[llvm-bugs] Issue 30672 in oss-fuzz: llvm:clang-objc-fuzzer: Stack-overflow in clang::Lexer::Lex

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2021-02-08
Type: Bug

New issue 30672 by ClusterFuzz-External: llvm:clang-objc-fuzzer: Stack-overflow in clang::Lexer::Lex
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30672

Detailed Report: https://oss-fuzz.com/testcase?key=5071104576192512

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

Crash Type: Stack-overflow
Crash Address: 0x7ffc673cfbe8
Crash State:
  clang::Lexer::Lex
  clang::Preprocessor::Lex
  clang::Parser::ParseBlockLiteralExpression
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202102070603:202102080628

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5071104576192512

Issue filed automatically.

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