From 017f88ee99b0fe40221e6af92e0b6a976fbaf2ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Mon, 26 Aug 2019 13:48:40 +0200
Subject: fix: shared queue requires aligned buffer (#2816)

---
 cli/ops/dispatch_json.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'cli/ops/dispatch_json.rs')

diff --git a/cli/ops/dispatch_json.rs b/cli/ops/dispatch_json.rs
index a575aedb3..77d76f39f 100644
--- a/cli/ops/dispatch_json.rs
+++ b/cli/ops/dispatch_json.rs
@@ -37,7 +37,10 @@ fn serialize_result(
     Ok(v) => json!({ "ok": v, "promiseId": promise_id }),
     Err(err) => json!({ "err": json_err(err), "promiseId": promise_id }),
   };
-  let vec = serde_json::to_vec(&value).unwrap();
+  let mut vec = serde_json::to_vec(&value).unwrap();
+  debug!("JSON response pre-align, len={}", vec.len());
+  // Align to 32bit word, padding with the space character.
+  vec.resize((vec.len() + 3usize) & !3usize, b' ');
   vec.into_boxed_slice()
 }
 
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