libfmt:fuzzer_named_arg: Stack-buffer-underflow in fmt::v6::basic_format_args<fmt::v6::basic_format_context<std::__1::back_insert_i

Detailed Report: https://oss-fuzz.com/testcase?key=5747676286287872 Project: libfmt Fuzzing Engine: libFuzzer Fuzz Target: fuzzernamedarg Job Type: libfuzzerasanlibfmt Platform Id: linux Crash Type: Stack-buffer-underflow READ 16 Crash Address: 0x7f200d9a6110 Crash State:...