mirrors/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-23 17:53:37 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix another memory leak in regexp compiler (BZ #17069)

Browse Source
This commit is contained in:
Andreas Schwab 2014-06-20 12:41:27 +02:00
parent 7892406e35
commit aa6ec754f3
4 changed files with 15 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
ChangeLog
View File

@ -1,3 +1,10 @@
2014-06-20 Andreas Schwab <schwab@linux-m68k.org>
[BZ #17069]
* posix/regcomp.c (parse_reg_exp): Deallocate partially
constructed tree before returning error.
* posix/bug-regexp36.c: Expand test case.
2014-06-20 Stefan Liebler <stli@linux.vnet.ibm.com>
[BZ #6803]

2
NEWS
View File

@ -20,7 +20,7 @@ Version 2.20
16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16912, 16915,
16916, 16917, 16922, 16927, 16928, 16932, 16943, 16958, 16965, 16966,
16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031, 17042,
17048, 17058, 17062.
17048, 17058, 17062, 17069.
* Optimized strchr implementation for AArch64. Contributed by ARM Ltd.

4
posix/bug-regex36.c
View File

@ -1,4 +1,4 @@
/* Test regcomp not leaking memory on invalid repetition operator
/* Test regcomp not leaking memory on parse errors
Copyright (C) 2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -24,6 +24,6 @@ main (int argc, char **argv)
{
regex_t r;
mtrace ();
regcomp (&r, "[a]\\{-2,}", 0);
regcomp (&r, "[a]\\|[a]\\{-2,}", 0);
regfree (&r);
}

4
posix/regcomp.c
View File

@ -2154,8 +2154,12 @@ parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
{
branch = parse_branch (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && branch == NULL, 0))
{
if (tree != NULL)
postorder (tree, free_tree, NULL);
return NULL;
}
}
else
branch = NULL;
tree = create_tree (dfa, tree, branch, OP_ALT);