Project: fonttools

Language python
OSS-Fuzz project link
Build status: Fuzzers succeeding: Build log
Build status: Code coverage succeeding: Build log
Build status: Fuzz Introspector succeeding: Build log
Fuzzer count 4
Lines of code 6912
Lines covered 1597
Code coverage 23.10%
Code coverage report Report link
Static reachability 2.28%
Fuzz Introspector report Report link

Historical progression

Functions of interest to fuzz

This section outlines functions that may be of interest to fuzz. They are based on ranking functions that have a lot of complexity but currently exhibit low code coverage. The complexity is calculated based on the function itself as well as the functions called by the given function, i.e. the tree of code that the function triggers.


This is only a minor amount of introspection information available for this project. Please consult the Fuzz Introspector report for more information, e.g. the introspection table of all functions in the target project available here.

Function name Function source file Accumulated cyclomatic complexity Code coverage
fontTools.varLib.main fontTools.varLib 2092 0.0%
fontTools.varLib.build_many fontTools.varLib 1967 0.0%
fontTools.feaLib.__main__.main fontTools.feaLib.__main__ 1873 0.0%
fontTools.varLib.build fontTools.varLib 1712 0.0%
fontTools.varLib.instancer.main fontTools.varLib.instancer 1669 0.0%
fontTools.fontBuilder.FontBuilder.addOpenTypeFeatures fontTools.fontBuilder 1390 0.0%
fontTools.feaLib.builder.addOpenTypeFeaturesFromString fontTools.feaLib.builder 1387 0.0%
fontTools.feaLib.builder.addOpenTypeFeatures fontTools.feaLib.builder 1381 0.0%
fontTools.feaLib.builder.Builder.build fontTools.feaLib.builder 1312 0.0%
fontTools.varLib.interpolatable.main fontTools.varLib.interpolatable 1165 0.0%