mirror of https://github.com/tc39/test262.git
47 lines
1.7 KiB
JavaScript
47 lines
1.7 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-performeval
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description: >
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Expression is not evaluated prior to verification of "super" binding
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info: |
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[...]
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4. Let inMethod be false.
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5. Let inConstructor be false.
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6. If thisEnvRec has a [[HomeObject]] field, then
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a. Let inMethod be true.
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b. If thisEnvRec.[[FunctionObject]] has a [[Construct]] field, let
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inConstructor be true.
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7. Let script be the ECMAScript code that is the result of parsing x,
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interpreted as UTF-16 encoded Unicode text as described in 6.1.4, for the
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goal symbol Script. If inMethod is false, additional early error rules
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from 18.2.1.1.1 are applied. If inConstructor is false, additional early
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error rules from 18.2.1.1.2 are applied. If the parse fails, throw a
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SyntaxError exception. If any early errors are detected, throw a
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SyntaxError or a ReferenceError exception, depending on the type of the
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error (but see also clause 16). Parsing and early error detection may be
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interweaved in an implementation dependent manner.
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18.2.1.1.1 Additional Early Error Rules for Eval Outside Methods
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ScriptBody : StatementList
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- It is a Syntax Error if StatementList contains super.
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features: [super]
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---*/
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var evaluated = false;
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function f() {
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// Early errors restricting the usage of SuperProperty necessitate the use of
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// `eval`.
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try {
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eval('super[evaluated = true];');
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// Evaluation of SuperProperty is expected to fail in this context, but that
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// behavior is tested elsewhere, so the error is discarded.
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} catch (_) {}
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}
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f();
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assert.sameValue(evaluated, false);
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