Fuzz introspector: fuzz_encode_decode
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
8 4 idna.core.encode call site: 00004 idna.core.uts46_remap
2 103 idna.core.decode call site: 00103 idna.core.uts46_remap
1 106 idna.core.decode call site: 00106 s.split

Fuzzer calltree

0 ...fuzz_encode_decode.TestOneInput [function] [call site] 00000
1 atheris.FuzzedDataProvider [function] [call site] 00001
1 fdp.ConsumeString [function] [call site] 00002
1 idna.core.encode [function] [call site] 00003
2 <builtin>.isinstance [function] [call site] 00004
2 <builtin>.str [function] [call site] 00005
2 idna.core.uts46_remap [function] [call site] 00006
3 <builtin>.enumerate [function] [call site] 00007
3 <builtin>.ord [function] [call site] 00008
3 bisect.bisect_left [function] [call site] 00009
3 <builtin>.len [function] [call site] 00010
3 unicodedata.normalize [function] [call site] 00011
2 s.split [function] [call site] 00012
2 _unicode_dots_re.split [function] [call site] 00013
2 idna.core.alabel [function] [call site] 00014
3 label.encode [function] [call site] 00015
3 idna.core.ulabel [function] [call site] 00016
4 <builtin>.isinstance [function] [call site] 00017
4 label.encode [function] [call site] 00018
4 idna.core.check_label [function] [call site] 00019
5 <builtin>.isinstance [function] [call site] 00020
5 label.decode [function] [call site] 00021
5 <builtin>.len [function] [call site] 00022
5 idna.core.check_nfc [function] [call site] 00023
6 unicodedata.normalize [function] [call site] 00024
5 idna.core.check_hyphen_ok [function] [call site] 00025
5 idna.core.check_initial_combiner [function] [call site] 00026
6 unicodedata.category [function] [call site] 00027
5 <builtin>.enumerate [function] [call site] 00028
5 <builtin>.ord [function] [call site] 00029
5 idna.intranges.intranges_contain [function] [call site] 00030
6 idna.intranges._encode_range [function] [call site] 00031
6 bisect.bisect_left [function] [call site] 00032
6 idna.intranges._decode_range [function] [call site] 00033
6 <builtin>.len [function] [call site] 00034
6 idna.intranges._decode_range [function] [call site] 00035
5 idna.intranges.intranges_contain [function] [call site] 00036
5 idna.core.valid_contextj [function] [call site] 00037
6 <builtin>.ord [function] [call site] 00038
6 <builtin>.ord [function] [call site] 00039
6 idna.core._combining_class [function] [call site] 00040
7 <builtin>.chr [function] [call site] 00041
7 unicodedata.combining [function] [call site] 00042
7 <builtin>.chr [function] [call site] 00043
7 unicodedata.name [function] [call site] 00044
6 <builtin>.range [function] [call site] 00045
6 <builtin>.ord [function] [call site] 00046
6 idnadata.joining_types.get [function] [call site] 00047
6 <builtin>.ord [function] [call site] 00048
6 <builtin>.ord [function] [call site] 00049
6 <builtin>.ord [function] [call site] 00050
6 <builtin>.len [function] [call site] 00051
6 <builtin>.range [function] [call site] 00052
6 <builtin>.ord [function] [call site] 00053
6 idnadata.joining_types.get [function] [call site] 00054
6 <builtin>.ord [function] [call site] 00055
6 <builtin>.ord [function] [call site] 00056
6 <builtin>.ord [function] [call site] 00057
6 <builtin>.ord [function] [call site] 00058
6 idna.core._combining_class [function] [call site] 00059
5 idna.intranges.intranges_contain [function] [call site] 00060
5 idna.core.valid_contexto [function] [call site] 00061
6 <builtin>.ord [function] [call site] 00062
6 <builtin>.len [function] [call site] 00063
6 <builtin>.ord [function] [call site] 00064
6 <builtin>.ord [function] [call site] 00065
6 <builtin>.len [function] [call site] 00066
6 <builtin>.len [function] [call site] 00067
6 idna.core._is_script [function] [call site] 00068
7 <builtin>.ord [function] [call site] 00069
7 idna.intranges.intranges_contain [function] [call site] 00070
6 idna.core._is_script [function] [call site] 00071
6 idna.core._is_script [function] [call site] 00072
6 idna.core._is_script [function] [call site] 00073
6 idna.core._is_script [function] [call site] 00074
6 <builtin>.ord [function] [call site] 00075
6 <builtin>.ord [function] [call site] 00076
5 idna.core.check_bidi [function] [call site] 00077
6 <builtin>.enumerate [function] [call site] 00078
6 unicodedata.bidirectional [function] [call site] 00079
6 unicodedata.bidirectional [function] [call site] 00080
6 <builtin>.enumerate [function] [call site] 00081
6 unicodedata.bidirectional [function] [call site] 00082
4 label_bytes.lower [function] [call site] 00083
4 label_bytes.startswith [function] [call site] 00084
4 <builtin>.len [function] [call site] 00085
4 label_bytes.decode [function] [call site] 00086
4 idna.core.check_label [function] [call site] 00087
4 label_bytes.decode [function] [call site] 00088
4 label_bytes.decode [function] [call site] 00089
4 idna.core.check_label [function] [call site] 00090
3 idna.core.valid_label_length [function] [call site] 00091
4 <builtin>.len [function] [call site] 00092
3 idna.core.check_label [function] [call site] 00093
3 idna.core._punycode [function] [call site] 00094
4 s.encode [function] [call site] 00095
3 idna.core.valid_label_length [function] [call site] 00096
2 result.append [function] [call site] 00097
2 result.append [function] [call site] 00098
2 idna.core.valid_string_length [function] [call site] 00099
3 <builtin>.len [function] [call site] 00100
1 fdp.ConsumeString [function] [call site] 00101
1 idna.core.decode [function] [call site] 00102
2 <builtin>.isinstance [function] [call site] 00103
2 <builtin>.str [function] [call site] 00104
2 idna.core.uts46_remap [function] [call site] 00105
2 _unicode_dots_re.split [function] [call site] 00106
2 s.split [function] [call site] 00107
2 idna.core.ulabel [function] [call site] 00108
2 result.append [function] [call site] 00109
2 result.append [function] [call site] 00110