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BASH PATCH REPORT
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=================
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Bash-Release: 3.2
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Patch-ID: bash32-038
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Bug-Reported-by: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
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Bug-Reference-ID: <200803131141.m2DBf9vo001136@wojtek.tensor.gdynia.pl>
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2008-03/msg00029.html
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Bug-Description:
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When reading input lines into a single variable using the `read' builtin,
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bash did not free the memory it read after assigining it to the named
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variable, causing a memory leak noticable when reading large amounts of
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data.
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Patch:
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*** ../bash-3.2-patched/builtins/read.def 2007-08-25 13:47:07.000000000 -0400
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--- builtins/read.def 2008-03-07 12:55:47.000000000 -0500
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***************
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*** 135,139 ****
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char c;
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char *input_string, *orig_input_string, *ifs_chars, *prompt, *arrayname;
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! char *e, *t, *t1, *ps2;
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struct stat tsb;
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SHELL_VAR *var;
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--- 152,156 ----
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char c;
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char *input_string, *orig_input_string, *ifs_chars, *prompt, *arrayname;
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! char *e, *t, *t1, *ps2, *tofree;
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struct stat tsb;
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SHELL_VAR *var;
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***************
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*** 675,678 ****
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--- 728,732 ----
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/* Check whether or not the number of fields is exactly the same as the
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number of variables. */
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+ tofree = NULL;
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if (*input_string)
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{
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***************
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*** 680,684 ****
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t = get_word_from_string (&input_string, ifs_chars, &e);
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if (*input_string == 0)
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! input_string = t;
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else
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input_string = strip_trailing_ifs_whitespace (t1, ifs_chars, saw_escape);
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--- 734,738 ----
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t = get_word_from_string (&input_string, ifs_chars, &e);
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if (*input_string == 0)
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! tofree = input_string = t;
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else
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input_string = strip_trailing_ifs_whitespace (t1, ifs_chars, saw_escape);
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***************
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*** 695,698 ****
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--- 749,754 ----
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var = bind_read_variable (list->word->word, input_string);
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stupidly_hack_special_variables (list->word->word);
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+ FREE (tofree);
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+
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if (var)
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VUNSETATTR (var, att_invisible);
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*** ../bash-3.2/patchlevel.h Thu Apr 13 08:31:04 2006
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--- patchlevel.h Mon Oct 16 14:22:54 2006
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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 37
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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 38
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#endif /* _PATCHLEVEL_H_ */
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