Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
4	0	EP	call site	atheris.FuzzedDataProvider

Fuzzer calltree


         fuzz_textreader_parser.TestOneInput

[function] [call site] 00000


           atheris.FuzzedDataProvider

[function] [call site] 00001


           fdp.ConsumeUnicodeNoSurrogates

[function] [call site] 00002


           io.StringIO

[function] [call site] 00003


           pandas.io.parsers.read_csv

[function] [call site] 00004