[llvm-bugs] Issue 23833 in oss-fuzz: llvm:clangd-fuzzer: ASSERT: Index < Length && "Invalid index!"

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
CC: kcc at google.com, mascasa at google.com, jdevlieg... at apple.com, igm... at gmail.com, davg at google.com, mitchp at google.com, bigchees... at gmail.com, eneyman at google.com, llvm-b... at lists.llvm.org, jfb at chromium.org, v... at apple.com, mitchphi... at outlook.com, xpl... at gmail.com, akils... at apple.com 
Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2020-07-01
Type: Bug

New issue 23833 by ClusterFuzz-External: llvm:clangd-fuzzer: ASSERT: Index < Length && "Invalid index!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23833

Detailed Report: https://oss-fuzz.com/testcase?key=6480005835259904

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: clangd-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  Index < Length && "Invalid index!"
  clang::format::IndexedTokenSource::getNextToken
  clang::format::UnwrappedLineParser::tryToParseSimpleAttribute
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202005260706:202005270244

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=6480005835259904

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.
When you fix this bug, please
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