Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: c228e7cdd6379c257cdcfe651bb492b9eadb816b
https://github.com/WebKit/WebKit/commit/c228e7cdd6379c257cdcfe651bb492b9eadb816b
Author: Yijia Huang <yijia_hu...@apple.com>
Date: 2022-11-11 (Fri, 11 Nov 2022)
Changed paths:
A JSTests/stress/destructuring-for-in-of.js
M Source/JavaScriptCore/parser/Parser.cpp
Log Message:
-----------
TypeError is expected when reassigning to `const` during destructuring in for
statement
https://bugs.webkit.org/show_bug.cgi?id=247432
rdar://102064568
Reviewed by Yusuke Suzuki.
Running this JavaScript program should throw TypeError.
```
class x { static #y = { x = 0 } = 0 ; }
```
V8
```
class x { static #y = { x = 0 } = 0 ; }
^
TypeError: Assignment to constant variable.
```
GraalJS
```
TypeError: Assignment to constant "x"
```
To fix this, we should use AssignmentContext::AssignmentExpression
to construct destructuring pattern in for...in/of statement. In this case,
symbolTablePut will check for read-only variable without ignoring.
* JSTests/stress/destructuring-for-in-of.js: Added.
(shouldThrow):
* Source/JavaScriptCore/parser/Parser.cpp:
(JSC::Parser<LexerType>::parseForStatement):
Canonical link: https://commits.webkit.org/256580@main
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