patch 8.2.3471: crash when using CTRL-T after an empty search pattern
Problem: Crash when using CTRL-T after an empty search pattern.
Solution: Bail out when there is no previous search pattern. (closes #8953)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index a49fa05..07eac90 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -612,7 +612,8 @@
// NOTE: must call restore_last_search_pattern() before returning!
save_last_search_pattern();
- if (!do_incsearch_highlighting(firstc, &search_delim, is_state, &skiplen, &patlen))
+ if (!do_incsearch_highlighting(firstc, &search_delim, is_state,
+ &skiplen, &patlen))
{
restore_last_search_pattern();
return OK;
@@ -626,6 +627,11 @@
if (search_delim == ccline.cmdbuff[skiplen])
{
pat = last_search_pattern();
+ if (pat == NULL)
+ {
+ restore_last_search_pattern();
+ return FAIL;
+ }
skiplen = 0;
patlen = (int)STRLEN(pat);
}