From 9d26ab2dc822ce20c399921ec82f4b0151f4c297 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sat, 6 Aug 2022 15:44:20 -0700
Subject: [PATCH] memset zero values when resizing a screen

Zig safety checks save us! It was setting undefined values to `0xAA` and
we caught that in a crash. We need to zero this memory.

Practically this happened when `cat`-ing a large file, then attempting
to select and copy any blank trailing space.
---
 src/terminal/Screen.zig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/terminal/Screen.zig b/src/terminal/Screen.zig
index 6d9f7ef2b..e6460bf81 100644
--- a/src/terminal/Screen.zig
+++ b/src/terminal/Screen.zig
@@ -361,6 +361,7 @@ pub fn resize(self: *Screen, alloc: Allocator, rows: usize, cols: usize) !void {
 
     // Reallocate the storage
     self.storage = try alloc.alloc(Cell, (rows + self.max_scrollback) * cols);
+    std.mem.set(Cell, self.storage, .{ .char = 0 });
     self.top = 0;
     self.bottom = rows;
     self.rows = rows;