Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/8d0942499cf4bca74b58c675d7270c8b7ce95abb ([Intl] Validate u extension type).

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.

ClusterFuzz has detected this issue as fixed in range 58505:58506.

Detailed report: https://clusterfuzz.com/testcase?key=6556094618664960

Fuzzer: lokihardt_jshitter
Job Type: linux_msan_d8
Platform Id: linux

Crash Type: Ill
Crash Address: 0x556946a0e323
Crash State:
  v8::internal::Intl::ToLanguageTag
  v8::internal::Intl::CanonicalizeLanguageTag
  v8::internal::Intl::CanonicalizeLocaleList
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=58172:58173
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=58505:58506

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6556094618664960

See https://www.chromium.org/developers/testing/memorysanitizer#TOC-Reproducing-ClusterFuzz-Bugs for instructions to reproduce this bug locally.

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