[llvm-bugs] Issue 21360 in oss-fuzz: llvm:clang-fuzzer: Stack-overflow in clang::Lexer::Lex

[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-2020-03-24
Type: Bug

New issue 21360 by ClusterFuzz-External: llvm:clang-fuzzer: Stack-overflow in clang::Lexer::Lex
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21360

Detailed Report: https://oss-fuzz.com/testcase?key=5747200404750336

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

Crash Type: Stack-overflow
Crash Address: 0x7ffccd2a2888
Crash State:
  clang::Lexer::Lex
  clang::Preprocessor::Lex
  clang::Parser::ParseParenExpression
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201902260412:201902270426

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5747200404750336

Issue filed automatically.

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