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patch 9.0.1429: invalid memory access when ending insert mode

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Problem:    Invalid memory access when ending insert mode.
Solution:   Check if the insert_skip value is valid.
This commit is contained in:
Bram Moolenaar
2023-03-26 21:27:24 +01:00
parent c174c2e58c
commit 1a08a3e2a5
2 changed files with 5 additions and 3 deletions
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6
src/edit.c
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@@ -2438,12 +2438,12 @@ stop_insert(
* otherwise CTRL-O w and then <Left> will clear "last_insert".
*/
ptr = get_inserted();
if (did_restart_edit == 0 || (ptr != NULL
&& (int)STRLEN(ptr) > new_insert_skip))
int added = ptr == NULL ? 0 : (int)STRLEN(ptr) - new_insert_skip;
if (did_restart_edit == 0 || added > 0)
{
vim_free(last_insert);
last_insert = ptr;
last_insert_skip = new_insert_skip;
last_insert_skip = added < 0 ? 0 : new_insert_skip;
}
else
vim_free(ptr);