[llvm-bugs] Issue 15910 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-instcombine: ASSERT: CastInst::castIsValid(opc, C, Ty) && "Invalid constantexpr cast!"

[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-2019-07-16
Type: Bug

New issue 15910 by ClusterFuzz-External:  
llvm/llvm-opt-fuzzer--x86_64-instcombine: ASSERT:  
CastInst::castIsValid(opc, C, Ty) && "Invalid constantexpr cast!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15910

Detailed report: https://oss-fuzz.com/testcase?key=5765804714360832

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-opt-fuzzer--x86_64-instcombine
Fuzz target binary: llvm-opt-fuzzer--x86_64-instcombine
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   CastInst::castIsValid(opc, C, Ty) && "Invalid constantexpr cast!"
   llvm::ConstantExpr::getCast
   BitcodeReader::parseConstants

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201712190608:201712210617

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5765804714360832

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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