[llvm-bugs] Issue 3681 in oss-fuzz: llvm/llvm-isel-fuzzer--aarch64-O2: ASSERT: ShiftAmt <= BitWidth && "Invalid shift amount"

[monor… via monorail via llvm-bugs]

Comment #2 on issue 3681 by  
monor... at clusterfuzz-external.iam.gserviceaccount.com:  
llvm/llvm-isel-fuzzer--aarch64-O2: ASSERT: ShiftAmt <= BitWidth && "Invalid  
shift amount"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3681#c2

ClusterFuzz has detected this issue as fixed in range  
201711140614:201711141648.

Detailed report: https://oss-fuzz.com/testcase?key=4605473736097792

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--aarch64-O2
Fuzz target binary: llvm-isel-fuzzer--aarch64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   ShiftAmt <= BitWidth && "Invalid shift amount"
   llvm::BasicAAResult::GetLinearExpression
   llvm::BasicAAResult::DecomposeGEPExpression

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201710160455:201710190451
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201711140614:201711141648

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=4605473736097792

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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