tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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symbol-for-index-throws-agent.js (3101B)

      1 // |reftest| shell-option(--setpref=atomics_wait_async) skip-if(!this.hasOwnProperty('SharedArrayBuffer')||!this.hasOwnProperty('Atomics')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('arm64-simulator'))||!xulRuntime.shell) async -- SharedArrayBuffer,Atomics is not enabled unconditionally, ARM64 Simulator cannot emulate atomics, requires shell-options
      2 // Copyright (C) 2020 Rick Waldron. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 /*---
      5 esid: sec-atomics.waitasync
      6 description: >
      7  Throws a TypeError if index arg can not be converted to an Integer
      8 info: |
      9  Atomics.waitAsync( typedArray, index, value, timeout )
     10 
     11  1. Return DoWait(async, typedArray, index, value, timeout).
     12 
     13  DoWait ( mode, typedArray, index, value, timeout )
     14 
     15  2. Let i be ? ValidateAtomicAccess(typedArray, index).
     16 
     17  ValidateAtomicAccess( typedArray, requestIndex )
     18 
     19  2. Let accessIndex be ? ToIndex(requestIndex).
     20 
     21  ToIndex ( value )
     22 
     23  2. Else,
     24    a. Let integerIndex be ? ToInteger(value).
     25 
     26  ToInteger(value)
     27 
     28  1. Let number be ? ToNumber(argument).
     29 
     30    Symbol --> Throw a TypeError exception.
     31 
     32 flags: [async]
     33 includes: [atomicsHelper.js]
     34 features: [Atomics.waitAsync, SharedArrayBuffer, Symbol, Symbol.toPrimitive, TypedArray, Atomics, BigInt, arrow-function, async-functions]
     35 ---*/
     36 assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
     37 const RUNNING = 1;
     38 
     39 $262.agent.start(`
     40  const poisonedValueOf = {
     41    valueOf() {
     42      throw new Test262Error('should not evaluate this code');
     43    }
     44  };
     45 
     46  const poisonedToPrimitive = {
     47    [Symbol.toPrimitive]() {
     48      throw new Test262Error('should not evaluate this code');
     49    }
     50  };
     51 
     52  $262.agent.receiveBroadcast(function(sab) {
     53    const i64a = new BigInt64Array(sab);
     54    Atomics.add(i64a, ${RUNNING}, 1n);
     55 
     56    let status1 = '';
     57    let status2 = '';
     58 
     59    try {
     60      Atomics.waitAsync(i64a, Symbol('1'), poisonedValueOf, poisonedValueOf);
     61    } catch (error) {
     62      status1 = 'A ' + error.name;
     63    }
     64    try {
     65      Atomics.waitAsync(i64a, Symbol('2'), poisonedToPrimitive, poisonedToPrimitive);
     66    } catch (error) {
     67      status2 = 'B ' + error.name;
     68    }
     69 
     70    $262.agent.report(status1);
     71    $262.agent.report(status2);
     72    $262.agent.leaving();
     73  });
     74 `);
     75 
     76 const i64a = new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4));
     77 
     78 $262.agent.safeBroadcastAsync(i64a, RUNNING, 1n).then(async agentCount => {
     79  assert.sameValue(agentCount, 1n, 'The value of `agentCount` is 1n');
     80 
     81  assert.sameValue(
     82    await $262.agent.getReportAsync(),
     83    'A TypeError',
     84    '(await $262.agent.getReportAsync()) resolves to the value "A TypeError"'
     85  );
     86 
     87  assert.sameValue(
     88    await $262.agent.getReportAsync(),
     89    'B TypeError',
     90    '(await $262.agent.getReportAsync()) resolves to the value "B TypeError"'
     91  );
     92 
     93  assert.sameValue(
     94    Atomics.notify(i64a, 0),
     95    0,
     96    'Atomics.notify(new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)), 0) must return 0'
     97  );
     98 }).then($DONE, $DONE);