From ba71fe8bd306a562d4888e5737caeca975a12a07 Mon Sep 17 00:00:00 2001
From: Anatoli Papirovski <apapirovski@mac.com>
Date: Thu, 31 May 2018 12:10:07 +0200
Subject: [PATCH] timers: check can_call_into_js in Immediates

Prevent an infinite loop if it's not possible to call into JS.

PR-URL: https://github.com/nodejs/node/pull/21057
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
---
 src/env.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/env.cc b/src/env.cc
index 32ffd402da049a..7865ba95404df5 100644
--- a/src/env.cc
+++ b/src/env.cc
@@ -457,6 +457,9 @@ void Environment::CheckImmediate(uv_check_t* handle) {
 
   env->RunAndClearNativeImmediates();
 
+  if (!env->can_call_into_js())
+    return;
+
   do {
     MakeCallback(env->isolate(),
                  env->process_object(),
@@ -464,7 +467,7 @@ void Environment::CheckImmediate(uv_check_t* handle) {
                  0,
                  nullptr,
                  {0, 0}).ToLocalChecked();
-  } while (env->immediate_info()->has_outstanding());
+  } while (env->immediate_info()->has_outstanding() && env->can_call_into_js());
 
   if (env->immediate_info()->ref_count() == 0)
     env->ToggleImmediateRef(false);