ClusterFuzz has detected this issue as fixed in range 575586:575587.

Detailed report: https://clusterfuzz.com/testcase?key=5422860148146176

Fuzzer: mbarbella_webcomponents
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  count <= MaxElementCountInBackingStore<T>() in partition_allocator.h
  blink::HarfBuzzShaper::CommitGlyphs
  blink::HarfBuzzShaper::ExtractShapeResults
  
Sanitizer: undefined (UBSAN)

Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=575586:575587

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5422860148146176

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 5422860148146176 is verified as fixed, so closing issue as verified.

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