Mark rejected promises with no reactions as handled

Author: saghul

quickjs.c

@@ -50278,6 +50278,10 @@ static void fulfill_or_reject_promise(JSContext *ctx, JSValueConst promise,
         }
     }
 
+    // If the promise has no reactions, mark it as handled.
+    if (list_empty(&s->promise_reactions[is_reject]))
+        s->is_handled = true;
+
     list_for_each_safe(el, el1, &s->promise_reactions[is_reject]) {
         rd = list_entry(el, JSPromiseReactionData, link);
         args[0] = rd->resolving_funcs[0];

tests/bug39/3.js

@@ -0,0 +1,7 @@
+/*---
+flags: [qjs:track-promise-rejections]
+---*/
+
+const promise = Promise.reject('reject')
+const error = await Promise.resolve().then(() => promise).catch(e => e)
+print('Got this error:', error)

tests/bug39/4.js

@@ -0,0 +1,6 @@
+/*---
+flags: [qjs:track-promise-rejections]
+---*/
+
+const promise = Promise.reject('reject')
+print(promise)