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patch 8.0.0575: using freed memory when resetting 'indentexpr'

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Problem:    Using freed memory when resetting 'indentexpr' while evaluating
            it. (Dominique Pelle)
Solution:   Make a copy of 'indentexpr'.
This commit is contained in:
Bram Moolenaar
2017-04-20 22:57:27 +02:00
parent 99895eac1c
commit a701b3b6f0
3 changed files with 26 additions and 1 deletions
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12
src/misc1.c
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@@ -9252,6 +9252,7 @@ find_match(int lookfor, linenr_T ourscope)
get_expr_indent(void)
{
int indent;
char_u *inde_copy;
pos_T save_pos;
colnr_T save_curswant;
int save_set_curswant;
@@ -9268,7 +9269,16 @@ get_expr_indent(void)
if (use_sandbox)
++sandbox;
++textlock;
indent = (int)eval_to_number(curbuf->b_p_inde);
/* Need to make a copy, the 'indentexpr' option could be changed while
* evaluating it. */
inde_copy = vim_strsave(curbuf->b_p_inde);
if (inde_copy != NULL)
{
indent = (int)eval_to_number(inde_copy);
vim_free(inde_copy);
}
if (use_sandbox)
--sandbox;
--textlock;