From a99fcc7f303ecc8e19e97d17156c283e9ee45a8b Mon Sep 17 00:00:00 2001
From: lichenshuai <lichenshuai@huawei.com>
Date: Fri, 30 Jun 2023 10:02:48 +0800
Subject: [PATCH] =?UTF-8?q?[Bug]:=20AsyncGeneratorResolve=E9=81=87?=
 =?UTF-8?q?=E5=88=B0=E7=A9=BA=E9=98=9F=E5=88=97=E9=97=AE=E9=A2=98?=
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在debug模式下，挂在AsyncGeneratorResolve字节码遇到空队列，
按照ECMA规范分析，执行两次next()后，状态应该为completed且队列应该为空。此时，不需要进入对应逻辑。

Issue: #I7HA9B

Signed-off-by: lichenshuai <lichenshuai@huawei.com>
Change-Id: I6559bd8d60f78341ee6783d636b6d6fa7fe55391
---
 ecmascript/stubs/runtime_stubs-inl.h                 | 4 ++++
 test/moduletest/asyncgenerator/asyncgeneratornext.js | 9 +++++++++
 test/moduletest/asyncgenerator/expect_output.txt     | 1 +
 3 files changed, 14 insertions(+)

diff --git a/ecmascript/stubs/runtime_stubs-inl.h b/ecmascript/stubs/runtime_stubs-inl.h
index b4e2402e71..0952892f1c 100644
--- a/ecmascript/stubs/runtime_stubs-inl.h
+++ b/ecmascript/stubs/runtime_stubs-inl.h
@@ -359,6 +359,10 @@ JSTaggedValue RuntimeStubs::RuntimeAsyncGeneratorResolve(JSThread *thread, JSHan
 
     ASSERT(flag.IsBoolean());
     bool done = flag.IsTrue();
+    if (asyncGeneratorObjHandle->GetAsyncGeneratorState() == JSAsyncGeneratorState::COMPLETED &&
+        TaggedQueue::Cast(asyncGeneratorObjHandle->GetAsyncGeneratorQueue().GetTaggedObject())->Empty()) {
+        return JSTaggedValue::Undefined();
+    }
     return JSAsyncGeneratorObject::AsyncGeneratorResolve(thread, asyncGeneratorObjHandle, valueHandle, done);
 }
 
diff --git a/test/moduletest/asyncgenerator/asyncgeneratornext.js b/test/moduletest/asyncgenerator/asyncgeneratornext.js
index 433f38a9ed..df03f3d52b 100644
--- a/test/moduletest/asyncgenerator/asyncgeneratornext.js
+++ b/test/moduletest/asyncgenerator/asyncgeneratornext.js
@@ -26,8 +26,17 @@ async function *a() {
   print(c);
 }
 
+async function *f() {
+  return 0;
+}
+
 let b = a();
 print("asyncgenerator next start");
 b.next();
 b.next(3);
+
+const g = f();
+g.next();
+g.next();
+print("asyncgenerator double next");
 print("asyncgenerator next end");
\ No newline at end of file
diff --git a/test/moduletest/asyncgenerator/expect_output.txt b/test/moduletest/asyncgenerator/expect_output.txt
index 7582685b9c..db6d77b20f 100644
--- a/test/moduletest/asyncgenerator/expect_output.txt
+++ b/test/moduletest/asyncgenerator/expect_output.txt
@@ -14,6 +14,7 @@
 async generator start
 asyncgenerator next start
 1
+asyncgenerator double next
 asyncgenerator next end
 3
 asyncgenerator return start