[llvm-bugs] Issue 12848 in oss-fuzz: llvm/llvm-isel-fuzzer--aarch64-gisel: ASSERT: mutationIsSane(Rule, Query, Mutation) && "legality mutation invalid for match"

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #2 on issue 12848 by ClusterFuzz-External:  
llvm/llvm-isel-fuzzer--aarch64-gisel: ASSERT: mutationIsSane(Rule, Query,  
Mutation) && "legality mutation invalid for match"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12848#c2

ClusterFuzz has detected this issue as fixed in range  
201902040424:201902060426.

Detailed report: https://oss-fuzz.com/testcase?key=5713452666978304

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

Crash Type: ASSERT
Crash Address:
Crash State:
   mutationIsSane(Rule, Query, Mutation) && "legality mutation invalid for  
match"
   llvm::LegalizeRuleSet::apply
   llvm::LegalizerInfo::getAction

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201901220414:201902020421
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201902040424:201902060426

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5713452666978304

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
instructions to reproduce this bug locally.

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

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