[Webkit-unassigned] [Bug 178522] New: Test262: RegExp/property-escapes/character-class.js fails with current RegExp Unicode Properties implementation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=178522

            Bug ID: 178522
           Summary: Test262: RegExp/property-escapes/character-class.js
                    fails with current RegExp Unicode Properties
                    implementation
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msaboff at apple.com

The test262 test JSTests/test262/test/built-ins/RegExp/property-escapes/character-class.js fails with the current implementation of RegExp Unicode Properties.  The failure is:
Exception: Test262Error: Function: /[\p{Hex}-\uFFFF]/u Expected a SyntaxError to be thrown but no exception was thrown at all

The issue is that the test doesn’t allow a built-in property in a character class.  JavaScriptCore specifically allows this.

The spec says that this is disallowed for unicode expressions (https://tc39.github.io/ecma262/#sec-runtime-semantics-characterrangeorunion-abstract-operation).  We need to make this fix in JSC.

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