Fuzz introspector: fuzz_graph6
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzzer calltree

0 ...fuzz_graph6.TestOneInput [function] [call site] 00000
1 <builtin>.len [function] [call site] 00001
1 networkx.from_graph6_bytes [function] [call site] 00002