From abde97b26d21b2e01e36e475f2557a78d4a6cda6 Mon Sep 17 00:00:00 2001
From: Mingyang <mingyang1021@outlook.com>
Date: Thu, 24 Jul 2025 14:21:34 +0800
Subject: [PATCH] Fix missing memberexpression object tstype

Https://gitee.com/openharmony/arkcompiler_ets_frontend/issues/icvuii?from=project-issue
Reason:
The compiler crashed in `unboxlowering` due to `mexpr->object()->tstype()` being null,
Specifically when accessing enum members in annotation default values like:
@interface a { field: myenum = myenum.value1 }
The type checker skipped type resolution for the `object` part of `memberexpression`
Under certain conditions, causing a null dereference in unboxlowering.
Description:
In `etsanalyzer::check(ir::memberexpression *expr)`, if `expr->tstype()`
Is not `nullptr`, it will directly `return expr->tstype()` and leave
`object()->tstype()` as `nullptr`. therefore, in `etsanalyzer.cpp:3095 processrequiredfields`, clone's tstype should be cleaned by `clone->cleancheckinformation()`.
Tests:
Ninja tests passed
Tests/tests-u-runner/runner.sh --ets-cts --show-progress --build-dir x64.release --processes=all passed
Tests/tests-u-runner/runner.sh --ets-func-tests --show-progress --build-dir x64.release --processes=all passed
Tests/tests-u-runner/runner.sh --astchecker --show-progress --build-dir x64.release --processes=all passed
Tests/tests-u-runner/runner.sh --ets-runtime --show-progress --build-dir x64.release --processes=all passed
Tests/tests-u-runner/runner.sh --parser --no-js --show-progress --build-dir x64.release --processes=all passed
Signed-off-by: mingyang <mingyang1021@outlook.com>
---
 ets2panda/checker/ETSAnalyzer.cpp             |  1 +
 ...otation_MemberExpression_Object_TsType.ets | 27 +++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 ets2panda/test/runtime/ets/Annotation_MemberExpression_Object_TsType.ets

diff --git a/ets2panda/checker/ETSAnalyzer.cpp b/ets2panda/checker/ETSAnalyzer.cpp
index ab87ed9b46..32042f6b99 100644
--- a/ets2panda/checker/ETSAnalyzer.cpp
+++ b/ets2panda/checker/ETSAnalyzer.cpp
@@ -3283,6 +3283,7 @@ static void ProcessRequiredFields(ArenaUnorderedMap<util::StringView, ir::ClassP
         }
         // SUPPRESS_CSA_NEXTLINE(alpha.core.AllocatorETSCheckerHint)
         auto *clone = entry.second->Clone(checker->Allocator(), st);
+        clone->CleanCheckInformation();
         st->AddProperty(clone);
         clone->Check(checker);
     }
diff --git a/ets2panda/test/runtime/ets/Annotation_MemberExpression_Object_TsType.ets b/ets2panda/test/runtime/ets/Annotation_MemberExpression_Object_TsType.ets
new file mode 100644
index 0000000000..d1ec3fc071
--- /dev/null
+++ b/ets2panda/test/runtime/ets/Annotation_MemberExpression_Object_TsType.ets
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace MyNamespace {
+  export enum MyEnum {
+    EnumField1 = 0,
+    EnumField2 = 1
+  }
+}
+@interface ClassAnnotation {
+  field: MyNamespace.MyEnum = MyNamespace.MyEnum.EnumField1;
+}
+@ClassAnnotation
+class MyClass {
+}
-- 
Gitee