Fuzz introspector: fuzz_emitter
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
62 2 ...fuzz_emitter.TestOneInput call site: 00002 yaml.loader.Loader.__init__
8 66 ...fuzz_emitter.TestOneInput call site: 00066 yaml.dumper.Dumper.__init__

Fuzzer calltree

0 ...fuzz_emitter.TestOneInput [function] [call site] 00000
1 io.BytesIO [function] [call site] 00001
1 yaml.parse [function] [call site] 00002
2 yaml.loader.Loader.__init__ [function] [call site] 00003
3 yaml.reader.Reader.__init__ [function] [call site] 00004
4 <builtin>.isinstance [function] [call site] 00005
4 yaml.reader.Reader.check_printable [function] [call site] 00006
5 match.group [function] [call site] 00007
5 <builtin>.len [function] [call site] 00008
5 match.start [function] [call site] 00009
4 <builtin>.isinstance [function] [call site] 00010
4 yaml.reader.Reader.determine_encoding [function] [call site] 00011
5 <builtin>.len [function] [call site] 00012
5 yaml.reader.Reader.update_raw [function] [call site] 00013
6 <builtin>.len [function] [call site] 00014
5 <builtin>.isinstance [function] [call site] 00015
5 yaml.reader.Reader.update [function] [call site] 00016
6 <builtin>.len [function] [call site] 00017
6 yaml.reader.Reader.update_raw [function] [call site] 00018
6 codecs.utf_16_le_decode [function] [call site] 00019
6 codecs.utf_8_decode [function] [call site] 00020
6 codecs.utf_16_be_decode [function] [call site] 00021
6 <builtin>.len [function] [call site] 00022
6 <builtin>.len [function] [call site] 00023
6 yaml.reader.Reader.check_printable [function] [call site] 00024
4 <builtin>.getattr [function] [call site] 00025
4 yaml.reader.Reader.determine_encoding [function] [call site] 00026
3 yaml.scanner.Scanner.__init__ [function] [call site] 00027
4 yaml.scanner.Scanner.fetch_stream_start [function] [call site] 00028
5 yaml.tokens.StreamStartToken.__init__ [function] [call site] 00029
3 yaml.parser.Parser.__init__ [function] [call site] 00030
3 yaml.composer.Composer.__init__ [function] [call site] 00031
3 yaml.constructor.BaseConstructor.__init__ [function] [call site] 00032
3 yaml.resolver.BaseResolver.__init__ [function] [call site] 00033
2 yaml.loader.BaseLoader.__init__ [function] [call site] 00034
3 yaml.reader.Reader.__init__ [function] [call site] 00035
3 yaml.scanner.Scanner.__init__ [function] [call site] 00036
3 yaml.parser.Parser.__init__ [function] [call site] 00037
3 yaml.composer.Composer.__init__ [function] [call site] 00038
3 yaml.constructor.BaseConstructor.__init__ [function] [call site] 00039
3 yaml.resolver.BaseResolver.__init__ [function] [call site] 00040
2 yaml.loader.SafeLoader.__init__ [function] [call site] 00041
3 yaml.reader.Reader.__init__ [function] [call site] 00042
3 yaml.scanner.Scanner.__init__ [function] [call site] 00043
3 yaml.parser.Parser.__init__ [function] [call site] 00044
3 yaml.composer.Composer.__init__ [function] [call site] 00045
3 yaml.constructor.BaseConstructor.__init__ [function] [call site] 00046
3 yaml.resolver.BaseResolver.__init__ [function] [call site] 00047
2 yaml.loader.UnsafeLoader.__init__ [function] [call site] 00048
3 yaml.reader.Reader.__init__ [function] [call site] 00049
3 yaml.scanner.Scanner.__init__ [function] [call site] 00050
3 yaml.parser.Parser.__init__ [function] [call site] 00051
3 yaml.composer.Composer.__init__ [function] [call site] 00052
3 yaml.constructor.BaseConstructor.__init__ [function] [call site] 00053
3 yaml.resolver.BaseResolver.__init__ [function] [call site] 00054
2 yaml.loader.FullLoader.__init__ [function] [call site] 00055
3 yaml.reader.Reader.__init__ [function] [call site] 00056
3 yaml.scanner.Scanner.__init__ [function] [call site] 00057
3 yaml.parser.Parser.__init__ [function] [call site] 00058
3 yaml.composer.Composer.__init__ [function] [call site] 00059
3 yaml.constructor.BaseConstructor.__init__ [function] [call site] 00060
3 yaml.resolver.BaseResolver.__init__ [function] [call site] 00061
2 loader.check_event [function] [call site] 00062
2 loader.get_event [function] [call site] 00063
2 loader.dispose [function] [call site] 00064
1 <builtin>.list [function] [call site] 00065
1 yaml.emit [function] [call site] 00066
2 io.StringIO [function] [call site] 00067
2 yaml.dumper.Dumper.__init__ [function] [call site] 00068
3 yaml.emitter.Emitter.__init__ [function] [call site] 00069
3 yaml.serializer.Serializer.__init__ [function] [call site] 00070
3 yaml.representer.BaseRepresenter.__init__ [function] [call site] 00071
3 yaml.resolver.BaseResolver.__init__ [function] [call site] 00072
2 dumper.emit [function] [call site] 00073
2 dumper.dispose [function] [call site] 00074
1 yaml.parse [function] [call site] 00075