[llvm-bugs] Issue 16308 in oss-fuzz: llvm/clang-fuzzer: Stack-overflow in clang::Lexer::LexIdentifier

[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, mitchp at google.com, bigchees... at gmail.com,  
eneyman at google.com, llvm-b... at lists.llvm.org, jfb at chromium.org,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer OS-Linux Proj-llvm Reported-2019-08-09
Type: Bug

New issue 16308 by ClusterFuzz-External: llvm/clang-fuzzer: Stack-overflow  
in clang::Lexer::LexIdentifier
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16308

Detailed report: https://oss-fuzz.com/testcase?key=5646990272102400

Project: llvm
Fuzzing engine: libFuzzer
Fuzz target: clang-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Stack-overflow
Crash Address: 0x7ffe262f6ff8
Crash State:
   clang::Lexer::LexIdentifier
   clang::Lexer::LexTokenInternal
   clang::Lexer::Lex

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201908070326:201908080323

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5646990272102400

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
instructions to reproduce this bug locally.

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