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emit/kernel: 可写 builtin 全局标识符写双写全局属性,三常量描述符对齐规范 c:false,受限词法名集补 eval
- 谓词注册表化:targets_readonly_builtin 解析条件抽公共助手,新增 targets_writable_builtin / is_writable_builtin_global(BUILTIN_GLOBALS 减只读三常量派生,不复制名单)+ 只读/可写划分漂移守卫单测 - 12 个赋值族写点(简单/复合/更新/逻辑赋值、解构两臂、for-in/for-of 标识符目标)补双写臂:STORE_VAR 后 0x98 同步全局对象属性(既有可写 属性原地更值、保 e/c 位),裸读镜像与 globalThis 反射不失步 - for-in 头 tier 写点移除 builtin 名例外:可写 builtin 名迭代键照规范 覆写全局属性(三常量仍由拦截臂跳过) - 三常量(undefined/NaN/Infinity)全局描述符 configurable 翻正为 false:delete 拒绝、属性保留,描述符读同步 - 脚本顶层受限词法名集 3→4(补 eval,静态受限臂):let/const/class eval 顶层声明编译期 SyntaxError - 配套钉:7 处既有钉随 c 位翻正 + 2 枚 for-in/eval 形态钉反转,新增 global_builtin_writable_tests(16 钉:双写六形态 + 遮蔽/strict/eval/ 宿主名面) test262 子集:built-ins/global 29/29、三常量族 20/20、11.13.1-4 7/7、 assignmenttargettype plain 8/8 全绿;language/global-code 17 失败文件 双树单跑一致(pre-existing);annexB assignmenttargettype 7 个 parse error 为既有解析器缺口
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@@ -1,6 +1,6 @@
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//! 内置全局属性描述符测试:规范要求全局构造器/命名空间对象属性
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//! enumerable=false(不泄漏进 Object.keys(globalThis) / for-in),
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//! 全局 NaN/undefined/Infinity 三常量不可写不可枚举可配置。
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//! enumerable=false(不泄漏进 Object.keys(globalThis) / for-in)且可写可配置,
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//! 全局 NaN/undefined/Infinity 三常量不可写不可枚举不可配置。
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use std::sync::Arc;
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@@ -63,11 +63,11 @@ fn for_in_global_this_excludes_builtins() {
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}
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#[test]
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fn nan_undefined_infinity_are_non_writable_configurable() {
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fn nan_undefined_infinity_are_non_writable_non_configurable() {
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for name in ["NaN", "undefined", "Infinity"] {
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let src = format!(
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"var d = Object.getOwnPropertyDescriptor(globalThis, '{name}'); \
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d.writable === false && d.enumerable === false && d.configurable === true"
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d.writable === false && d.enumerable === false && d.configurable === false"
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);
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eval_truthy(&src);
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}
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