From 12519fb2fc252dd60755bf4090aedaca0ebc136f Mon Sep 17 00:00:00 2001
From: Yusuke Suzuki <ysuzuki@apple.com>
Date: Wed, 12 Nov 2025 16:21:40 -0800
Subject: [PATCH] async-fs / sync-fs should generate all possible bytes

randomFileContents are using (x % 255), but it only includes [0, 255).
So, 0xff is not populated. I think probably (x % 256) is the right one.
---
 generators/async-file-system.js | 2 +-
 generators/sync-file-system.js  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/generators/async-file-system.js b/generators/async-file-system.js
index 391ecae2..13497096 100644
--- a/generators/async-file-system.js
+++ b/generators/async-file-system.js
@@ -43,7 +43,7 @@ async function *randomFileContents() {
         let result = new ArrayBuffer(numBytes);
         let view = new Uint8Array(result);
         for (let i = 0; i < numBytes; ++i)
-            view[i] = (i + counter) % 255;
+            view[i] = (i + counter) % 256;
         yield new DataView(result);
     }
 }
diff --git a/generators/sync-file-system.js b/generators/sync-file-system.js
index 126b2660..62c1159c 100644
--- a/generators/sync-file-system.js
+++ b/generators/sync-file-system.js
@@ -43,7 +43,7 @@ function *randomFileContents() {
         let result = new ArrayBuffer(numBytes);
         let view = new Uint8Array(result);
         for (let i = 0; i < numBytes; ++i)
-            view[i] = (i + counter) % 255;
+            view[i] = (i + counter) % 256;
         yield new DataView(result);
     }
 };