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[Bug]: Fix union member method reference error
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#ICXID7
likaizheng
Opened this issue
2025-09-11 14:26
### 发生了什么问题？ interface AType { f(): void; } interface BType { f(): void; } declare const x: AType | BType; (x as AType | BType).f; Method reference on union member expression was not downgraded, causing a crash. ### 期望行为是什么？ Fatal error: Failed to emit binary data: Field test.%%union_prop-AType|BType.f has undefined type ### 如何复现该缺陷 interface AType { f(): void; } interface BType { f(): void; } declare const x: AType | BType; (x as AType | BType).f; ### 其他补充信息 ### 版本或分支信息 - [x] master - [ ] 5.1-Release - [ ] 5.0-Release - [ ] 5.0-Beta1 - [ ] Release 4.1 - [ ] Release 4.0 - [ ] Release 3.2
### 发生了什么问题？ interface AType { f(): void; } interface BType { f(): void; } declare const x: AType | BType; (x as AType | BType).f; Method reference on union member expression was not downgraded, causing a crash. ### 期望行为是什么？ Fatal error: Failed to emit binary data: Field test.%%union_prop-AType|BType.f has undefined type ### 如何复现该缺陷 interface AType { f(): void; } interface BType { f(): void; } declare const x: AType | BType; (x as AType | BType).f; ### 其他补充信息 ### 版本或分支信息 - [x] master - [ ] 5.1-Release - [ ] 5.0-Release - [ ] 5.0-Beta1 - [ ] Release 4.1 - [ ] Release 4.0 - [ ] Release 3.2
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