[llvm-bugs] Issue 12781 in oss-fuzz: llvm/llvm-isel-fuzzer--wasm32-O2: ASSERT: N->getOpcode() != ISD::DELETED_NODE && "Node was deleted but visit returned NULL

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #4 on issue 12781 by ClusterFuzz-External:  
llvm/llvm-isel-fuzzer--wasm32-O2: ASSERT: N->getOpcode() !=  
ISD::DELETED_NODE && "Node was deleted but visit returned NULL
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12781#c4

ClusterFuzz has detected this issue as fixed in range  
201903130407:201903140334.

Detailed report: https://oss-fuzz.com/testcase?key=5635146621911040

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--wasm32-O2
Fuzz target binary: llvm-isel-fuzzer--wasm32-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address:
Crash State:
   N->getOpcode() != ISD::DELETED_NODE && "Node was deleted but visit  
returned NULL
   DAGCombiner::combine
   llvm::SelectionDAG::Combine

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201810170227:201811111623
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201903130407:201903140334

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5635146621911040

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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