contextify: fix ContextifyContext leak

Apparently, context->Global() won't be destroyed if the context itself
isn't marked as weak and independent.

Also, the weakness flag should be cleared once the weak callback is
executed, otherwise we'll get crashes in Debug builds.

fix #6115 and #6201

1 files changed, 7 insertions, 0 deletions

diff --git a/test/pummel/test-vm-memleak.js b/test/pummel/test-vm-memleak.js
index e0b087d81b..2abedc297b 100644
--- a/test/pummel/test-vm-memleak.js
+++ b/test/pummel/test-vm-memleak.js
@@ -38,9 +38,16 @@ var interval = setInterval(function() {
   if (Date.now() - start > 5 * 1000) {
     // wait 10 seconds.
     clearInterval(interval);
+
+    testContextLeak();
   }
 }, 1);
 
+function testContextLeak() {
+  for (var i = 0; i < 1000; i++)
+    require('vm').createContext({});
+}
+
 process.on('exit', function() {
   console.error('max mem: %dmb', Math.round(maxMem / (1024 * 1024)));
   // make sure we stay below 100mb