Fuzz introspector: format_no_args
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 __cxa_begin_catch [call site] 00001
1 __cxa_end_catch [call site] 00002