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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: bash42-011
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Bug-Reported-by: "David Parks" <davidparks21@yahoo.com>
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Bug-Reference-ID: <014101cc82c6$46ac1540$d4043fc0$@com>
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2011-10/msg00031.html
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Bug-Description:
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Overwriting a value in an associative array causes the memory allocated to
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store the key on the second and subsequent assignments to leak.
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Patch (apply with `patch -p0'):
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*** ../bash-4.2-patched/assoc.c 2009-08-05 20:19:40.000000000 -0400
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--- assoc.c 2011-10-04 20:23:07.000000000 -0400
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***************
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*** 78,81 ****
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--- 78,86 ----
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if (b == 0)
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return -1;
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+ /* If we are overwriting an existing element's value, we're not going to
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+ use the key. Nothing in the array assignment code path frees the key
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+ string, so we can free it here to avoid a memory leak. */
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+ if (b->key != key)
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+ free (key);
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FREE (b->data);
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b->data = value ? savestring (value) : (char *)0;
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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 10
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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 11
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#endif /* _PATCHLEVEL_H_ */
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