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

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
83 0 EP call site: 00000 libcst.codemod._visitor.ContextAwareTransformer.__init__

Fuzzer calltree

0 ...fuzz_transformer.TestOneInput [function] [call site] 00000
1 atheris.FuzzedDataProvider [function] [call site] 00001
1 libcst.codemod._visitor.ContextAwareTransformer.__init__ [function] [call site] 00002
2 libcst.codemod._codemod.Codemod.__init__ [function] [call site] 00003
3 libcst._metadata_dependent.MetadataDependent.__init__ [function] [call site] 00004
2 libcst.matchers._visitors.MatcherDecoratableTransformer.__init__ [function] [call site] 00005
3 libcst._metadata_dependent.MetadataDependent.__init__ [function] [call site] 00006
3 libcst.matchers._visitors._gather_constructed_visit_funcs [function] [call site] 00007
4 <builtin>.dir [function] [call site] 00008
4 libcst.matchers._visitors.is_property [function] [call site] 00009
5 <builtin>.type [function] [call site] 00010
5 <builtin>.getattr [function] [call site] 00011
5 <builtin>.isinstance [function] [call site] 00012
4 <builtin>.getattr [function] [call site] 00013
4 inspect.ismethod [function] [call site] 00014
4 typing.cast [function] [call site] 00015
4 <builtin>.getattr [function] [call site] 00016
4 libcst.matchers._visitors._assert_not_concrete [function] [call site] 00017
4 typing.cast [function] [call site] 00018
4 constructed_visitors.get [function] [call site] 00019
3 libcst.matchers._visitors._gather_constructed_leave_funcs [function] [call site] 00020
4 <builtin>.dir [function] [call site] 00021
4 libcst.matchers._visitors.is_property [function] [call site] 00022
4 <builtin>.getattr [function] [call site] 00023
4 inspect.ismethod [function] [call site] 00024
4 typing.cast [function] [call site] 00025
4 <builtin>.getattr [function] [call site] 00026
4 libcst.matchers._visitors._assert_not_concrete [function] [call site] 00027
4 typing.cast [function] [call site] 00028
4 constructed_visitors.get [function] [call site] 00029
3 libcst.matchers._visitors._check_types [function] [call site] 00030
4 abc.ABC._extra_leave_funcs.items [function] [call site] 00031
4 abc.ABC._extra_visit_funcs.items [function] [call site] 00032
4 libcst.matchers._visitors._get_possible_match_classes [function] [call site] 00033
5 <builtin>.isinstance [function] [call site] 00034
5 <builtin>.getattr [function] [call site] 00035
5 <builtin>.getattr [function] [call site] 00036
4 <builtin>.any [function] [call site] 00037
4 <builtin>.isinstance [function] [call site] 00038
4 inspect.ismethod [function] [call site] 00039
4 libcst.matchers._visitors._verify_return_annotation [function] [call site] 00040
5 typing.get_type_hints [function] [call site] 00041
5 <builtin>.type [function] [call site] 00042
5 typing.get_type_hints.get [function] [call site] 00043
5 <builtin>.type [function] [call site] 00044
5 libcst.matchers._visitors._get_possible_annotated_classes [function] [call site] 00045
6 libcst.matchers._visitors._annotation_is_union [function] [call site] 00046
7 <builtin>.isinstance [function] [call site] 00047
7 <builtin>.getattr [function] [call site] 00048
6 <builtin>.getattr [function] [call site] 00049
5 libcst.matchers._visitors._get_valid_leave_annotations_for_classes [function] [call site] 00050
6 <builtin>.set [function] [call site] 00051
6 retval.update [function] [call site] 00052
6 libcst.matchers._visitors._get_possible_annotated_classes [function] [call site] 00053
5 <builtin>.issubclass [function] [call site] 00054
4 libcst.matchers._visitors._verify_parameter_annotations [function] [call site] 00055
5 inspect.signature [function] [call site] 00056
5 <builtin>.len [function] [call site] 00057
5 typing.get_type_hints [function] [call site] 00058
5 typing.get_type_hints.items [function] [call site] 00059
5 libcst.matchers._visitors._get_possible_annotated_classes [function] [call site] 00060
5 <builtin>.issubclass [function] [call site] 00061
3 libcst.matchers._visitors._check_types [function] [call site] 00062
1 fdp.ConsumeUnicodeNoSurrogates [function] [call site] 00063
1 libcst._parser.entrypoints.parse_module [function] [call site] 00064
2 libcst._parser.entrypoints._parse [function] [call site] 00065
3 libcst._parser.detect_config.convert_to_utf8 [function] [call site] 00066
4 libcst._parser.detect_config._detect_encoding [function] [call site] 00067
5 <builtin>.isinstance [function] [call site] 00068
5 io.BytesIO [function] [call site] 00069
5 tokenize.detect_encoding [function] [call site] 00070
4 <builtin>.isinstance [function] [call site] 00071
4 <builtin>.isinstance [function] [call site] 00072
4 abc.ABC.new_name.decode [function] [call site] 00073
4 abc.ABC.new_module.decode [function] [call site] 00074
4 abc.ABC.new_mod_or_obj.decode [function] [call site] 00075
3 functools.partial [function] [call site] 00076
3 functools.partial [function] [call site] 00077
2 <builtin>.isinstance [function] [call site] 00078
1 libcst.codemod._command.CodemodCommand.transform_module [function] [call site] 00079
2 <builtin>.super [function] [call site] 00080
2 supported_transforms.items [function] [call site] 00081
2 libcst.codemod._command.CodemodCommand._instantiate_and_run [function] [call site] 00082
3 inst.transform_module [function] [call site] 00083