[llvm-bugs] Issue 27385 in oss-fuzz: llvm:clangd-fuzzer: ASSERT: (uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2020-11-10
Type: Bug

New issue 27385 by ClusterFuzz-External: llvm:clangd-fuzzer: ASSERT: (uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27385

Detailed Report: https://oss-fuzz.com/testcase?key=5759903620399104

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: clangd-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  (uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen
  clang::ASTWriter::WriteIdentifierTable
  clang::ASTWriter::WriteASTCore
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201901220414:201902020421

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5759903620399104

Issue filed automatically.

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