Fuzz introspector: fuzz_lexer
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
185 0 EP call site: 00000 mako.lexer.Lexer.parse

Fuzzer calltree

0 ...fuzz_lexer.TestOneInput [function] [call site] 00000
1 atheris.FuzzedDataProvider [function] [call site] 00001
1 fdp.ConsumeUnicodeNoSurrogates [function] [call site] 00002
1 mako.lexer.Lexer.__init__ [function] [call site] 00003
2 mako.parsetree.TemplateNode.__init__ [function] [call site] 00004
3 <builtin>.super [function] [call site] 00005
2 <builtin>.hasattr [function] [call site] 00006
1 mako.lexer.Lexer.parse [function] [call site] 00007
2 mako.lexer.Lexer.decode_raw_stream [function] [call site] 00008
3 <builtin>.isinstance [function] [call site] 00009
3 text.startswith [function] [call site] 00011
3 <builtin>.len [function] [call site] 00012
3 text.decode [function] [call site] 00013
3 text.decode [function] [call site] 00015
3 text.decode [function] [call site] 00017
2 mako.lexer.Lexer.match_reg [function] [call site] 00018
3 reg.match [function] [call site] 00019
3 match.span [function] [call site] 00020
2 <builtin>.len [function] [call site] 00021
2 mako.lexer.Lexer.match_end [function] [call site] 00022
3 mako.lexer.Lexer.match [function] [call site] 00023
4 re.compile [function] [call site] 00024
4 re.compile [function] [call site] 00025
4 mako.lexer.Lexer.match_reg [function] [call site] 00026
3 match.group [function] [call site] 00027
2 mako.lexer.Lexer.match_expression [function] [call site] 00028
3 mako.lexer.Lexer.match [function] [call site] 00029
3 mako.lexer.Lexer.parse_until_text [function] [call site] 00030
4 mako.lexer.Lexer.match [function] [call site] 00031
4 mako.lexer.Lexer.match [function] [call site] 00032
4 mako.lexer.Lexer.match [function] [call site] 00033
4 match.group [function] [call site] 00034
4 <builtin>.len [function] [call site] 00035
4 match.group [function] [call site] 00036
4 mako.lexer.Lexer.match [function] [call site] 00037
4 match.group [function] [call site] 00038
4 match.group [function] [call site] 00039
4 match.group [function] [call site] 00040
4 match.group [function] [call site] 00041
4 match.group [function] [call site] 00042
4 match.group [function] [call site] 00043
3 mako.lexer.Lexer.parse_until_text [function] [call site] 00044
3 text.replace [function] [call site] 00045
3 mako.lexer.Lexer.append_node [function] [call site] 00046
4 kwargs.setdefault [function] [call site] 00047
4 kwargs.setdefault [function] [call site] 00048
4 kwargs.setdefault [function] [call site] 00049
4 mako.parsetree.ControlLine.__init__ [function] [call site] 00050
5 <builtin>.super [function] [call site] 00051
5 mako.ast.PythonFragment.__init__ [function] [call site] 00052
4 mako.parsetree.Tag.__init__ [function] [call site] 00059
5 <builtin>.super [function] [call site] 00060
5 mako.parsetree.Tag._parse_attributes [function] [call site] 00061
6 <builtin>.set [function] [call site] 00062
6 re.compile [function] [call site] 00063
6 re.compile [function] [call site] 00064
6 mako.ast.PythonCode.__init__ [function] [call site] 00065
7 <builtin>.set [function] [call site] 00066
7 <builtin>.set [function] [call site] 00067
7 <builtin>.isinstance [function] [call site] 00068
7 code.lstrip [function] [call site] 00069
7 mako.pyparser.parse [function] [call site] 00070
8 mako._ast_util.parse [function] [call site] 00071
9 <builtin>.compile [function] [call site] 00072
7 mako.pyparser.FindIdentifiers.__init__ [function] [call site] 00073
8 <builtin>.set [function] [call site] 00074
7 mako._ast_util.NodeVisitor.visit [function] [call site] 00075
8 mako._ast_util.NodeVisitor.get_visitor [function] [call site] 00076
9 <builtin>.getattr [function] [call site] 00077
8 mako._ast_util.NodeVisitor.generic_visit [function] [call site] 00078
9 mako._ast_util.iter_fields [function] [call site] 00079
10 <builtin>.getattr [function] [call site] 00080
9 <builtin>.isinstance [function] [call site] 00081
9 <builtin>.isinstance [function] [call site] 00082
9 mako._ast_util.NodeVisitor.visit [function] [call site] 00083
9 <builtin>.isinstance [function] [call site] 00084
9 mako._ast_util.NodeVisitor.visit [function] [call site] 00085
6 undeclared_identifiers.union [function] [call site] 00087
6 expr.append [function] [call site] 00089
6 <builtin>.repr [function] [call site] 00090
6 expr.append [function] [call site] 00091
6 <builtin>.repr [function] [call site] 00092
6 re.search [function] [call site] 00093
6 <builtin>.repr [function] [call site] 00094
5 <builtin>.len [function] [call site] 00095
4 mako.parsetree.Text.__init__ [function] [call site] 00096
5 <builtin>.super [function] [call site] 00097
4 mako.parsetree.Expression.__init__ [function] [call site] 00098
5 <builtin>.super [function] [call site] 00099
5 mako.ast.ArgumentList.__init__ [function] [call site] 00100
6 <builtin>.set [function] [call site] 00101
6 <builtin>.set [function] [call site] 00102
6 <builtin>.isinstance [function] [call site] 00103
6 mako.pyparser.parse [function] [call site] 00106
6 mako.pyparser.FindTuple.__init__ [function] [call site] 00107
6 mako._ast_util.NodeVisitor.visit [function] [call site] 00108
5 mako.ast.PythonCode.__init__ [function] [call site] 00109
4 mako.parsetree.Comment.__init__ [function] [call site] 00110
5 <builtin>.super [function] [call site] 00111
4 mako.parsetree.Code.__init__ [function] [call site] 00112
5 <builtin>.super [function] [call site] 00113
5 mako.ast.PythonCode.__init__ [function] [call site] 00114
4 <builtin>.len [function] [call site] 00115
4 control_frame.nodes.append [function] [call site] 00116
4 <builtin>.isinstance [function] [call site] 00117
4 control_frame.is_ternary [function] [call site] 00118
4 <builtin>.isinstance [function] [call site] 00119
4 <builtin>.len [function] [call site] 00120
4 <builtin>.isinstance [function] [call site] 00121
3 escapes.strip [function] [call site] 00122
2 mako.lexer.Lexer.match_control_line [function] [call site] 00123
3 mako.lexer.Lexer.match [function] [call site] 00124
3 match.group [function] [call site] 00125
3 match.group [function] [call site] 00126
3 <builtin>.len [function] [call site] 00129
3 mako.lexer.Lexer.append_node [function] [call site] 00130
3 mako.lexer.Lexer.append_node [function] [call site] 00131
2 mako.lexer.Lexer.match_comment [function] [call site] 00132
3 mako.lexer.Lexer.match [function] [call site] 00133
3 match.group [function] [call site] 00134
3 mako.lexer.Lexer.append_node [function] [call site] 00135
2 mako.lexer.Lexer.match_tag_start [function] [call site] 00136
3 mako.lexer.Lexer.match [function] [call site] 00137
3 match.groups [function] [call site] 00138
3 re.findall [function] [call site] 00139
3 text.replace [function] [call site] 00140
3 mako.lexer.Lexer.append_node [function] [call site] 00141
3 mako.lexer.Lexer.match [function] [call site] 00142
3 match.group [function] [call site] 00143
3 mako.lexer.Lexer.append_node [function] [call site] 00144
3 mako.lexer.Lexer.match_tag_end [function] [call site] 00145
4 mako.lexer.Lexer.match [function] [call site] 00146
4 <builtin>.len [function] [call site] 00147
4 match.group [function] [call site] 00148
2 mako.lexer.Lexer.match_tag_end [function] [call site] 00149
2 mako.lexer.Lexer.match_python_block [function] [call site] 00150
3 mako.lexer.Lexer.match [function] [call site] 00151
3 mako.lexer.Lexer.parse_until_text [function] [call site] 00152
3 mako.pygen.adjust_whitespace [function] [call site] 00153
4 mako.pygen.adjust_whitespace.in_multi_line [function] [call site] 00155
5 re.search [function] [call site] 00156
5 mako.pygen.adjust_whitespace.in_multi_line.match [function] [call site] 00157
6 <builtin>.len [function] [call site] 00160
5 mako.pygen.adjust_whitespace.in_multi_line.match [function] [call site] 00161
5 mako.pygen.adjust_whitespace.in_multi_line.match [function] [call site] 00162
5 mako.pygen.adjust_whitespace.in_multi_line.match [function] [call site] 00163
5 mako.pygen.adjust_whitespace.in_multi_line.match [function] [call site] 00165
4 lines.append [function] [call site] 00166
4 line.expandtabs [function] [call site] 00167
4 re.search [function] [call site] 00168
4 mako.pygen.adjust_whitespace._indent_line [function] [call site] 00170
4 lines.append [function] [call site] 00172
3 mako.lexer.Lexer.append_node [function] [call site] 00173
3 match.group [function] [call site] 00174
2 mako.lexer.Lexer.match_percent [function] [call site] 00175
3 mako.lexer.Lexer.match [function] [call site] 00176
3 mako.lexer.Lexer.append_node [function] [call site] 00177
3 match.group [function] [call site] 00178
3 match.group [function] [call site] 00179
2 mako.lexer.Lexer.match_text [function] [call site] 00180
3 mako.lexer.Lexer.match [function] [call site] 00181
3 match.group [function] [call site] 00182
3 mako.lexer.Lexer.append_node [function] [call site] 00183
2 <builtin>.len [function] [call site] 00184
2 <builtin>.len [function] [call site] 00185