Attachment 228345 Details for Bug 258762 – Same repro rewritten for convenience

Same repro rewritten for convenience

zeros.html (text/html), 953 bytes, created by Alex S on 2021-10-02 04:37:21 UTC

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Creator: Alex S

Created: 2021-10-02 04:37:21 UTC

Size: 953 bytes

patch

obsolete

><script>
>const test_slice_length = 20;
>
>function alloc(array_length) {
>  if (array_length < 2) {
>    return null;
>  }
>  try {
>    return new Int32Array(array_length);
>  } catch (error) {
>    if (error instanceof RangeError) {
>      return alloc(array_length / 2);
>    }
>  }
>}
>
>function print(msg) {
>  console.log(msg);
>  if (document) {
>    document.write(msg + '<br>');
>  }
>}
>
>function test(iterations, array_length) {
>
>  let arrays = [];
>
>  for (let i = 0; i < iterations; i++) {
>
>    let a = alloc(array_length);
>    if (a == null) {
>      print('out of memory after ' + i + ' iterations');
>      return true;
>    }
>
>    if (!a.slice(0, test_slice_length).every(n => n == 0)) {
>      print('found a failure case after ' + i + ' iterations: ');
>      print(JSON.stringify(Array.from(a.slice(0, test_slice_length))));
>      return false;
>    }
>
>    arrays.push(a);
>  }
>
>  return true;
>}
>
>if (test(100_000, 1_000)) {
>  document.write('ok');
>}
></script>

<script>
const test_slice_length = 20;

function alloc(array_length) {
  if (array_length < 2) {
    return null;
  }
  try {
    return new Int32Array(array_length);
  } catch (error) {
    if (error instanceof RangeError) {
      return alloc(array_length / 2);
    }
  }
}

function print(msg) {
  console.log(msg);
  if (document) {
    document.write(msg + '<br>');
  }
}

function test(iterations, array_length) {

  let arrays = [];

  for (let i = 0; i < iterations; i++) {

    let a = alloc(array_length);
    if (a == null) {
      print('out of memory after ' + i + ' iterations');
      return true;
    }

    if (!a.slice(0, test_slice_length).every(n => n == 0)) {
      print('found a failure case after ' + i + ' iterations: ');
      print(JSON.stringify(Array.from(a.slice(0, test_slice_length))));
      return false;
    }

    arrays.push(a);
  }

  return true;
}

if (test(100_000, 1_000)) {
  document.write('ok');
}
</script>

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Attachments on bug 258762: 228233 | 228345