[llvm-bugs] Issue 8692 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-instcombine: ASSERT: SafeDummyConstant && "Undef constant vector was not simplified?"

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #2 on issue 8692 by ClusterFuzz-External:  
llvm/llvm-opt-fuzzer--x86_64-instcombine: ASSERT: SafeDummyConstant  
&& "Undef constant vector was not simplified?"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8692#c2

ClusterFuzz has detected this issue as fixed in range  
201806020033:201806030759.

Detailed report: https://oss-fuzz.com/testcase?key=5537562146897920

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:
   SafeDummyConstant && "Undef constant vector was not simplified?"
   llvm::InstCombiner::SimplifyVectorOp
   llvm::InstCombiner::visitAdd

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201806010716:201806020033
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201806020033:201806030759

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5537562146897920

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
more information.

If you suspect that the result above is incorrect, try re-doing that job on  
the test case report page.

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