st

commit 688f70add0d1da8a416bf7df763328d694a24a3a
parent 0723b7e39e73b2bcfce047b047f6e795d6184028
Author: Milos Nikic <nikic.milos@gmail.com>
Date:   Wed, 14 Jan 2026 21:00:32 -0800

st: guard tsetdirt() against zero-sized terminal

tsetdirt() assumes term.row > 0. During early init or
resize paths this may not hold, leading to out-of-bounds
access. Bail out early if there are no rows.

Diffstat:
M
st.c
 | 
3
+++

1 file changed, 3 insertions(+), 0 deletions(-)
diff --git a/st.c b/st.c
@@ -965,6 +965,9 @@ tsetdirt(int top, int bot)
 {
 	int i;
 
+	if (term.row <= 0)
+		return;
+
 	LIMIT(top, 0, term.row-1);
 	LIMIT(bot, 0, term.row-1);