Fuzz introspector: fuzz_lexers
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
151 111 pygments.util.get_list_opt call site: 00111 pygments.lexers.pascal.DelphiLexer.get_tokens_unprocessed
66 24 ...fuzz_lexers.TestOneInput call site: 00024 pygments.lex
5 93 pygments.util.get_bool_opt call site: 00093 .isinstance
3 14 pygments.plugin.iter_entry_points call site: 00014 importlib.metadata.entry_points.get
2 2 ...fuzz_lexers.TestOneInput call site: 00002 pygments.lexers.get_lexer_by_name
1 0 EP call site: 00000 .len
1 6 pygments.lexers.get_lexer_by_name call site: 00006 pygments.lexers._load_lexers
1 22 ...fuzz_lexers.TestOneInput call site: 00022 fdp.ConsumeUnicode
1 108 pygments.util.get_list_opt call site: 00108 val.split

Fuzzer calltree

0 ...fuzz_lexers.TestOneInput [function] [call site] 00000
1 <builtin>.len [function] [call site] 00001
1 atheris.FuzzedDataProvider [function] [call site] 00002
1 fdp.PickValueInList [function] [call site] 00003
1 pygments.lexers.get_lexer_by_name [function] [call site] 00004
2 LEXERS.values [function] [call site] 00005
2 _alias.lower [function] [call site] 00006
2 pygments.lexers._load_lexers [function] [call site] 00007
3 <builtin>.__import__ [function] [call site] 00008
3 <builtin>.getattr [function] [call site] 00009
2 pygments.plugin.find_plugin_lexers [function] [call site] 00010
3 pygments.plugin.iter_entry_points [function] [call site] 00011
4 importlib.metadata.entry_points [function] [call site] 00012
4 <builtin>.hasattr [function] [call site] 00013
4 importlib.metadata.entry_points.select [function] [call site] 00014
4 importlib.metadata.entry_points.get [function] [call site] 00015
3 entrypoint.load [function] [call site] 00016
2 _alias.lower [function] [call site] 00017
1 pygments.filters.FILTERS.keys [function] [call site] 00018
1 <builtin>.list [function] [call site] 00019
1 fdp.PickValueInList [function] [call site] 00020
1 random_lexer.add_filter [function] [call site] 00021
1 fdp.PickValueInList [function] [call site] 00022
1 fdp.ConsumeUnicode [function] [call site] 00023
1 pygments.highlight [function] [call site] 00024
2 pygments.lex [function] [call site] 00025
3 pygments.lexer.Lexer.get_tokens [function] [call site] 00026
4 pygments.lexer.Lexer._preprocess_lexer_input [function] [call site] 00027
5 <builtin>.isinstance [function] [call site] 00028
5 pygments.util.guess_decode [function] [call site] 00029
6 text.decode [function] [call site] 00030
6 locale.getpreferredencoding [function] [call site] 00031
6 text.decode [function] [call site] 00032
6 text.decode [function] [call site] 00033
5 text.startswith [function] [call site] 00034
5 <builtin>.len [function] [call site] 00035
5 chardet.detect [function] [call site] 00036
5 enc.get [function] [call site] 00037
5 text.decode [function] [call site] 00038
5 text.decode [function] [call site] 00039
5 text.startswith [function] [call site] 00040
5 <builtin>.len [function] [call site] 00041
5 text.startswith [function] [call site] 00042
5 <builtin>.len [function] [call site] 00043
5 text.replace [function] [call site] 00044
5 text.replace [function] [call site] 00045
5 text.strip [function] [call site] 00046
5 text.strip [function] [call site] 00047
5 text.expandtabs [function] [call site] 00048
5 text.endswith [function] [call site] 00049
4 pygments.lexer.Lexer.get_tokens.streamer [function] [call site] 00050
5 pygments.lexers.special.TextLexer.get_tokens_unprocessed [function] [call site] 00051
5 pygments.lexers.scripting.LuaLexer.get_tokens_unprocessed [function] [call site] 00052
6 pygments.lexers.dylan.DylanLexer.get_tokens_unprocessed [function] [call site] 00053
7 pygments.lexers.dylan.DylanLexer.get_tokens_unprocessed [function] [call site] 00054
7 pygments.lexers.haskell.CryptolLexer.get_tokens_unprocessed [function] [call site] 00055
8 pygments.lexers.dylan.DylanLexer.get_tokens_unprocessed [function] [call site] 00056
8 pygments.lexers.haskell.CryptolLexer.get_tokens_unprocessed [function] [call site] 00057
8 pygments.lexers.scripting.LuaLexer.get_tokens_unprocessed [function] [call site] 00058
8 pygments.lexers.lilypond.LilyPondLexer.get_tokens_unprocessed [function] [call site] 00059
9 <builtin>.super [function] [call site] 00060
8 pygments.lexers.php.PhpLexer.get_tokens_unprocessed [function] [call site] 00061
9 stack.append [function] [call site] 00062
9 pygments.lexers.dylan.DylanLexer.get_tokens_unprocessed [function] [call site] 00063
9 pygments.lexers.haskell.CryptolLexer.get_tokens_unprocessed [function] [call site] 00064
9 pygments.lexers.scripting.LuaLexer.get_tokens_unprocessed [function] [call site] 00065
9 pygments.lexers.lilypond.LilyPondLexer.get_tokens_unprocessed [function] [call site] 00066
9 pygments.lexers.php.PhpLexer.get_tokens_unprocessed [function] [call site] 00067
9 pygments.lexers.erlang.ElixirLexer.get_tokens_unprocessed [function] [call site] 00068
10 pygments.lexers.dylan.DylanLexer.get_tokens_unprocessed [function] [call site] 00069
10 pygments.lexers.haskell.CryptolLexer.get_tokens_unprocessed [function] [call site] 00070
10 pygments.lexers.scripting.LuaLexer.get_tokens_unprocessed [function] [call site] 00071
10 pygments.lexers.lilypond.LilyPondLexer.get_tokens_unprocessed [function] [call site] 00072
10 pygments.lexers.php.PhpLexer.get_tokens_unprocessed [function] [call site] 00073
10 pygments.lexers.erlang.ElixirLexer.get_tokens_unprocessed [function] [call site] 00074
8 pygments.lexers.erlang.ElixirLexer.get_tokens_unprocessed [function] [call site] 00075
7 pygments.lexers.scripting.LuaLexer.get_tokens_unprocessed [function] [call site] 00076
7 pygments.lexers.lilypond.LilyPondLexer.get_tokens_unprocessed [function] [call site] 00077
7 pygments.lexers.php.PhpLexer.get_tokens_unprocessed [function] [call site] 00078
7 pygments.lexers.erlang.ElixirLexer.get_tokens_unprocessed [function] [call site] 00079
7 value.lower [function] [call site] 00080
6 pygments.lexers.haskell.CryptolLexer.get_tokens_unprocessed [function] [call site] 00081
6 pygments.lexers.scripting.LuaLexer.get_tokens_unprocessed [function] [call site] 00082
6 pygments.lexers.lilypond.LilyPondLexer.get_tokens_unprocessed [function] [call site] 00083
6 pygments.lexers.php.PhpLexer.get_tokens_unprocessed [function] [call site] 00084
6 pygments.lexers.erlang.ElixirLexer.get_tokens_unprocessed [function] [call site] 00085
6 value.split [function] [call site] 00086
6 <builtin>.len [function] [call site] 00087
6 <builtin>.len [function] [call site] 00088
5 pygments.lexers.templates.CheetahPythonLexer.get_tokens_unprocessed [function] [call site] 00089
6 pygments.lexer.Lexer.__init__ [function] [call site] 00090
7 pygments.util.get_bool_opt [function] [call site] 00091
8 options.get [function] [call site] 00092
8 <builtin>.isinstance [function] [call site] 00093
8 <builtin>.isinstance [function] [call site] 00094
8 <builtin>.bool [function] [call site] 00095
8 <builtin>.isinstance [function] [call site] 00096
8 string.lower [function] [call site] 00097
8 string.lower [function] [call site] 00098
7 pygments.util.get_bool_opt [function] [call site] 00099
7 pygments.util.get_bool_opt [function] [call site] 00100
7 pygments.util.get_int_opt [function] [call site] 00101
8 options.get [function] [call site] 00102
8 <builtin>.int [function] [call site] 00103
7 options.get [function] [call site] 00104
7 options.get [function] [call site] 00105
7 pygments.util.get_list_opt [function] [call site] 00106
8 options.get [function] [call site] 00107
8 <builtin>.isinstance [function] [call site] 00108
8 val.split [function] [call site] 00109
8 <builtin>.isinstance [function] [call site] 00110
8 <builtin>.list [function] [call site] 00111
7 pygments.lexer.Lexer.add_filter [function] [call site] 00112
8 <builtin>.isinstance [function] [call site] 00113
8 pygments.filters.get_filter_by_name [function] [call site] 00114
9 pygments.filters.find_filter_class [function] [call site] 00115
10 pygments.plugin.find_plugin_filters [function] [call site] 00116
11 pygments.plugin.iter_entry_points [function] [call site] 00117
11 entrypoint.load [function] [call site] 00118
6 pygments.lexers.dylan.DylanLexer.get_tokens_unprocessed [function] [call site] 00119
6 pygments.lexers.haskell.CryptolLexer.get_tokens_unprocessed [function] [call site] 00120
6 pygments.lexers.scripting.LuaLexer.get_tokens_unprocessed [function] [call site] 00121
6 pygments.lexers.lilypond.LilyPondLexer.get_tokens_unprocessed [function] [call site] 00122
6 pygments.lexers.php.PhpLexer.get_tokens_unprocessed [function] [call site] 00123
6 pygments.lexers.erlang.ElixirLexer.get_tokens_unprocessed [function] [call site] 00124
5 pygments.lexers.pascal.DelphiLexer.get_tokens_unprocessed [function] [call site] 00125
6 pygments.scanner.Scanner.__init__ [function] [call site] 00126
7 <builtin>.len [function] [call site] 00127
6 <builtin>.set [function] [call site] 00128
6 pygments.scanner.Scanner.scan [function] [call site] 00129
7 re.compile [function] [call site] 00130
7 m.start [function] [call site] 00131
7 m.end [function] [call site] 00132
7 m.group [function] [call site] 00133
6 pygments.scanner.Scanner.scan [function] [call site] 00134
6 scanner.match.startswith [function] [call site] 00135
6 pygments.scanner.Scanner.scan [function] [call site] 00136
6 pygments.scanner.Scanner.scan [function] [call site] 00137
6 pygments.scanner.Scanner.scan [function] [call site] 00138
6 pygments.scanner.Scanner.scan [function] [call site] 00139
6 pygments.scanner.Scanner.scan [function] [call site] 00140
6 scanner.match.lower [function] [call site] 00141
6 <builtin>.set [function] [call site] 00142
6 stack.append [function] [call site] 00143
6 pygments.scanner.Scanner.test [function] [call site] 00144
7 pygments.scanner.Scanner.check [function] [call site] 00145
8 re.compile [function] [call site] 00146
6 scanner.match.lower [function] [call site] 00147
6 block_labels.add [function] [call site] 00148
6 scanner.match.lower [function] [call site] 00149
6 block_labels.add [function] [call site] 00150
6 pygments.scanner.Scanner.scan [function] [call site] 00151
6 stack.append [function] [call site] 00152
6 pygments.scanner.Scanner.scan [function] [call site] 00153
6 stack.append [function] [call site] 00154
6 pygments.scanner.Scanner.scan [function] [call site] 00155
6 pygments.scanner.Scanner.scan [function] [call site] 00156
6 pygments.scanner.Scanner.scan [function] [call site] 00157
6 pygments.scanner.Scanner.scan [function] [call site] 00158
6 <builtin>.len [function] [call site] 00159
6 stack.pop [function] [call site] 00160
6 pygments.scanner.Scanner.get_char [function] [call site] 00161
7 pygments.scanner.Scanner.scan [function] [call site] 00162
6 pygments.scanner.Scanner.scan [function] [call site] 00163
6 pygments.scanner.Scanner.scan [function] [call site] 00164
6 stack.pop [function] [call site] 00165
6 pygments.scanner.Scanner.scan [function] [call site] 00166
6 pygments.scanner.Scanner.get_char [function] [call site] 00167
6 stack.pop [function] [call site] 00168
6 pygments.scanner.Scanner.scan [function] [call site] 00169
6 pygments.scanner.Scanner.scan [function] [call site] 00170
6 stack.pop [function] [call site] 00171
6 pygments.scanner.Scanner.scan [function] [call site] 00172
6 pygments.scanner.Scanner.get_char [function] [call site] 00173
6 stack.pop [function] [call site] 00174
6 pygments.scanner.Scanner.scan [function] [call site] 00175
6 pygments.scanner.Scanner.scan [function] [call site] 00176
6 stack.pop [function] [call site] 00177
6 pygments.scanner.Scanner.scan [function] [call site] 00178
6 scanner.match.startswith [function] [call site] 00179
6 pygments.scanner.Scanner.scan [function] [call site] 00180
6 pygments.scanner.Scanner.scan [function] [call site] 00181
6 stack.append [function] [call site] 00182
6 pygments.scanner.Scanner.scan [function] [call site] 00183
6 pygments.scanner.Scanner.scan [function] [call site] 00184
6 scanner.match.lower [function] [call site] 00185
6 pygments.scanner.Scanner.scan [function] [call site] 00186
6 pygments.scanner.Scanner.scan [function] [call site] 00187
6 pygments.scanner.Scanner.scan [function] [call site] 00188
6 pygments.scanner.Scanner.scan [function] [call site] 00189
6 pygments.scanner.Scanner.scan [function] [call site] 00190
6 pygments.scanner.Scanner.get_char [function] [call site] 00191
6 stack.pop [function] [call site] 00192
6 scanner.match.strip [function] [call site] 00193
5 pygments.formatters.latex.LatexEmbeddedLexer.get_tokens_unprocessed [function] [call site] 00194
6 pygments.formatters.latex.LatexEmbeddedLexer._find_safe_escape_tokens [function] [call site] 00195
7 pygments.formatters.latex.LatexEmbeddedLexer._filter_to [function] [call site] 00196
7 pygments.formatters.latex.LatexEmbeddedLexer.get_tokens_unprocessed [function] [call site] 00197
7 pygments.lexers.special.TextLexer.get_tokens_unprocessed [function] [call site] 00198
7 pygments.formatters.latex.LatexEmbeddedLexer._find_escape_tokens [function] [call site] 00199
8 text.partition [function] [call site] 00200
8 <builtin>.len [function] [call site] 00201
8 text.partition [function] [call site] 00202
8 <builtin>.len [function] [call site] 00203
8 <builtin>.len [function] [call site] 00204
8 <builtin>.len [function] [call site] 00205
8 <builtin>.len [function] [call site] 00206
8 <builtin>.len [function] [call site] 00207
6 <builtin>.len [function] [call site] 00208
6 insertions.append [function] [call site] 00209
6 insertion_buf.append [function] [call site] 00210
6 <builtin>.len [function] [call site] 00211
6 insertions.append [function] [call site] 00212
6 pygments.lexer.do_insertions [function] [call site] 00213
7 <builtin>.iter [function] [call site] 00214
7 <builtin>.next [function] [call site] 00215
7 <builtin>.len [function] [call site] 00216
7 <builtin>.len [function] [call site] 00217
7 <builtin>.len [function] [call site] 00218
7 <builtin>.next [function] [call site] 00219
7 <builtin>.len [function] [call site] 00220
7 <builtin>.len [function] [call site] 00221
7 <builtin>.len [function] [call site] 00222
7 <builtin>.next [function] [call site] 00223
6 pygments.formatters.latex.LatexEmbeddedLexer.get_tokens_unprocessed [function] [call site] 00224
6 pygments.lexers.special.TextLexer.get_tokens_unprocessed [function] [call site] 00225
5 pygments.lexers.dylan.DylanLexer.get_tokens_unprocessed [function] [call site] 00226
5 pygments.lexers.haskell.CryptolLexer.get_tokens_unprocessed [function] [call site] 00227
5 pygments.lexers.lilypond.LilyPondLexer.get_tokens_unprocessed [function] [call site] 00228
5 pygments.lexers.php.PhpLexer.get_tokens_unprocessed [function] [call site] 00229
5 pygments.lexers.erlang.ElixirLexer.get_tokens_unprocessed [function] [call site] 00230
5 pygments.lexers.data.JsonLexer.get_tokens_unprocessed [function] [call site] 00231
6 <builtin>.enumerate [function] [call site] 00232
6 queue.append [function] [call site] 00233
6 queue.append [function] [call site] 00234
6 queue.append [function] [call site] 00235
6 queue.append [function] [call site] 00236
6 queue.clear [function] [call site] 00237
6 queue.clear [function] [call site] 00238
6 queue.clear [function] [call site] 00239
6 queue.clear [function] [call site] 00240
6 queue.clear [function] [call site] 00241
6 queue.clear [function] [call site] 00242
4 pygments.filter.apply_filters [function] [call site] 00243
5 pygments.filter.apply_filters._apply [function] [call site] 00244
6 filter_.filter [function] [call site] 00245
3 <builtin>.isinstance [function] [call site] 00246
3 <builtin>.issubclass [function] [call site] 00247
2 pygments.format [function] [call site] 00248
3 <builtin>.getattr [function] [call site] 00249
3 io.BytesIO [function] [call site] 00250
3 io.StringIO [function] [call site] 00251
3 pygments.formatters.terminal256.Terminal256Formatter.format [function] [call site] 00252
4 pygments.formatters.terminal256.Terminal256Formatter.format [function] [call site] 00253
4 pygments.formatters.terminal.TerminalFormatter.format [function] [call site] 00254
5 pygments.formatters.terminal256.Terminal256Formatter.format [function] [call site] 00255
5 pygments.formatters.terminal.TerminalFormatter.format [function] [call site] 00256
3 pygments.formatters.terminal.TerminalFormatter.format [function] [call site] 00257
3 realoutfile.getvalue [function] [call site] 00258
3 pygments.formatters.terminal256.Terminal256Formatter.format [function] [call site] 00259
3 pygments.formatters.terminal.TerminalFormatter.format [function] [call site] 00260
3 <builtin>.isinstance [function] [call site] 00261
3 <builtin>.issubclass [function] [call site] 00262