patch 8.2.3484: crash when going through spell suggestions
Problem: Crash when going through spell suggestions.
Solution: Limit the text length for finding suggestions to the original
length. Do not update buffers when exiting. (closes #8965)
diff --git a/src/spellsuggest.c b/src/spellsuggest.c
index 2951eea..a6dbc78 100644
--- a/src/spellsuggest.c
+++ b/src/spellsuggest.c
@@ -1178,6 +1178,11 @@
p = su->su_badptr + su->su_badlen;
(void)spell_casefold(curwin, p, (int)STRLEN(p), fword + n, MAXWLEN - n);
+ // Make sure the resulting text is not longer than the original text.
+ n = (int)STRLEN(su->su_badptr);
+ if (n < MAXWLEN)
+ fword[n] = NUL;
+
for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi)
{
lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi);