[llvm-bugs] Issue 15682 in oss-fuzz: llvm/clang-fuzzer: Null-dereference READ in clang::SourceManager::getFileIDLoaded

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
CC: k...@google.com, masc...@google.com, jdevlieg...@apple.com,  
igm...@gmail.com, mit...@google.com, bigchees...@gmail.com,  
eney...@google.com, llvm-b...@lists.llvm.org, j...@chromium.org,  
v...@apple.com, mitchphi...@outlook.com, xpl...@gmail.com,  
akils...@apple.com
Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer  
Engine-libfuzzer OS-Linux Proj-llvm Reported-2019-07-06
Type: Bug
New issue 15682 by ClusterFuzz-External: llvm/clang-fuzzer:  
Null-dereference READ in clang::SourceManager::getFileIDLoaded
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15682

Detailed report: https://oss-fuzz.com/testcase?key=5737627161985024

Project: llvm
Fuzzer: libFuzzer_llvm_clang-fuzzer
Fuzz target binary: clang-fuzzer
Job Type: libfuzzer_msan_llvm
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  clang::SourceManager::getFileIDLoaded
  clang::SourceManager::isAtEndOfImmediateMacroExpansion
  clang::Lexer::isAtEndOfMacroExpansion

Sanitizer: memory (MSAN)

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5737627161985024

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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