[llvm-bugs] Issue 8861 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-strength_reduce: ASSERT: !BaseReg->isZero() && "Zero allocated in a base register!"

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #2 on issue 8861 by ClusterFuzz-External:  
llvm/llvm-opt-fuzzer--x86_64-strength_reduce: ASSERT: !BaseReg->isZero()  
&& "Zero allocated in a base register!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8861#c2

ClusterFuzz has detected this issue as fixed in range  
201806130804:201806142218.

Detailed report: https://oss-fuzz.com/testcase?key=6195708003614720

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

Crash Type: ASSERT
Crash Address:
Crash State:
   !BaseReg->isZero() && "Zero allocated in a base register!"
   LSRInstance::InsertFormula
   LSRInstance::GenerateAllReuseFormulae

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201806110750:201806120754
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201806130804:201806142218

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=6195708003614720

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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