[llvm-bugs] Issue 24830 in oss-fuzz: llvm:clang-objc-fuzzer: ASSERT: Val && "isa<> used on a null pointer"

[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-2020-08-12
Type: Bug

New issue 24830 by ClusterFuzz-External: llvm:clang-objc-fuzzer: ASSERT: Val && "isa<> used on a null pointer"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24830

Detailed Report: https://oss-fuzz.com/testcase?key=5664329198993408

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

Crash Type: ASSERT
Crash Address: 
Crash State:
  Val && "isa<> used on a null pointer"
  clang::Parser::ParseClassSpecifier
  clang::Parser::ParseDeclarationSpecifiers
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202006090257:202006100259

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5664329198993408

Issue filed automatically.

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