mruby:mruby_proto_fuzzer: Bad-cast to ::ruby_fuzzer::BuiltinFuncs from invalid vptr in ruby_fuzzer::Statement::clear_stmt_oneof

Project: https://github.com/mruby/mruby.git Detailed Report: https://oss-fuzz.com/testcase?key=4641941434466304 Project: mruby Fuzzing Engine: libFuzzer Fuzz Target: mrubyprotofuzzer Job Type: libfuzzerubsanmruby Platform Id: linux Crash Type: Bad-cast Crash Address: 0x598bb83514a0 Crash State:...