Fuzz introspector: fuzz_compile
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
114 329 fontTools.ttLib.ttFont.getTableClass call site: {node_id} fontTools.ttLib.ttFont.reorderFontTables
64 247 fontTools.ttLib.sfnt.WOFFFlavorData.__init__ call site: {node_id} fontTools.ttLib.ttFont.TTFont.save
33 91 fontTools.misc.sstruct.unpack call site: {node_id} fontTools.misc.macRes.ResourceReader._readFile
24 35 fontTools.ttLib.ttFont.TTFont.__init__ call site: {node_id} fontTools.ttLib.macUtils.getSFNTResIndices
13 130 fontTools.ttLib.macUtils.getSFNTResIndices call site: {node_id} fontTools.ttLib.macUtils.SFNTResourceReader.__init__
12 3 ...fuzz_compile.TestOneInput call site: {node_id} fontTools.ttLib.ttFont.TTFont.__init__
10 24 fontTools.misc.configTools.AbstractConfig.__init__ call site: {node_id} fontTools.misc.configTools.AbstractConfig.set
8 174 fontTools.ttLib.sfnt.readTTCHeader call site: {node_id} fontTools.misc.sstruct.unpack
6 144 fontTools.ttLib.ttFont.TTFont.__init__ call site: {node_id} .hasattr
5 79 fontTools.misc.sstruct.getformat call site: {node_id} m.group
4 61 fontTools.misc.textTools.tobytes call site: {node_id} collections.abc.MutableMapping.encode
4 125 fontTools.ttLib.macUtils.getSFNTResIndices call site: {node_id} fontTools.misc.macRes.ResourceReader.countResources

Fuzzer calltree

0 ...fuzz_compile.TestOneInput [function] [call site] 00000
1 os.path.isfile [function] [call site] 00003
1 fontTools.ttx.Options.__init__ [function] [call site] 00004
1 fontTools.ttx.ttCompile [function] [call site] 00013
2 fontTools.ttLib.ttFont.TTFont.__init__ [function] [call site] 00015
3 fontTools.misc.loggingTools.deprecateArgument [function] [call site] 00017
4 warnings.warn [function] [call site] 00018
3 .isinstance [function] [call site] 00020
3 fontTools.misc.configTools.AbstractConfig.__init__ [function] [call site] 00022
4 .isinstance [function] [call site] 00023
4 values_dict.items [function] [call site] 00024
4 fontTools.misc.configTools.AbstractConfig.set [function] [call site] 00025
5 fontTools.misc.configTools.AbstractConfig._resolve_option [function] [call site] 00026
6 .isinstance [function] [call site] 00027
6 fontTools.misc.configTools.Options.is_registered [function] [call site] 00028
6 typing.MutableMapping.options.is_registered [function] [call site] 00029
6 .isinstance [function] [call site] 00030
5 log.debug [function] [call site] 00032
5 option.parse [function] [call site] 00033
5 option.validate [function] [call site] 00034
3 fontTools.ttLib.macUtils.getSFNTResIndices [function] [call site] 00036
4 fontTools.misc.macRes.ResourceReader.__init__ [function] [call site] 00037
5 collections.OrderedDict [function] [call site] 00038
5 fontTools.misc.macRes.ResourceReader.openResourceFork [function] [call site] 00040
6 sys.stdin.buffer.__fspath__ [function] [call site] 00042
6 io.BytesIO.__fspath__ [function] [call site] 00043
6 resfork.read [function] [call site] 00045
6 io.BytesIO [function] [call site] 00046
5 fontTools.misc.macRes.ResourceReader._readFile [function] [call site] 00047
6 fontTools.misc.macRes.ResourceReader._readHeaderAndMap [function] [call site] 00048
7 io.BytesIO.seek [function] [call site] 00049
7 sys.stdin.buffer.seek [function] [call site] 00050
7 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00051
8 io.BytesIO.seek [function] [call site] 00052
8 sys.stdin.buffer.seek [function] [call site] 00053
8 sys.stdin.buffer.tell [function] [call site] 00054
8 io.BytesIO.tell [function] [call site] 00055
8 sys.stdin.buffer.read [function] [call site] 00056
8 io.BytesIO.read [function] [call site] 00057
7 fontTools.misc.sstruct.unpack [function] [call site] 00059
8 fontTools.misc.textTools.tobytes [function] [call site] 00060
9 .isinstance [function] [call site] 00061
9 collections.abc.MutableMapping.encode [function] [call site] 00062
9 os.linesep.encode [function] [call site] 00063
9 types.SimpleNamespace.encode [function] [call site] 00064
9 collections.abc.Sequence.data.encode [function] [call site] 00065
8 fontTools.misc.sstruct.getformat [function] [call site] 00067
9 fontTools.misc.textTools.tostr [function] [call site] 00068
10 .isinstance [function] [call site] 00069
10 os.linesep.decode [function] [call site] 00070
9 _emptyRE.match [function] [call site] 00072
9 _extraRE.match [function] [call site] 00073
9 _elementRE.match [function] [call site] 00075
9 names.append [function] [call site] 00078
8 .isinstance [function] [call site] 00085
8 struct.unpack [function] [call site] 00086
8 fontTools.misc.fixedTools.fixedToFloat [function] [call site] 00089
8 .isinstance [function] [call site] 00090
8 fontTools.misc.textTools.tostr [function] [call site] 00091
7 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00092
7 fontTools.misc.sstruct.unpack [function] [call site] 00093
6 fontTools.misc.macRes.ResourceReader._readTypeList [function] [call site] 00094
7 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00095
7 struct.unpack [function] [call site] 00096
7 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00098
7 fontTools.misc.sstruct.unpack [function] [call site] 00099
7 fontTools.misc.textTools.tostr [function] [call site] 00100
7 fontTools.misc.macRes.ResourceReader._readReferenceList [function] [call site] 00101
8 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00103
8 fontTools.misc.macRes.Resource.__init__ [function] [call site] 00104
8 fontTools.misc.macRes.Resource.decompile [function] [call site] 00105
9 fontTools.misc.sstruct.unpack [function] [call site] 00106
9 fontTools.misc.textTools.bytesjoin [function] [call site] 00107
10 fontTools.misc.textTools.tobytes [function] [call site] 00108
10 fontTools.misc.textTools.tobytes [function] [call site] 00109
9 struct.unpack [function] [call site] 00110
9 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00111
9 struct.unpack [function] [call site] 00112
9 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00113
9 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00114
9 struct.unpack [function] [call site] 00115
9 fontTools.misc.macRes.ResourceReader._read [function] [call site] 00116
9 struct.unpack [function] [call site] 00117
9 fontTools.misc.textTools.tostr [function] [call site] 00118
8 resources.append [function] [call site] 00119
5 fontTools.misc.macRes.ResourceReader.openDataFork [function] [call site] 00120
6 datafork.read [function] [call site] 00122
6 io.BytesIO [function] [call site] 00123
5 fontTools.misc.macRes.ResourceReader._readFile [function] [call site] 00124
4 fontTools.misc.macRes.ResourceReader.getIndices [function] [call site] 00125
5 fontTools.misc.macRes.ResourceReader.countResources [function] [call site] 00126
4 fontTools.misc.macRes.ResourceReader.close [function] [call site] 00130
5 sys.stdin.buffer.close [function] [call site] 00131
5 io.BytesIO.close [function] [call site] 00132
3 fontTools.ttLib.macUtils.SFNTResourceReader.__init__ [function] [call site] 00133
4 fontTools.misc.macRes.ResourceReader.__init__ [function] [call site] 00134
4 .isinstance [function] [call site] 00135
4 fontTools.misc.macRes.ResourceReader.getNamedResource [function] [call site] 00136
5 fontTools.misc.textTools.tostr [function] [call site] 00137
5 collections.abc.MutableMapping.get [function] [call site] 00138
4 fontTools.misc.macRes.ResourceReader.getIndResource [function] [call site] 00139
4 fontTools.misc.macRes.ResourceReader.close [function] [call site] 00140
3 fontTools.ttLib.macUtils.SFNTResourceReader.__init__ [function] [call site] 00143
3 io.BytesIO.seekable [function] [call site] 00146
3 sys.stdin.buffer.seekable [function] [call site] 00147
3 io.BytesIO.seek [function] [call site] 00149
3 sys.stdin.buffer.seek [function] [call site] 00150
3 io.BytesIO.seek [function] [call site] 00151
3 sys.stdin.buffer.seek [function] [call site] 00152
3 sys.stdin.buffer.read [function] [call site] 00153
3 io.BytesIO.read [function] [call site] 00154
3 io.BytesIO [function] [call site] 00155
3 sys.stdin.buffer.close [function] [call site] 00157
3 io.BytesIO.close [function] [call site] 00158
3 fontTools.ttLib.sfnt.SFNTReader.__init__ [function] [call site] 00159
4 io.BytesIO.seek [function] [call site] 00160
4 sys.stdin.buffer.seek [function] [call site] 00161
4 sys.stdin.buffer.read [function] [call site] 00162
4 io.BytesIO.read [function] [call site] 00163
4 io.BytesIO.seek [function] [call site] 00164
4 sys.stdin.buffer.seek [function] [call site] 00165
4 fontTools.ttLib.sfnt.readTTCHeader [function] [call site] 00166
5 io.BytesIO.seek [function] [call site] 00167
5 sys.stdin.buffer.seek [function] [call site] 00168
5 sys.stdin.buffer.read [function] [call site] 00169
5 io.BytesIO.read [function] [call site] 00170
5 types.SimpleNamespace [function] [call site] 00172
5 fontTools.misc.sstruct.unpack [function] [call site] 00173
5 struct.unpack [function] [call site] 00174
5 sys.stdin.buffer.read [function] [call site] 00175
5 io.BytesIO.read [function] [call site] 00176
4 io.BytesIO.seek [function] [call site] 00177
4 sys.stdin.buffer.seek [function] [call site] 00178
4 sys.stdin.buffer.read [function] [call site] 00179
4 io.BytesIO.read [function] [call site] 00180
4 fontTools.misc.sstruct.unpack [function] [call site] 00182
4 sys.stdin.buffer.read [function] [call site] 00183
4 io.BytesIO.read [function] [call site] 00184
4 fontTools.misc.sstruct.unpack [function] [call site] 00186
4 sys.stdin.buffer.read [function] [call site] 00187
4 io.BytesIO.read [function] [call site] 00188
4 fontTools.misc.sstruct.unpack [function] [call site] 00190
4 fontTools.ttLib.sfnt.WOFFDirectoryEntry.__init__ [function] [call site] 00192
4 fontTools.ttLib.sfnt.DirectoryEntry.__init__ [function] [call site] 00195
4 fontTools.ttLib.sfnt.DirectoryEntry.__init__ [function] [call site] 00196
4 fontTools.ttLib.woff2.WOFF2DirectoryEntry.fromFile [function] [call site] 00197
5 sys.stdin.buffer.tell [function] [call site] 00198
5 io.BytesIO.tell [function] [call site] 00199
5 sys.stdin.buffer.read [function] [call site] 00200
5 io.BytesIO.read [function] [call site] 00201
5 fontTools.ttLib.woff2.WOFF2DirectoryEntry.fromString [function] [call site] 00202
6 fontTools.misc.sstruct.unpack2 [function] [call site] 00204
7 fontTools.misc.sstruct.calcsize [function] [call site] 00205
8 fontTools.misc.sstruct.getformat [function] [call site] 00206
8 struct.calcsize [function] [call site] 00207
7 fontTools.misc.sstruct.unpack [function] [call site] 00208
6 fontTools.misc.sstruct.unpack2 [function] [call site] 00210
6 fontTools.ttLib.woff2.unpackBase128 [function] [call site] 00211
7 fontTools.misc.textTools.byteord [function] [call site] 00213
7 fontTools.misc.textTools.byteord [function] [call site] 00218
6 fontTools.ttLib.woff2.unpackBase128 [function] [call site] 00219
5 io.BytesIO.seek [function] [call site] 00222
5 sys.stdin.buffer.seek [function] [call site] 00223
4 fontTools.ttLib.sfnt.DirectoryEntry.fromFile [function] [call site] 00224
5 sys.stdin.buffer.read [function] [call site] 00225
5 io.BytesIO.read [function] [call site] 00226
5 fontTools.misc.sstruct.unpack [function] [call site] 00227
4 tables.items [function] [call site] 00228
4 collections.OrderedDict [function] [call site] 00230
4 fontTools.ttLib.sfnt.WOFFFlavorData.__init__ [function] [call site] 00231
5 io.BytesIO.seek [function] [call site] 00232
5 sys.stdin.buffer.seek [function] [call site] 00233
5 sys.stdin.buffer.read [function] [call site] 00234
5 io.BytesIO.read [function] [call site] 00235
5 fontTools.ttLib.woff2.WOFF2FlavorData._decompress [function] [call site] 00237
6 brotlicffi.decompress [function] [call site] 00238
6 brotli.decompress [function] [call site] 00239
5 fontTools.ttLib.sfnt.WOFFFlavorData._decompress [function] [call site] 00240
6 zlib.decompress [function] [call site] 00241
5 io.BytesIO.seek [function] [call site] 00243
5 sys.stdin.buffer.seek [function] [call site] 00244
5 sys.stdin.buffer.read [function] [call site] 00245
5 io.BytesIO.read [function] [call site] 00246
2 fontTools.ttLib.ttFont.TTFont.importXML [function] [call site] 00248
3 fontTools.misc.loggingTools.deprecateArgument [function] [call site] 00249
3 fontTools.ttLib.ttFont.TTFont.getGlyphOrder [function] [call site] 00250
4 cff.getGlyphOrder [function] [call site] 00251
4 fontTools.ttLib.ttFont.TTFont._getGlyphNamesFromCmap [function] [call site] 00252
5 fontTools.ttLib.ttFont.TTFont.isLoaded [function] [call site] 00253
5 fontTools.ttLib.ttFont.TTFont._makeGlyphName [function] [call site] 00258
5 useCount.get [function] [call site] 00259
4 log.warning [function] [call site] 00261
4 fontTools.ttLib.ttFont.TTFont._getGlyphNamesFromCmap [function] [call site] 00262
4 fontTools.ttLib.ttFont.TTFont._getGlyphNamesFromCmap [function] [call site] 00263
3 fontTools.misc.xmlReader.XMLReader.__init__ [function] [call site] 00264
4 fontTools.misc.loggingTools.deprecateArgument [function] [call site] 00267
3 fontTools.misc.xmlReader.XMLReader.read [function] [call site] 00268
4 sys.stdin.seek [function] [call site] 00269
4 sys.stdin.tell [function] [call site] 00270
4 sys.stdin.seek [function] [call site] 00271
4 fontTools.misc.xmlReader.XMLReader._parseFile [function] [call site] 00272
5 xml.parsers.expat.ParserCreate [function] [call site] 00273
5 sys.stdin.read [function] [call site] 00274
5 xml.parsers.expat.ParserCreate.Parse [function] [call site] 00275
5 xml.parsers.expat.ParserCreate.Parse [function] [call site] 00277
4 fontTools.misc.xmlReader.XMLReader.close [function] [call site] 00278
5 sys.stdin.close [function] [call site] 00279
2 os.path.getmtime [function] [call site] 00280
2 fontTools.misc.timeTools.timestampSinceEpoch [function] [call site] 00281
2 fontTools.ttLib.ttFont.TTFont.save [function] [call site] 00283
3 io.BytesIO [function] [call site] 00285
3 fontTools.ttLib.ttFont.TTFont._save [function] [call site] 00286
4 fontTools.ttLib.ttFont.TTFont.keys [function] [call site] 00287
5 fontTools.ttLib.sfnt.SFNTReader.keys [function] [call site] 00289
6 collections.OrderedDict.keys [function] [call site] 00290
5 keys.append [function] [call site] 00292
5 keys.remove [function] [call site] 00293
5 fontTools.ttLib.ttFont.sortedTagList [function] [call site] 00294
6 tagList.remove [function] [call site] 00296
6 tagList.append [function] [call site] 00297
6 orderedTables.append [function] [call site] 00298
6 tagList.remove [function] [call site] 00299
6 orderedTables.extend [function] [call site] 00300
4 tags.remove [function] [call site] 00302
4 fontTools.ttLib.sfnt.SFNTWriter.__init__ [function] [call site] 00304
5 io.BytesIO.tell [function] [call site] 00305
5 io.BytesIO.seek [function] [call site] 00306
5 io.BytesIO.tell [function] [call site] 00307
5 io.BytesIO.write [function] [call site] 00308
5 collections.OrderedDict [function] [call site] 00309
4 fontTools.ttLib.ttFont.TTFont._writeTable [function] [call site] 00310
5 fontTools.ttLib.ttFont.getTableClass [function] [call site] 00311
6 fontTools.ttLib.ttFont.getCustomTableClass [function] [call site] 00312
7 importlib.import_module [function] [call site] 00313
6 fontTools.ttLib.ttFont.getTableModule [function] [call site] 00315
7 fontTools.ttLib.ttFont.tagToIdentifier [function] [call site] 00316
8 fontTools.ttLib.ttFont._escapechar [function] [call site] 00319
9 fontTools.misc.textTools.byteord [function] [call site] 00322
7 .__import__ [function] [call site] 00325
6 fontTools.ttLib.ttFont.tagToIdentifier [function] [call site] 00328
5 fontTools.ttLib.ttFont.TTFont._writeTable [function] [call site] 00330
5 done.append [function] [call site] 00331
5 done.append [function] [call site] 00332
5 fontTools.ttLib.ttFont.TTFont.getTableData [function] [call site] 00333
6 fontTools.ttLib.ttFont.TTFont.isLoaded [function] [call site] 00334
6 log.debug [function] [call site] 00335
6 log.debug [function] [call site] 00336
5 tableCache.get [function] [call site] 00337
5 log.debug [function] [call site] 00338
5 fontTools.ttLib.sfnt.SFNTWriter.setEntry [function] [call site] 00339
5 log.debug [function] [call site] 00340
4 fontTools.ttLib.sfnt.SFNTWriter.close [function] [call site] 00341
5 collections.OrderedDict.items [function] [call site] 00342
5 fontTools.ttLib.sfnt.WOFFFlavorData.__init__ [function] [call site] 00346
5 struct.unpack [function] [call site] 00348
5 io.BytesIO.seek [function] [call site] 00350
5 io.BytesIO.tell [function] [call site] 00351
5 fontTools.ttLib.sfnt.compress [function] [call site] 00352
6 zopfli.zlib.compress [function] [call site] 00353
6 zlib.compress [function] [call site] 00354
6 zopfli.zlib.compress [function] [call site] 00355
6 zlib.compress [function] [call site] 00356
5 io.BytesIO.write [function] [call site] 00358
5 io.BytesIO.seek [function] [call site] 00359
5 io.BytesIO.tell [function] [call site] 00360
5 io.BytesIO.write [function] [call site] 00361
5 io.BytesIO.tell [function] [call site] 00362
5 io.BytesIO.write [function] [call site] 00364
5 io.BytesIO.seek [function] [call site] 00365
5 io.BytesIO.tell [function] [call site] 00366
5 fontTools.misc.sstruct.pack [function] [call site] 00367
6 fontTools.misc.sstruct.getformat [function] [call site] 00368
6 .isinstance [function] [call site] 00369
6 fontTools.misc.fixedTools.floatToFixed [function] [call site] 00370
7 fontTools.misc.roundTools.otRound [function] [call site] 00371
6 .isinstance [function] [call site] 00374
6 fontTools.misc.textTools.tobytes [function] [call site] 00375
6 elements.append [function] [call site] 00376
6 struct.pack [function] [call site] 00378
5 io.BytesIO.seek [function] [call site] 00379
5 entry.toString [function] [call site] 00380
5 fontTools.ttLib.sfnt.SFNTWriter.writeMasterChecksum [function] [call site] 00381
6 fontTools.ttLib.sfnt.SFNTWriter._calcMasterChecksum [function] [call site] 00382
7 collections.OrderedDict.keys [function] [call site] 00383
7 checksums.append [function] [call site] 00387
7 fontTools.misc.sstruct.pack [function] [call site] 00388
7 collections.OrderedDict.items [function] [call site] 00389
7 fontTools.ttLib.sfnt.DirectoryEntry.__init__ [function] [call site] 00391
7 fontTools.ttLib.sfnt.DirectoryEntry.toString [function] [call site] 00392
8 fontTools.misc.sstruct.pack [function] [call site] 00393
7 fontTools.ttLib.woff2.WOFF2DirectoryEntry.toString [function] [call site] 00394
8 fontTools.misc.textTools.bytechr [function] [call site] 00395
8 fontTools.misc.textTools.Tag.tobytes [function] [call site] 00397
8 struct.pack [function] [call site] 00398
8 fontTools.ttLib.woff2.packBase128 [function] [call site] 00399
9 fontTools.ttLib.woff2.base128Size [function] [call site] 00400
9 struct.pack [function] [call site] 00402
8 fontTools.ttLib.woff2.packBase128 [function] [call site] 00403
7 fontTools.ttLib.sfnt.calcChecksum [function] [call site] 00406
7 checksums.append [function] [call site] 00413
6 io.BytesIO.seek [function] [call site] 00415
6 struct.pack [function] [call site] 00416
6 io.BytesIO.write [function] [call site] 00417
5 io.BytesIO.seek [function] [call site] 00418
5 io.BytesIO.write [function] [call site] 00419
4 fontTools.ttLib.sfnt.SFNTWriter.reordersTables [function] [call site] 00420
3 fontTools.ttLib.sfnt.SFNTReader.keys [function] [call site] 00421
3 io.BytesIO.flush [function] [call site] 00423
3 io.BytesIO [function] [call site] 00424
3 fontTools.ttLib.ttFont.reorderFontTables [function] [call site] 00425
4 io.BytesIO.seek [function] [call site] 00426
4 io.BytesIO.seek [function] [call site] 00427
4 fontTools.ttLib.sfnt.SFNTReader.__init__ [function] [call site] 00428
4 fontTools.ttLib.sfnt.SFNTWriter.__init__ [function] [call site] 00429
4 fontTools.ttLib.sfnt.SFNTReader.keys [function] [call site] 00431
4 fontTools.ttLib.ttFont.sortedTagList [function] [call site] 00433
4 fontTools.ttLib.sfnt.SFNTWriter.close [function] [call site] 00434
3 io.BytesIO.close [function] [call site] 00435
3 io.BytesIO.getvalue [function] [call site] 00437
3 sys.stdout.buffer.write [function] [call site] 00438
3 io.BytesIO.write [function] [call site] 00439
3 io.BytesIO.getvalue [function] [call site] 00440
3 sys.stdout.buffer.write [function] [call site] 00441
3 io.BytesIO.write [function] [call site] 00442
3 io.BytesIO.close [function] [call site] 00443