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updated for version 7.3.975

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Problem:    Crash in regexp parsing.
Solution:   Correctly compute the end of allocated memory.
This commit is contained in:
Bram Moolenaar
2013-05-20 13:44:29 +02:00
parent 10f3a79e89
commit bc0ea8f75e
2 changed files with 9 additions and 2 deletions
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9
src/regexp_nfa.c
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@@ -231,14 +231,19 @@ nfa_regcomp_start(expr, re_flags)
/* A reasonable estimation for size */
nstate_max = (STRLEN(expr) + 1) * NFA_POSTFIX_MULTIPLIER;
/* Size for postfix representation of expr */
/* Some items blow up in size, such as [A-z]. Add more space for that.
* TODO: some patterns may still fail. */
// nstate_max += 1000;
/* Size for postfix representation of expr. */
postfix_size = sizeof(*post_start) * nstate_max;
post_start = (int *)lalloc(postfix_size, TRUE);
if (post_start == NULL)
return FAIL;
vim_memset(post_start, 0, postfix_size);
post_ptr = post_start;
post_end = post_start + postfix_size;
post_end = post_start + nstate_max;
nfa_has_zend = FALSE;
regcomp_start(expr, re_flags);