[llvm-bugs] Issue 9935 in oss-fuzz: llvm/llvm-isel-fuzzer--x86_64-O2: ASSERT: BitPosition <= BitWidth && "BitPosition out of range"

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #2 on issue 9935 by ClusterFuzz-External:  
llvm/llvm-isel-fuzzer--x86_64-O2: ASSERT: BitPosition <= BitWidth  
&& "BitPosition out of range"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9935#c2

ClusterFuzz has detected this issue as fixed in range  
201808170407:201808171642.

Detailed report: https://oss-fuzz.com/testcase?key=5710919983169536

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--x86_64-O2
Fuzz target binary: llvm-isel-fuzzer--x86_64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   BitPosition <= BitWidth && "BitPosition out of range"
   extractShiftForRotate
   DAGCombiner::MatchRotate

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201807300245:201807310248
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201808170407:201808171642

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5710919983169536

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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