Fix #948

src/Buffer.ts

@@ -11,6 +11,7 @@ export const CHAR_DATA_ATTR_INDEX = 0;
 export const CHAR_DATA_CHAR_INDEX = 1;
 export const CHAR_DATA_WIDTH_INDEX = 2;
 export const CHAR_DATA_CODE_INDEX = 3;
+export const MAX_BUFFER_SIZE = -1 >>> 0; // 2^32 - 1
 
 /**
  * This class represents a terminal buffer (an internal state of the terminal), where the
@@ -68,7 +69,10 @@ export class Buffer implements IBuffer {
     if (!this._hasScrollback) {
       return rows;
     }
-    return rows + this._terminal.options.scrollback;
+
+    const correctBuferLength = rows + this._terminal.options.scrollback;
+
+    return correctBuferLength > MAX_BUFFER_SIZE ? MAX_BUFFER_SIZE : correctBuferLength;
   }
 
   /**