[llvm-bugs] Issue 16181 in oss-fuzz: llvm/clangd-fuzzer: ASSERT: Result.ExpandedTokens.back().kind() == tok::eof

[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-2019-08-02
Type: Bug

New issue 16181 by ClusterFuzz-External: llvm/clangd-fuzzer: ASSERT:  
Result.ExpandedTokens.back().kind() == tok::eof
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16181

Detailed report: https://oss-fuzz.com/testcase?key=5652003589455872

Project: llvm
Fuzzer: libFuzzer_llvm_clangd-fuzzer
Fuzz target binary: clangd-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   Result.ExpandedTokens.back().kind() == tok::eof
   clang::syntax::TokenCollector::Builder::build
   clang::syntax::TokenCollector::consume

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201906190239:201906200302

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5652003589455872

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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