[llvm-bugs] Issue 16571 in oss-fuzz: llvm:llvm-opt-fuzzer--x86_64-instcombine: ASSERT: use_empty() && "Uses remain when a value is destroyed!"

[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-2019-08-20
Type: Bug

New issue 16571 by ClusterFuzz-External:  
llvm:llvm-opt-fuzzer--x86_64-instcombine: ASSERT: use_empty() && "Uses  
remain when a value is destroyed!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16571

Detailed Report: https://oss-fuzz.com/testcase?key=5636038474596352

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-opt-fuzzer--x86_64-instcombine
Job Type: libfuzzer_msan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   use_empty() && "Uses remain when a value is destroyed!"
   llvm::Value::~Value
   llvm::DenseMapBase<llvm::DenseMap<llvm::Type*,  
std::__1::unique_ptr<llvm::UndefV

Sanitizer: memory (MSAN)

Crash Revision:  
https://oss-fuzz.com/revisions?job=libfuzzer_msan_llvm&revision=201906300300

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5636038474596352

Issue filed automatically.

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

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