Handle errors in async calls

ethereumjs · Aug 21, 2017 · f4122b0 · f4122b0
1 parent 5b3593e
commit f4122b0
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/runCode.js b/lib/runCode.js
@@ -173,14 +173,17 @@ module.exports = function (opts, cb) {
       // create a callback for async opFunc
       if (opInfo.async) {
         args.push(function (err, result) {
+          if (err) return cb(err)
+
           // save result to the stack
           if (result) {
             // NOTE: Ensure that every stack item is padded to 256 bits.
             //       This should be done at every opcode in the future.
             result = utils.setLengthLeft(result, 32)
             runState.stack.push(result)
           }
-          cb(err)
+
+          cb()
         })
       }