Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/0c296cb229c36b4cbfe80ce5e56089c1e8b378e7 ([turbofan] Initial support to compute NumberAdd/NumberSubtract in Word64.).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.

The following revision refers to this bug:
  https://chromium.googlesource.com/v8/v8.git/+/852a8d35b97eedfc8c20e896e8f067365362547e

commit 852a8d35b97eedfc8c20e896e8f067365362547e
Author: Benedikt Meurer <bmeurer@chromium.org>
Date: Sun Sep 30 09:07:15 2018

[turbofan] Add missing Word64->Bit support.

The representation changer was lacking support for directly converting
Word64 values to Bit representation.

Bug:  chromium:890243 , v8:4153, v8:7881, v8:8171, v8:8178
Change-Id: I5fa31716c7b2b10ad00dc31d5035a1ada152661c
Reviewed-on: https://chromium-review.googlesource.com/1251551
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56304}
[modify] https://crrev.com/852a8d35b97eedfc8c20e896e8f067365362547e/src/compiler/representation-change.cc
[add] https://crrev.com/852a8d35b97eedfc8c20e896e8f067365362547e/test/mjsunit/regress/regress-crbug-890243.js

ClusterFuzz has detected this issue as fixed in range 56303:56304.

Detailed report: https://clusterfuzz.com/testcase?key=5813222157058048

Fuzzer: ochang_js_fuzzer
Job Type: linux_ubsan_vptr_d8
Platform Id: linux

Crash Type: Ill
Crash Address: 0x5607bf79d86e
Crash State:
  v8::internal::compiler::RepresentationChanger::TypeError
  v8::internal::compiler::RepresentationChanger::GetBitRepresentationFor
  v8::internal::compiler::RepresentationSelector::ConvertInput
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_d8&range=55936:55937
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_d8&range=56303:56304

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5813222157058048

See https://github.com/google/clusterfuzz-tools for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5813222157058048 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.