[llvm-bugs] Issue 16771 in oss-fuzz: llvm:clang-fuzzer: Null-dereference READ in clang::TokenLexer::ExpandFunctionArguments

ClusterFuzz-External via monorail via llvm-bugs llvm-bugs at lists.llvm.org
Mon Aug 26 02:02:14 PDT 2019


Status: New
Owner: ----
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Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer  
Engine-libfuzzer OS-Linux Proj-llvm Reported-2019-08-26
Type: Bug

New issue 16771 by ClusterFuzz-External: llvm:clang-fuzzer:  
Null-dereference READ in clang::TokenLexer::ExpandFunctionArguments
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16771

Detailed Report: https://oss-fuzz.com/testcase?key=5107808558645248

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

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
   clang::TokenLexer::ExpandFunctionArguments
   clang::TokenLexer::Init
   clang::Preprocessor::EnterMacro

Sanitizer: memory (MSAN)

Crash Revision:  
https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&revision=201906300300

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5107808558645248

Issue filed automatically.

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

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