From ec09912fa80f9581579d0f86f109f6703484f46e Mon Sep 17 00:00:00 2001
From: Tim Culverhouse <tim@timculverhouse.com>
Date: Fri, 2 Aug 2024 07:28:06 -0500
Subject: [PATCH] window(fill): bounds check end condition for fill

Fixes #65
---
 src/Window.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Window.zig b/src/Window.zig
index 4181670..a19e954 100644
--- a/src/Window.zig
+++ b/src/Window.zig
@@ -218,7 +218,7 @@ pub fn fill(self: Window, cell: Cell) void {
     if (self.x_off == 0 and self.width == self.screen.width) {
         // we have a full width window, therefore contiguous memory.
         const start = self.y_off * self.width;
-        const end = start + (self.height * self.width);
+        const end = @min(start + (self.height * self.width), self.screen.buf.len);
         @memset(self.screen.buf[start..end], cell);
     } else {
         // Non-contiguous. Iterate over rows an memset