Patch 9.0.1429

[Bram Moolenaar]

Patch 9.0.1429
Problem: Invalid memory access when ending insert mode.
Solution: Check if the insert_skip value is valid.
Files: src/edit.c


*** ../vim-9.0.1428/src/edit.c 2023-03-25 20:06:10.500816586 +0000
--- src/edit.c 2023-03-26 21:26:06.626831697 +0100
***************
*** 2438,2449 ****
* 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))
{
vim_free(last_insert);
last_insert = ptr;
! last_insert_skip = new_insert_skip;
}
else
vim_free(ptr);
--- 2438,2449 ----
* otherwise CTRL-O w and then <Left> will clear "last_insert".
*/
ptr = get_inserted();
! 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 = added < 0 ? 0 : new_insert_skip;
}
else
vim_free(ptr);
*** ../vim-9.0.1428/src/version.c 2023-03-25 20:06:10.504816579 +0000
--- src/version.c 2023-03-26 21:25:00.682861828 +0100
***************
*** 697,698 ****
--- 697,700 ----
{ /* Add new patch number below this line */
+ /**/
+ 1429,
/**/

--
GUARD #2: Wait a minute -- supposing two swallows carried it together?
GUARD #1: No, they'd have to have it on a line.
GUARD #2: Well, simple! They'd just use a standard creeper!
GUARD #1: What, held under the dorsal guiding feathers?
GUARD #2: Well, why not?
The Quest for the Holy Grail (Monty Python)

/// Bram Moolenaar -- Br...@Moolenaar.net -- http://www.Moolenaar.net \\\
/// \\\
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