[llvm-bugs] Issue 4788 in oss-fuzz: llvm/llvm-opt-fuzzer--x86_64-instcombine: ASSERT: isa<X>(Val) && "cast<Ty>() argument of incompatible type!"

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #3 on issue 4788 by ClusterFuzz-External:  
llvm/llvm-opt-fuzzer--x86_64-instcombine: ASSERT: isa<X>(Val)  
&& "cast<Ty>() argument of incompatible type!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4788#c3

ClusterFuzz has detected this issue as fixed in range  
201712280611:201712282031.

Detailed report: https://oss-fuzz.com/testcase?key=6319261761929216

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

Crash Type: ASSERT
Crash Address:
Crash State:
   isa<X>(Val) && "cast<Ty>() argument of incompatible type!"
   llvm::InstCombiner::visitCallInst
   llvm::InstCombiner::run

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201711130743:201711140614
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201712280611:201712282031

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=6319261761929216

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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