OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31578
Crash type: UNKNOWN READ Crash state: std::__Fuzzer::basic_filebuf<char, std::__Fuzzer::char_traits<char> >::setbuf std::__Fuzzer::basic_filebuf<char, std::__Fuzzer::chartraits<char> >::basicfil