Fuzz introspector: fuzz_grammar_match
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
10 6 ...fuzz_grammar_match.TestOneInput call site: {node_id} parsimonious.expressions.expression
3 73 parsimonious.expressions.Expression.match_core call site: {node_id} .isinstance
1 44 parsimonious.grammar.BootstrappingGrammar._expressions_from_rules call site: {node_id} parsimonious.expressions.Regex.__init__
1 93 parsimonious.expressions.Expression.match_core call site: {node_id} parsimonious.nodes.Node.__init__
1 97 parsimonious.expressions.OneOf._uncached_match call site: {node_id} .getattr

Fuzzer calltree

0 ...fuzz_grammar_match.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 fdp.ConsumeIntInRange [function] [call site] 00004
1 fdp.ConsumeUnicodeNoSurrogates [function] [call site] 00005
1 parsimonious.grammar.Grammar.__init__ [function] [call site] 00006
2 parsimonious.expressions.is_callable [function] [call site] 00007
3 .any [function] [call site] 00008
2 parsimonious.expressions.expression [function] [call site] 00009
3 inspect.ismethoddescriptor [function] [call site] 00010
3 .hasattr [function] [call site] 00011
3 inspect.getfullargspec [function] [call site] 00012
3 .len [function] [call site] 00013
3 inspect.ismethod [function] [call site] 00014
3 parsimonious.expressions.Expression.__init__ [function] [call site] 00015
2 more_rules.items [function] [call site] 00016
2 parsimonious.grammar.BootstrappingGrammar._expressions_from_rules [function] [call site] 00017
3 parsimonious.expressions.Regex.__init__ [function] [call site] 00018
4 .super [function] [call site] 00019
4 re.compile [function] [call site] 00020
3 parsimonious.expressions.Regex.__init__ [function] [call site] 00021
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00022
4 kwargs.get [function] [call site] 00023
4 .super [function] [call site] 00024
3 parsimonious.expressions.ZeroOrMore [function] [call site] 00025
4 .float [function] [call site] 00026
4 parsimonious.expressions.Quantifier.__init__ [function] [call site] 00027
5 .super [function] [call site] 00028
3 parsimonious.expressions.Literal.__init__ [function] [call site] 00029
4 .super [function] [call site] 00030
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00031
3 parsimonious.expressions.Regex.__init__ [function] [call site] 00032
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00033
3 parsimonious.expressions.Not [function] [call site] 00034
4 parsimonious.expressions.Lookahead.__init__ [function] [call site] 00035
5 .super [function] [call site] 00036
5 .bool [function] [call site] 00037
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00038
3 parsimonious.expressions.Regex.__init__ [function] [call site] 00039
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00040
3 parsimonious.expressions.Regex.__init__ [function] [call site] 00041
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00042
3 parsimonious.expressions.Literal.__init__ [function] [call site] 00043
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00044
3 parsimonious.expressions.Regex.__init__ [function] [call site] 00045
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00046
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00047
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00048
3 parsimonious.expressions.Literal.__init__ [function] [call site] 00049
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00050
3 parsimonious.expressions.OneOrMore [function] [call site] 00051
4 .float [function] [call site] 00052
4 parsimonious.expressions.Quantifier.__init__ [function] [call site] 00053
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00054
3 parsimonious.expressions.Literal.__init__ [function] [call site] 00055
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00056
3 parsimonious.expressions.OneOrMore [function] [call site] 00057
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00058
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00059
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00060
3 parsimonious.expressions.OneOrMore [function] [call site] 00061
3 parsimonious.expressions.Compound.__init__ [function] [call site] 00062
3 parsimonious.expressions.Expression.parse [function] [call site] 00063
4 parsimonious.expressions.Expression.match [function] [call site] 00064
5 parsimonious.exceptions.ParseError.__init__ [function] [call site] 00065
5 collections.defaultdict [function] [call site] 00066
5 parsimonious.expressions.Expression.match_core [function] [call site] 00067
6 .id [function] [call site] 00068
6 parsimonious.expressions.Sequence._uncached_match [function] [call site] 00069
7 m.match_core [function] [call site] 00070
7 children.append [function] [call site] 00071
7 parsimonious.nodes.Node.__init__ [function] [call site] 00072
6 parsimonious.expressions.expression.AdHocExpression._uncached_match [function] [call site] 00073
7 .isinstance [function] [call site] 00074
7 .isinstance [function] [call site] 00075
7 parsimonious.nodes.Node.__init__ [function] [call site] 00076
6 parsimonious.expressions.Literal._uncached_match [function] [call site] 00077
7 text.startswith [function] [call site] 00078
7 .len [function] [call site] 00079
7 parsimonious.nodes.Node.__init__ [function] [call site] 00080
6 parsimonious.expressions.Lookahead._uncached_match [function] [call site] 00081
7 parsimonious.nodes.Node.__init__ [function] [call site] 00082
6 parsimonious.expressions.Quantifier._uncached_match [function] [call site] 00083
7 .len [function] [call site] 00084
7 .len [function] [call site] 00085
7 children.append [function] [call site] 00086
7 .len [function] [call site] 00087
7 .len [function] [call site] 00088
7 parsimonious.nodes.Node.__init__ [function] [call site] 00089
6 parsimonious.expressions.Regex._uncached_match [function] [call site] 00090
7 m.span [function] [call site] 00091
7 parsimonious.nodes.Node.__init__ [function] [call site] 00092
6 parsimonious.expressions.TokenMatcher._uncached_match [function] [call site] 00093
7 parsimonious.nodes.Node.__init__ [function] [call site] 00094
6 parsimonious.expressions.OneOf._uncached_match [function] [call site] 00095
7 m.match_core [function] [call site] 00096
7 parsimonious.nodes.Node.__init__ [function] [call site] 00097
6 .getattr [function] [call site] 00098
4 .len [function] [call site] 00099
3 parsimonious.grammar.RuleVisitor.__init__ [function] [call site] 00100
3 parsimonious.nodes.NodeVisitor.visit [function] [call site] 00101
4 .getattr [function] [call site] 00102
4 parsimonious.nodes.NodeVisitor.visit [function] [call site] 00103
4 .isinstance [function] [call site] 00104
4 .type [function] [call site] 00105
2 parsimonious.grammar.Grammar._expressions_from_rules [function] [call site] 00106
3 parsimonious.grammar.Grammar.parse [function] [call site] 00107
4 parsimonious.grammar.Grammar._check_default_rule [function] [call site] 00108
3 parsimonious.grammar.RuleVisitor.__init__ [function] [call site] 00109
3 parsimonious.nodes.NodeVisitor.visit [function] [call site] 00110
2 exprs.items [function] [call site] 00111
2 .super [function] [call site] 00112
1 parsimonious.grammar.Grammar.match [function] [call site] 00113
2 parsimonious.grammar.Grammar._check_default_rule [function] [call site] 00114