Fuzz introspector: fuzz_parse
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
5 18 cssselect.parser.parse call site: {node_id} cssselect.parser.Selector.__init__
4 104 cssselect.parser.parse_simple_selector call site: {node_id} .len
1 26 cssselect.parser.tokenize call site: {node_id} match.group
1 28 cssselect.parser.tokenize call site: {node_id} match.group
1 31 cssselect.parser.tokenize call site: {node_id} match.group
1 51 cssselect.parser.parse_simple_selector call site: {node_id} peek.is_delim
1 76 cssselect.parser.parse_attrib call site: {node_id} stream.peek
1 93 cssselect.parser.FunctionalPseudoElement.__init__ call site: {node_id} cssselect.parser.parse_arguments

Fuzzer calltree

0 ...fuzz_parse.TestOneInput [function] [call site] 00000
1 atheris.FuzzedDataProvider [function] [call site] 00001
1 fdp.ConsumeIntInRange [function] [call site] 00002
1 fdp.ConsumeUnicodeNoSurrogates [function] [call site] 00003
1 cssselect.parser.parse [function] [call site] 00004
2 _el_re.match [function] [call site] 00005
2 match.group [function] [call site] 00006
2 cssselect.parser.Element.__init__ [function] [call site] 00007
2 cssselect.parser.Selector.__init__ [function] [call site] 00008
3 <builtin>.isinstance [function] [call site] 00009
3 cssselect.parser.ascii_lower [function] [call site] 00010
4 string.encode [function] [call site] 00011
2 _id_re.match [function] [call site] 00012
2 match.group [function] [call site] 00013
2 cssselect.parser.Element.__init__ [function] [call site] 00014
2 match.group [function] [call site] 00015
2 cssselect.parser.Hash.__init__ [function] [call site] 00016
2 cssselect.parser.Selector.__init__ [function] [call site] 00017
2 _class_re.match [function] [call site] 00018
2 match.group [function] [call site] 00019
2 cssselect.parser.Element.__init__ [function] [call site] 00020
2 match.group [function] [call site] 00021
2 cssselect.parser.Class.__init__ [function] [call site] 00022
2 cssselect.parser.Selector.__init__ [function] [call site] 00023
2 cssselect.parser.tokenize [function] [call site] 00024
3 <builtin>.len [function] [call site] 00025
3 match.end [function] [call site] 00026
3 match.group [function] [call site] 00027
3 match.end [function] [call site] 00028
3 match.group [function] [call site] 00029
3 match.end [function] [call site] 00030
3 match.end [function] [call site] 00031
3 match.group [function] [call site] 00032
3 match.group [function] [call site] 00033
3 match.end [function] [call site] 00034
2 cssselect.parser.TokenStream.__init__ [function] [call site] 00036
3 <builtin>.iter [function] [call site] 00037
2 cssselect.parser.parse_selector_group [function] [call site] 00038
3 stream.skip_whitespace [function] [call site] 00039
3 cssselect.parser.parse_selector [function] [call site] 00040
4 cssselect.parser.parse_simple_selector [function] [call site] 00041
5 stream.skip_whitespace [function] [call site] 00042
5 <builtin>.len [function] [call site] 00043
5 stream.peek [function] [call site] 00044
5 stream.next [function] [call site] 00045
5 stream.next [function] [call site] 00046
5 stream.peek [function] [call site] 00047
5 stream.next [function] [call site] 00048
5 stream.next_ident_or_star [function] [call site] 00049
5 cssselect.parser.Element.__init__ [function] [call site] 00050
5 stream.peek [function] [call site] 00051
5 peek.is_delim [function] [call site] 00052
5 stream.next [function] [call site] 00053
5 typing.cast [function] [call site] 00054
5 cssselect.parser.Hash.__init__ [function] [call site] 00055
5 stream.next [function] [call site] 00056
5 stream.next_ident [function] [call site] 00057
5 cssselect.parser.Class.__init__ [function] [call site] 00058
5 stream.next [function] [call site] 00059
5 stream.next_ident [function] [call site] 00060
5 cssselect.parser.Element.__init__ [function] [call site] 00061
5 stream.next [function] [call site] 00062
5 cssselect.parser.parse_attrib [function] [call site] 00063
6 stream.skip_whitespace [function] [call site] 00064
6 stream.next_ident_or_star [function] [call site] 00065
6 stream.peek [function] [call site] 00066
6 stream.peek [function] [call site] 00067
6 stream.next [function] [call site] 00068
6 stream.peek [function] [call site] 00069
6 stream.next [function] [call site] 00070
6 stream.next_ident [function] [call site] 00071
6 stream.skip_whitespace [function] [call site] 00072
6 stream.next [function] [call site] 00073
6 typing.cast [function] [call site] 00074
6 cssselect.parser.Attrib.__init__ [function] [call site] 00075
6 next.is_delim [function] [call site] 00076
6 stream.peek [function] [call site] 00077
6 typing.cast [function] [call site] 00078
6 stream.next [function] [call site] 00079
6 stream.skip_whitespace [function] [call site] 00080
6 stream.next [function] [call site] 00081
6 stream.skip_whitespace [function] [call site] 00082
6 stream.next [function] [call site] 00083
6 typing.cast [function] [call site] 00084
6 cssselect.parser.Attrib.__init__ [function] [call site] 00085
5 stream.next [function] [call site] 00086
5 stream.peek [function] [call site] 00087
5 stream.next [function] [call site] 00088
5 stream.next_ident [function] [call site] 00089
5 stream.peek [function] [call site] 00090
5 stream.next [function] [call site] 00091
5 cssselect.parser.FunctionalPseudoElement.__init__ [function] [call site] 00092
6 cssselect.parser.ascii_lower [function] [call site] 00093
5 cssselect.parser.parse_arguments [function] [call site] 00094
6 stream.skip_whitespace [function] [call site] 00095
6 stream.next [function] [call site] 00096
6 arguments.append [function] [call site] 00097
5 stream.next_ident [function] [call site] 00098
5 ident.lower [function] [call site] 00099
5 <builtin>.str [function] [call site] 00100
5 stream.peek [function] [call site] 00101
5 cssselect.parser.Pseudo.__init__ [function] [call site] 00102
6 cssselect.parser.ascii_lower [function] [call site] 00103
5 <builtin>.repr [function] [call site] 00104
5 <builtin>.len [function] [call site] 00105
5 <builtin>.len [function] [call site] 00106
5 <builtin>.len [function] [call site] 00107
5 <builtin>.len [function] [call site] 00108
5 stream.next [function] [call site] 00109
5 stream.skip_whitespace [function] [call site] 00110
5 ident.lower [function] [call site] 00111
5 cssselect.parser.parse_simple_selector [function] [call site] 00112
5 stream.next [function] [call site] 00113
5 cssselect.parser.Negation.__init__ [function] [call site] 00114
5 ident.lower [function] [call site] 00115
5 cssselect.parser.parse_relative_selector [function] [call site] 00116
6 stream.skip_whitespace [function] [call site] 00117
6 stream.next [function] [call site] 00118
6 stream.skip_whitespace [function] [call site] 00119
6 stream.next [function] [call site] 00120
6 typing.cast [function] [call site] 00121
6 cssselect.parser.parse [function] [call site] 00122
6 stream.next [function] [call site] 00123
5 cssselect.parser.Relation.__init__ [function] [call site] 00124
5 ident.lower [function] [call site] 00125
5 cssselect.parser.parse_simple_selector_arguments [function] [call site] 00126
6 cssselect.parser.parse_simple_selector [function] [call site] 00127
6 stream.skip_whitespace [function] [call site] 00128
6 stream.next [function] [call site] 00129
6 stream.next [function] [call site] 00130
6 stream.skip_whitespace [function] [call site] 00131
6 arguments.append [function] [call site] 00132
6 arguments.append [function] [call site] 00133
5 cssselect.parser.Matching.__init__ [function] [call site] 00134
5 ident.lower [function] [call site] 00135
5 cssselect.parser.parse_simple_selector_arguments [function] [call site] 00136
5 cssselect.parser.SpecificityAdjustment.__init__ [function] [call site] 00137
5 cssselect.parser.parse_arguments [function] [call site] 00138
5 cssselect.parser.Function.__init__ [function] [call site] 00139
6 cssselect.parser.ascii_lower [function] [call site] 00140
5 <builtin>.len [function] [call site] 00141
4 stream.skip_whitespace [function] [call site] 00142
4 stream.peek [function] [call site] 00143
4 peek.is_delim [function] [call site] 00144
4 stream.next [function] [call site] 00145
4 typing.cast [function] [call site] 00146
4 stream.skip_whitespace [function] [call site] 00147
4 cssselect.parser.parse_simple_selector [function] [call site] 00148
4 cssselect.parser.CombinedSelector.__init__ [function] [call site] 00149
3 cssselect.parser.Selector.__init__ [function] [call site] 00150
3 stream.peek [function] [call site] 00151
3 stream.next [function] [call site] 00152
3 stream.skip_whitespace [function] [call site] 00153
2 <builtin>.list [function] [call site] 00154