[llvm-bugs] Issue 6875 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-loop_vectorize: Null-dereference READ in llvm::Type::getPrimitiveSizeInBits

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #5 on issue 6875 by ClusterFuzz-External:  
llvm/llvm-opt-fuzzer--x86_64-loop_vectorize: Null-dereference READ in  
llvm::Type::getPrimitiveSizeInBits
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6875#c5

ClusterFuzz has detected this issue as fixed in range  
201809210124:201809220126.

Detailed report: https://oss-fuzz.com/testcase?key=4850607002222592

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

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
   llvm::Type::getPrimitiveSizeInBits
   llvm::InnerLoopVectorizer::getOrCreateTripCount
   llvm::InnerLoopVectorizer::createVectorizedLoopSkeleton

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201802190622:201802200626
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201809210124:201809220126

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=4850607002222592

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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