From d2c28c819f6127e1fdf8ea013b0e55f1638b1ccf Mon Sep 17 00:00:00 2001
From: Lewis Sanchez <lewissanchez@microsoft.com>
Date: Fri, 14 Jul 2023 11:31:59 -0700
Subject: [PATCH] Add getRasterizedGlyph null and undefined check

---
 addons/xterm-addon-canvas/src/BaseRenderLayer.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/addons/xterm-addon-canvas/src/BaseRenderLayer.ts b/addons/xterm-addon-canvas/src/BaseRenderLayer.ts
index 1d1936e7..3bb55411 100644
--- a/addons/xterm-addon-canvas/src/BaseRenderLayer.ts
+++ b/addons/xterm-addon-canvas/src/BaseRenderLayer.ts
@@ -368,6 +368,11 @@ export abstract class BaseRenderLayer extends Disposable implements IRenderLayer
   protected _drawChars(cell: ICellData, x: number, y: number): void {
     const chars = cell.getChars();
     this._cellColorResolver.resolve(cell, x, this._bufferService.buffer.ydisp + y);
+
+    if (this._charAtlas === undefined || this._charAtlas === null) {
+      return;
+    }
+
     let glyph: IRasterizedGlyph;
     if (chars && chars.length > 1) {
       glyph = this._charAtlas.getRasterizedGlyphCombinedChar(chars, this._cellColorResolver.result.bg, this._cellColorResolver.result.fg, this._cellColorResolver.result.ext);