[llvm-bugs] Issue 15726 in oss-fuzz: llvm/clang-fuzzer: Null-dereference READ in llvm::llvm_unreachable_internal

[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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akils... at apple.com
Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer  
Engine-libfuzzer OS-Linux Proj-llvm Reported-2019-07-10
Type: Bug

New issue 15726 by ClusterFuzz-External: llvm/clang-fuzzer:  
Null-dereference READ in llvm::llvm_unreachable_internal
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15726

Detailed report: https://oss-fuzz.com/testcase?key=5079555997433856

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:
   llvm::llvm_unreachable_internal
   clang::Sema::ActOnComment
   ActionCommentHandler::HandleComment

Sanitizer: memory (MSAN)

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5079555997433856

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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