Fuzz introspector: fuzz-aat
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
78 65 Stream::read_bytes call site: 00065 ItemVariationStore::parse_delta
38 145 Lookup::value call site: 00145 Lookup::parse
30 32 Stream::read_bytes call site: 00032 DeltaSetIndexMap::map
10 3 LazyArray16::len call site: 00003 u16_to_u8_vec
8 17 u16_to_u8_vec call site: 00017 Lookup::parse
4 26 Stream::read_bytes call site: 00026 BinarySearchTable::get
1 0 EP call site: 00000

Fuzzer calltree

0 fuzz_target [function] [call site] 00000
1 LazyArray16::len [function] [call site] 00001
2 LazyArray16::len [function] [call site] 00002
3 LazyArray16::len [function] [call site] 00003
1 Option::split_at [function] [call site] 00004
1 u16::from_be_bytes [function] [call site] 00005
1 LazyArray16::len [function] [call site] 00006
1 Some [function] [call site] 00007
1 u16::from_be_bytes [function] [call site] 00008
1 Writer::new [function] [call site] 00009
2 Vec::with_capacity [function] [call site] 00010
1 Self::unwrap [function] [call site] 00011
1 random_u16 [function] [call site] 00012
1 u16_to_u8_vec [function] [call site] 00013
2 Vec::with_capacity [function] [call site] 00014
2 LazyArray16::len [function] [call site] 00015
2 GenericStateEntry::has_push [function] [call site] 00016
2 GenericStateEntry::has_push [function] [call site] 00017
1 Lookup::parse [function] [call site] 00018
2 Stream::new [function] [call site] 00019
2 read::<u16> [function] [call site] 00020
2 read::<LookupFlags> [function] [call site] 00021
2 read::<u16> [function] [call site] 00022
2 Stream::read_array16 [function] [call site] 00023
3 usize::num_from [function] [call site] 00024
3 Stream::read_bytes [function] [call site] 00025
4 BinarySearchTable::get [function] [call site] 00026
5 BinarySearchTable::get [function] [call site] 00027
5 BinarySearchTable::get [function] [call site] 00028
5 LookupSegment::contains [function] [call site] 00029
5 Some [function] [call site] 00030
4 Stream::advance [function] [call site] 00031
4 Some [function] [call site] 00032
3 DeltaSetIndexMap::map [function] [call site] 00033
4 Stream::new [function] [call site] 00034
4 read::<u8> [function] [call site] 00035
4 read::<u8> [function] [call site] 00036
4 read::<u16> [function] [call site] 00037
4 read::<u32> [function] [call site] 00038
4 usize::num_from [function] [call site] 00039
4 ttfp_get_glyph_hor_advance [function] [call site] 00040
5 face_from_ptr [function] [call site] 00041
5 &'static [call site] 00042
6 ttfp_get_glyph_hor_advance [function] [call site] 00043
6 Face::is_variable [function] [call site] 00044
7 is_some [function] [call site] 00045
6 Table::advance_offset [function] [call site] 00046
7 DeltaSetIndexMap::new [function] [call site] 00047
7 BinarySearchTable::get [function] [call site] 00048
7 Offset16::to_usize [function] [call site] 00049
8 usize::num_from [function] [call site] 00050
7 DeltaSetIndexMap::map [function] [call site] 00051
8 Stream::new [function] [call site] 00052
8 read::<u8> [function] [call site] 00053
8 read::<u8> [function] [call site] 00054
8 read::<u16> [function] [call site] 00055
8 read::<u32> [function] [call site] 00056
8 usize::num_from [function] [call site] 00057
8 ttfp_get_glyph_hor_advance [function] [call site] 00058
8 usize::num_from [function] [call site] 00059
8 usize::try_from [function] [call site] 00060
8 ok [function] [call site] 00061
8 Stream::read_bytes [function] [call site] 00062
9 BinarySearchTable::get [function] [call site] 00063
9 Stream::advance [function] [call site] 00064
9 Some [function] [call site] 00065
8 usize::num_from [function] [call site] 00066
8 usize::num_from [function] [call site] 00067
8 Some [function] [call site] 00068
8 u16::try_from [function] [call site] 00069
8 ok [function] [call site] 00070
8 u16::try_from [function] [call site] 00071
8 ok [function] [call site] 00072
7 ItemVariationStore::parse_delta [function] [call site] 00073
8 BinarySearchTable::get [function] [call site] 00074
8 Stream::new_at [function] [call site] 00075
9 LazyArray16::len [function] [call site] 00076
9 Some [function] [call site] 00077
8 usize::num_from [function] [call site] 00078
8 read::<u16> [function] [call site] 00079
8 read::<u16> [function] [call site] 00080
8 read::<u16> [function] [call site] 00081
8 read_array16::<u16> [function] [call site] 00082
8 ttfp_get_glyph_hor_advance [function] [call site] 00083
8 usize::num_from [function] [call site] 00084
8 Self::checked_mul [function] [call site] 00085
8 usize::num_from [function] [call site] 00086
8 BinarySearchTable::get [function] [call site] 00087
9 BinarySearchTable::get [function] [call site] 00088
9 BinarySearchTable::get [function] [call site] 00089
9 LookupSegment::contains [function] [call site] 00090
9 Some [function] [call site] 00091
8 read::<i32> [function] [call site] 00092
8 usize::num_from [function] [call site] 00093
8 read::<i16> [function] [call site] 00094
8 VariationRegionList::evaluate_region [function] [call site] 00095
9 LazyArray16::into_iter [function] [call site] 00096
9 Self::IntoIter::enumerate [function] [call site] 00097
9 BinarySearchTable::get [function] [call site] 00098
9 RegionAxisCoordinatesRecord::evaluate_axis [function] [call site] 00099
10 usize::num_from [function] [call site] 00100
10 usize::num_from [function] [call site] 00101
10 usize::num_from [function] [call site] 00102
10 usize::num_from [function] [call site] 00103
9 BinarySearchTable::get [function] [call site] 00104
8 BinarySearchTable::get [function] [call site] 00105
8 usize::num_from [function] [call site] 00106
8 read::<i16> [function] [call site] 00107
8 usize::num_from [function] [call site] 00108
8 read::<i8> [function] [call site] 00109
8 VariationRegionList::evaluate_region [function] [call site] 00110
8 Some [function] [call site] 00111
6 Face::coords [function] [call site] 00112
7 VarCoords::as_slice [function] [call site] 00113
8 usize::num_from [function] [call site] 00114
6 Face::glyph_phantom_points [function] [call site] 00115
7 Face::glyph_phantom_points [function] [call site] 00116
8 Face::glyph_phantom_points [function] [call site] 00117
8 Face::coords [function] [call site] 00118
7 Face::coords [function] [call site] 00119
6 u16::try_num_from [function] [call site] 00120
7 i32::try_num_from [function] [call site] 00121
8 Some [function] [call site] 00122
7 Option::and_then [function] [call site] 00123
7 u16::try_from [function] [call site] 00124
7 ok [function] [call site] 00125
6 ttfp_get_glyph_hor_advance [function] [call site] 00126
5 Option::unwrap_or [function] [call site] 00127
4 usize::num_from [function] [call site] 00128
4 usize::try_from [function] [call site] 00129
4 ok [function] [call site] 00130
4 Stream::read_bytes [function] [call site] 00131
4 usize::num_from [function] [call site] 00132
4 usize::num_from [function] [call site] 00133
4 Some [function] [call site] 00134
4 u16::try_from [function] [call site] 00135
4 ok [function] [call site] 00136
4 u16::try_from [function] [call site] 00137
4 ok [function] [call site] 00138
2 LookupFlags::use_mark_filtering_set [function] [call site] 00139
2 Some [function] [call site] 00140
2 read::<u16> [function] [call site] 00141
2 Some [function] [call site] 00142
1 Lookup::value [function] [call site] 00143
2 Lookup::value [function] [call site] 00144
3 Lookup::value [function] [call site] 00145
1 ttf_parser::GlyphId [function] [call site] 00146
1 Lookup::value [function] [call site] 00147
1 ttf_parser::GlyphId [function] [call site] 00148
1 random_u16 [function] [call site] 00149
1 u16_to_u8_vec [function] [call site] 00150
1 Lookup::parse [function] [call site] 00151
1 Lookup::value [function] [call site] 00152
1 ttf_parser::GlyphId [function] [call site] 00153
1 Lookup::value [function] [call site] 00154
1 ttf_parser::GlyphId [function] [call site] 00155
1 random_u16 [function] [call site] 00156
1 u16_to_u8_vec [function] [call site] 00157
1 Lookup::parse [function] [call site] 00158
1 Lookup::value [function] [call site] 00159
1 ttf_parser::GlyphId [function] [call site] 00160
1 Lookup::value [function] [call site] 00161
1 ttf_parser::GlyphId [function] [call site] 00162
1 random_u16 [function] [call site] 00163
1 u16_to_u8_vec [function] [call site] 00164
1 Lookup::parse [function] [call site] 00165
1 Lookup::value [function] [call site] 00166
1 ttf_parser::GlyphId [function] [call site] 00167
1 Lookup::value [function] [call site] 00168
1 ttf_parser::GlyphId [function] [call site] 00169
1 random_u16 [function] [call site] 00170
1 u16_to_u8_vec [function] [call site] 00171
1 Lookup::parse [function] [call site] 00172
1 Lookup::value [function] [call site] 00173
1 ttf_parser::GlyphId [function] [call site] 00174
1 Lookup::value [function] [call site] 00175
1 ttf_parser::GlyphId [function] [call site] 00176
1 random_u16 [function] [call site] 00177
1 u16_to_u8_vec [function] [call site] 00178
1 Lookup::parse [function] [call site] 00179
1 Lookup::value [function] [call site] 00180
1 ttf_parser::GlyphId [function] [call site] 00181
1 Lookup::value [function] [call site] 00182
1 ttf_parser::GlyphId [function] [call site] 00183