From 96d305482645f9cf8b7cfaf026448afa644db9bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E5=BF=97=E5=BC=BA?= <652732310@qq.com>
Date: Mon, 18 May 2020 19:14:08 +0800
Subject: [PATCH] add comment

---
 wasm/vm.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wasm/vm.go b/wasm/vm.go
index 2aa3b1f2..9d011d0e 100644
--- a/wasm/vm.go
+++ b/wasm/vm.go
@@ -20,7 +20,8 @@ type (
 		Globals       []uint64
 
 		OperandStack *VirtualMachineOperandStack
-		RuntimeData  interface{}
+		// used to store runtime data per VirtualMachine
+		RuntimeData interface{}
 	}
 
 	NativeFunctionContext struct {