nano

commit d4d2840f5d456adecfbc5ddfcb08e4550f55ae9e
parent 119ec47072824e1a3f01fa81d7573a784cebfed0
Author: Benno Schulenberg <bensberg@telfort.nl>
Date:   Wed, 28 Sep 2022 16:21:10 +0200

filtering: when returning to a line number, ensure it is within range

The function line_from_number() can handle only line numbers that exist,
and will crash otherwise.  (The lack of checks makes the function fast.)

This fixes https://savannah.gnu.org/bugs/?63120.

Bug existed since commit d1e28417 from five weeks ago.

Diffstat:
M
src/search.c
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/search.c b/src/search.c
@@ -747,7 +747,11 @@ void goto_line_posx(ssize_t linenumber, size_t pos_x)
 		recook |= perturbed;
 #endif
 
-	openfile->current = line_from_number(linenumber);
+	if (linenumber < openfile->filebot->lineno)
+		openfile->current = line_from_number(linenumber);
+	else
+		openfile->current = openfile->filebot;
+
 	openfile->current_x = pos_x;
 	openfile->placewewant = xplustabs();