nodejs
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‎src/env-inl.h‎
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+11-1Lines changed: 11 additions & 1 deletion b/Collapse file
‎src/env-inl.h‎
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+11-1Lines changed: 11 additions & 1 deletion
diff --git a/Collapse file
‎test/parallel/test-async-hooks-vm-gc.js‎
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+15Lines changed: 15 additions & 0 deletions b/Collapse file
‎test/parallel/test-async-hooks-vm-gc.js‎
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+15Lines changed: 15 additions & 0 deletions
@@ -104,6 +104,11 @@ inline void AsyncHooks::SetJSPromiseHooks(v8::Local<v8::Function> init,
   js_promise_hooks_[2].Reset(env()->isolate(), after);
   js_promise_hooks_[3].Reset(env()->isolate(), resolve);
   for (auto it = contexts_.begin(); it != contexts_.end(); it++) {
+    if (it->IsEmpty()) {
+      it = contexts_.erase(it);
+      it--;
+      continue;
+    }
     PersistentToLocal::Weak(env()->isolate(), *it)
         ->SetPromiseHooks(init, before, after, resolve);
   }
@@ -256,8 +261,13 @@ inline void AsyncHooks::RemoveContext(v8::Local<v8::Context> ctx) {
   v8::Isolate* isolate = env()->isolate();
   v8::HandleScope handle_scope(isolate);
   for (auto it = contexts_.begin(); it != contexts_.end(); it++) {
+    if (it->IsEmpty()) {
+      it = contexts_.erase(it);
+      it--;
+      continue;
+    }
     v8::Local<v8::Context> saved_context =
-      PersistentToLocal::Weak(env()->isolate(), *it);
+      PersistentToLocal::Weak(isolate, *it);
     if (saved_context == ctx) {
       it->Reset();
       contexts_.erase(it);
 
@@ -0,0 +1,15 @@
+// Flags: --expose-gc
+'use strict';
+
+require('../common');
+const asyncHooks = require('async_hooks');
+const vm = require('vm');
+
+// This is a regression test for https://github.com/nodejs/node/issues/39019
+//
+// It should not segfault.
+
+const hook = asyncHooks.createHook({ init() {} }).enable();
+vm.createContext();
+globalThis.gc();
+hook.disable();