[llvm-bugs] Issue 16605 in oss-fuzz: llvm:llvm-isel-fuzzer--x86_64-O2: Abrt in llvm::llvm_unreachable_internal

[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-2019-08-22
Type: Bug

New issue 16605 by ClusterFuzz-External: llvm:llvm-isel-fuzzer--x86_64-O2:  
Abrt in llvm::llvm_unreachable_internal
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16605

Detailed Report: https://oss-fuzz.com/testcase?key=5641614776598528

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-isel-fuzzer--x86_64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x000000000001
Crash State:
   llvm::llvm_unreachable_internal
   X86FlagsCopyLoweringPass::runOnMachineFunction
   llvm::MachineFunctionPass::runOnFunction

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201903270300:201904052014

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5641614776598528

Issue filed automatically.

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

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