Fuzz introspector

Table of contents

Project overview
High level conclusions
Reachability and coverage overview
Fuzzers overview
Project functions overview
Fuzzer details
Fuzzer: assimp_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Analyses and suggestions
Optimal target analysis
Remaining optimal interesting functions
All functions overview
Runtime coverage analysis
Complex functions with low coverage

Project overview

High level conclusions

Fuzzers reach 1.346% of cyclomatic complexity. Improvements could be made
Fuzzers reach 1.318% of all functions. Improvements need to be made
Fuzzer assimp_fuzzer is blocked: runtime coverage only covers 0.0% of its reachable functions.

Reachability and coverage overview

Functions statically reachable by fuzzers
1.32%
274/20786
Cyclomatic complexity statically reachable by fuzzers
1.35%
1510/112121
Functions covered at runtime
0

Fuzzers overview

Fuzzer Fuzzer filename Functions Reached Functions unreached Fuzzer depth Files reached Basic blocks reached Cyclomatic complexity Details
assimp_fuzzer /src/assimp/fuzz/assimp_fuzzer.cc 274 20512 8 145 2441 1510 assimp_fuzzer.cc

Project functions overview

The following table shows data about each function in the project. The functions included in this table corresponds to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name Functions filename Args Function call depth Reached by Fuzzers Fuzzers runtime hit Func lines hit % I Count BB Count Cyclomatic complexity Functions reached Reached by functions Accumulated cyclomatic complexity Undiscovered complexity

Fuzzer details

Fuzzer: assimp_fuzzer

Call tree

The following is the call tree with color coding for whichfunctions are hit/not hit. This info is based on the coverageachieved of all fuzzers together and not just this specificfuzzer. This should change in the future to be per-fuzzer-basis.

For further technical details on what the call tree overview is, please see the Glossary .

Full calltree

The following link provides a visualisation of the full calltree overlayed with coverage information: full calltree

For futher technical details on how the call tree is made, please see the Glossary .

Fuzz blockers

The followings nodes represent call sites where fuzz blockers occur

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
511 0 EP call site aiAttachLogStream

Runtime coverage analysis

Covered functions
0
Functions that are reachable but not covered
274
Reachable functions
274
Percentage of reachable functions covered
0.0%
NB: The sum of covered functions and functions that are reachable but not covered need not be Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation our of our static analysis capabilities.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/src/assimp/fuzz/assimp_fuzzer.cc 1
/src/assimp/code/Common/Assimp.cpp 4
/src/assimp/code/Common/DefaultLogger.cpp 9
/src/assimp/code/Common/Importer.cpp 15
/src/assimp/code/Common/StdOStreamLogStream.h 1
/src/assimp/include/assimp/LogStream.hpp 2
/src/assimp/code/Common/FileLogStream.h 1
/src/assimp/include/assimp/DefaultIOSystem.h 1
/src/assimp/include/assimp/IOSystem.hpp 4
/src/assimp/code/Common/DefaultIOSystem.cpp 2
/src/assimp/code/Common/AssertHandler.cpp 1
/ 15
/src/assimp/include/assimp/DefaultIOStream.h 1
/src/assimp/include/assimp/IOStream.hpp 2
/src/assimp/include/assimp/Exceptional.h 5
/src/assimp/include/assimp/Logger.hpp 12
/src/assimp/code/Common/Importer.h 2
//usr/local/bin/../include/c++/v1/exception 1
/src/assimp/code/Common/DefaultProgressHandler.h 1
/src/assimp/include/assimp/ProgressHandler.hpp 1
/src/assimp/code/Common/ImporterRegistry.cpp 2
/src/assimp/code/AssetLib/X/XFileImporter.cpp 1
/src/assimp/code/Common/BaseImporter.cpp 5
/src/assimp/code/AssetLib/Obj/ObjFileImporter.cpp 1
/src/assimp/code/AssetLib/AMF/AMFImporter.cpp 1
/src/assimp/code/AssetLib/3DS/3DSLoader.cpp 1
/src/assimp/include/assimp/types.h 10
/src/assimp/code/AssetLib/MD3/MD3Loader.cpp 1
/src/assimp/code/AssetLib/MD2/MD2Loader.cpp 1
/src/assimp/code/AssetLib/Ply/PlyLoader.cpp 1
/src/assimp/code/AssetLib/MDL/MDLLoader.cpp 1
/src/assimp/code/AssetLib/MDL/HalfLife/HL1ImportSettings.h 1
/src/assimp/code/AssetLib/ASE/ASELoader.cpp 1
/src/assimp/code/AssetLib/HMP/HMPLoader.cpp 1
/src/assimp/code/AssetLib/SMD/SMDLoader.cpp 1
/src/assimp/code/AssetLib/MDC/MDCLoader.cpp 1
/src/assimp/code/AssetLib/MD5/MD5Loader.cpp 1
/src/assimp/code/AssetLib/STL/STLLoader.cpp 1
/src/assimp/include/assimp/color4.h 1
/src/assimp/code/AssetLib/LWO/LWOLoader.cpp 1
/src/assimp/code/AssetLib/DXF/DXFLoader.cpp 1
/src/assimp/code/AssetLib/NFF/NFFLoader.cpp 1
/src/assimp/code/AssetLib/Raw/RawLoader.cpp 1
/src/assimp/code/AssetLib/SIB/SIBImporter.cpp 1
/src/assimp/code/AssetLib/OFF/OFFLoader.cpp 1
/src/assimp/code/AssetLib/AC/ACLoader.cpp 1
/src/assimp/code/AssetLib/BVH/BVHLoader.cpp 1
/src/assimp/code/AssetLib/Irr/IRRMeshLoader.cpp 1
/src/assimp/code/AssetLib/Irr/IRRShared.h 1
/src/assimp/include/assimp/XmlParser.h 1
/src/assimp/code/../contrib/pugixml/src/pugixml.cpp 1
/src/assimp/code/AssetLib/Irr/IRRLoader.cpp 1
/src/assimp/code/AssetLib/Q3D/Q3DLoader.cpp 1
/src/assimp/code/AssetLib/B3D/B3DImporter.h 1
/src/assimp/code/AssetLib/Collada/ColladaLoader.cpp 1
/src/assimp/code/AssetLib/Terragen/TerragenLoader.cpp 1
/src/assimp/code/AssetLib/CSM/CSMLoader.cpp 1
/src/assimp/code/AssetLib/Unreal/UnrealLoader.cpp 1
/src/assimp/code/AssetLib/LWS/LWSLoader.cpp 1
/src/assimp/code/AssetLib/Ogre/OgreImporter.h 1
/src/assimp/code/AssetLib/OpenGEX/OpenGEXImporter.cpp 2
/src/assimp/code/AssetLib/OpenGEX/OpenGEXImporter.h 1
/src/assimp/code/AssetLib/MS3D/MS3DLoader.cpp 1
/src/assimp/code/AssetLib/COB/COBLoader.cpp 1
/src/assimp/code/AssetLib/Blender/BlenderLoader.cpp 1
/src/assimp/code/AssetLib/Blender/BlenderModifier.h 1
/src/assimp/code/AssetLib/Blender/BlenderIntermediate.h 1
/src/assimp/code/AssetLib/Q3BSP/Q3BSPFileImporter.cpp 1
/src/assimp/code/AssetLib/NDO/NDOLoader.cpp 1
/src/assimp/code/AssetLib/IFC/IFCLoader.cpp 1
/src/assimp/code/AssetLib/IFC/IFCLoader.h 1
/src/assimp/code/AssetLib/XGL/XGLLoader.cpp 1
/src/assimp/code/AssetLib/FBX/FBXImporter.cpp 1
/src/assimp/code/AssetLib/FBX/FBXImportSettings.h 1
/src/assimp/code/AssetLib/Assbin/AssbinLoader.h 1
/src/assimp/code/AssetLib/glTF/glTFImporter.cpp 1
/src/assimp/code/AssetLib/glTF2/glTF2Importer.cpp 1
/src/assimp/code/AssetLib/3MF/D3MFImporter.cpp 1
/src/assimp/code/AssetLib/X3D/X3DImporter.cpp 1
/src/assimp/code/AssetLib/MMD/MMDImporter.cpp 1
/src/assimp/code/AssetLib/IQM/IQMImporter.cpp 1
/src/assimp/code/Common/PostStepRegistry.cpp 1
/src/assimp/code/PostProcessing/ConvertToLHProcess.cpp 3
/src/assimp/code/Common/BaseProcess.cpp 3
/src/assimp/code/PostProcessing/RemoveVCProcess.cpp 1
/src/assimp/code/PostProcessing/RemoveRedundantMaterials.cpp 1
/src/assimp/code/PostProcessing/EmbedTexturesProcess.cpp 1
/src/assimp/code/PostProcessing/FindInstancesProcess.cpp 1
/src/assimp/code/PostProcessing/OptimizeGraph.cpp 1
/src/assimp/code/PostProcessing/ComputeUVMappingProcess.cpp 1
/src/assimp/code/PostProcessing/TextureTransform.cpp 1
/src/assimp/code/PostProcessing/ScaleProcess.cpp 1
/src/assimp/code/PostProcessing/ArmaturePopulate.cpp 1
/src/assimp/code/PostProcessing/PretransformVertices.cpp 1
/src/assimp/include/assimp/matrix4x4.inl 3
/src/assimp/code/PostProcessing/TriangulateProcess.cpp 1
/src/assimp/code/PostProcessing/FindDegenerates.cpp 1
/src/assimp/code/PostProcessing/SortByPTypeProcess.cpp 1
/src/assimp/code/PostProcessing/FindInvalidDataProcess.cpp 1
/src/assimp/code/PostProcessing/OptimizeMeshes.cpp 1
/src/assimp/code/PostProcessing/FixNormalsStep.cpp 1
/src/assimp/code/PostProcessing/SplitByBoneCountProcess.cpp 1
/src/assimp/code/PostProcessing/SplitLargeMeshes.cpp 2
/src/assimp/code/PostProcessing/DropFaceNormalsProcess.cpp 1
/src/assimp/code/PostProcessing/GenFaceNormalsProcess.cpp 1
/src/assimp/code/PostProcessing/ProcessHelper.h 2
/src/assimp/code/PostProcessing/GenVertexNormalsProcess.cpp 1
/src/assimp/code/PostProcessing/CalcTangentsProcess.cpp 1
/src/assimp/code/PostProcessing/JoinVerticesProcess.cpp 1
/src/assimp/code/PostProcessing/DeboneProcess.cpp 1
/src/assimp/code/PostProcessing/LimitBoneWeightsProcess.cpp 1
/src/assimp/code/PostProcessing/ImproveCacheLocality.cpp 1
/src/assimp/code/PostProcessing/GenBoundingBoxesProcess.cpp 1
/src/assimp/code/Common/BaseProcess.h 4
/src/assimp/include/assimp/MemoryIOWrapper.h 1
/src/assimp/include/assimp/TinyFormatter.h 4
/src/assimp/code/Common/Version.cpp 4
/src/assimp/code/Common/scene.cpp 2
/src/assimp/include/assimp/metadata.h 8
/src/assimp/include/assimp/mesh.h 4
/src/assimp/include/assimp/aabb.h 1
/src/assimp/code/Material/MaterialSystem.cpp 5
/src/assimp/include/assimp/material.h 2
/src/assimp/include/assimp/anim.h 7
/src/assimp/include/assimp/texture.h 1
/src/assimp/include/assimp/GenericProperty.h 4
/src/assimp/include/assimp/Hash.h 1
/src/assimp/include/assimp/Profiler.h 3
/src/assimp/include/assimp/StringComparison.h 1
//usr/include/ctype.h 1
/src/assimp/code/Common/FileSystemFilter.h 2
/src/assimp/code/Common/ScenePrivate.h 2
/src/assimp/code/PostProcessing/ValidateDataStructure.cpp 2
/src/assimp/include/assimp/Importer.hpp 1
/src/assimp/code/Common/ScenePreprocessor.h 1
/src/assimp/code/Common/ScenePreprocessor.cpp 3
/src/assimp/include/assimp/vector3.h 2
/src/assimp/include/assimp/vector3.inl 3
/src/assimp/include/assimp/scene.h 1
/src/assimp/include/assimp/quaternion.h 1
//usr/local/bin/../include/c++/v1/math.h 1
/src/assimp/include/assimp/matrix3x3.h 1
/src/assimp/include/assimp/quaternion.inl 1
/src/assimp/include/assimp/material.inl 2
/src/assimp/include/assimp/BaseImporter.h 2

Analyses and suggestions

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination reaches a high amount of code coverage.

Func name Functions filename Arg count Args Function depth hitcount instr count bb count cyclomatic complexity Reachable functions Incoming references total cyclomatic complexity Unreached complexity
Assimp::FBXImporter::InternReadFile(std::__1::basic_string , std::__1::allocator > const&, aiScene*, Assimp::IOSystem*) /src/assimp/code/AssetLib/FBX/FBXImporter.cpp 4 ['class.Assimp::FBXImporter *', 'class.std::__1::basic_string *', 'struct.aiScene *', 'class.Assimp::IOSystem *'] 21 0 296 52 36 625 0 6979 6784

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers
4.04%
840/20786
Cyclomatic complexity statically reachable by fuzzers
7.4%
8294 / 112121

All functions overview

The status of all functions in the project will be as follows if you implement fuzzers for these functions

Func name Functions filename Args Function call depth Reached by Fuzzers Fuzzers runtime hit Func lines hit % I Count BB Count Cyclomatic complexity Functions reached Reached by functions Accumulated cyclomatic complexity Undiscovered complexity

Runtime coverage analysis

This section gives analysis based on data about the runtime coverage information

For futher technical details on how this section is made, please see the Glossary .

Complex functions with low coverage

Func name Function total lines Lines covered at runtime percentage covered