Fuzz introspector: fuzz_io_mio5
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzzer calltree

0 ...fuzz_io_mio5.TestOneInput [function] [call site] 00000
1 .len [function] [call site] 00001
1 io.BytesIO [function] [call site] 00002
1 scipy.io.matlab._mio5.MatFile5Reader [function] [call site] 00003
1 scipy.io.matlab._mio5.MatFile5Reader.get_variables [function] [call site] 00004