[llvm-bugs] Issue 16435 in oss-fuzz: llvm:llvm-isel-fuzzer--aarch64-gisel: ASSERT: WideTy.isVector() && "can only unmerge from vector types!"

[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-2019-08-14
Type: Bug

New issue 16435 by ClusterFuzz-External:  
llvm:llvm-isel-fuzzer--aarch64-gisel: ASSERT: WideTy.isVector() && "can  
only unmerge from vector types!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16435

Detailed Report: https://oss-fuzz.com/testcase?key=5695207588233216

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-isel-fuzzer--aarch64-gisel
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   WideTy.isVector() && "can only unmerge from vector types!"
   AArch64InstructionSelector::select
   llvm::InstructionSelect::runOnMachineFunction

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201908132221:201908140336

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5695207588233216

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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