From: Ben Harris <bjh21@bjh21.me.uk>
Date: Sun, 16 Nov 2025 13:54:31 +0000 (+0000)
Subject: Add assertions that we don't overflow the "points" array
X-Git-Tag: bedstead-3.261~20
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=ce6d060613b78441df931c294712e8622096a297;p=bedstead.git

Add assertions that we don't overflow the "points" array
---

diff --git a/bedstead.c b/bedstead.c
index 172492b..52afbb3 100644
--- a/bedstead.c
+++ b/bedstead.c
@@ -4366,6 +4366,7 @@ moveto(int x, int y)
 {
 	struct point *p = &points[nextpoint++];
 
+	assert(nextpoint <= MAXPOINTS);
 	p->v.x = x; p->v.y = y;
 	p->next = p->prev = NULL;
 }
@@ -4375,6 +4376,7 @@ lineto(int x, int y)
 {
 	struct point *p = &points[nextpoint++];
 
+	assert(nextpoint <= MAXPOINTS);
 	p->v.x = x; p->v.y = y;
 	p->next = NULL;
 	p->prev = p - 1;