (noeval == 0)
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! evalerror (_("division by 0"));
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! else
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! val2 = 1;
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! }
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if (op == MUL)
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*** ../bash-4.2-patched/patchlevel.h Sat Jun 12 20:14:48 2010
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--- patchlevel.h Thu Feb 24 21:41:34 2011
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***************
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*** 26,30 ****
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 14
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#endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 15
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#endif /* _PATCHLEVEL_H_ */
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