Detailed report: https://clusterfuzz.com/testcase?key=5067350122561536

Fuzzer: ochang_js_fuzzer
Job Type: linux_ubsan_d8
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  v8::internal::RegExpQuantifier::RegExpQuantifier
  v8::internal::RegExpBuilder::AddQuantifierToAtom
  v8::internal::RegExpParser::ParseDisjunction
  
Sanitizer: undefined (UBSAN)

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5067350122561536

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.