Fuzz introspector
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues
Project coverage
Per-fuzzer coverage

Table of contents

Project overview: arduinojson
High level conclusions
Reachability and coverage overview
Fuzzers overview
Project functions overview
Fuzzer details
Fuzzer: msgpack_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: json_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Analyses and suggestions
Optimal target analysis
Remaining optimal interesting functions
All functions overview
Fuzz engine guidance
/src/arduinojson/extras/fuzzing/msgpack_fuzzer.cpp
Dictionary
Fuzzer function priority
/src/arduinojson/extras/fuzzing/json_fuzzer.cpp
Dictionary
Fuzzer function priority
Runtime coverage analysis
Complex functions with low coverage
Files and Directories in report
Files in report
Directories in report
Metadata section
Report generation date: 2025-04-11

Project overview: arduinojson

High level conclusions

Reachability and coverage overview

Functions statically reachable by fuzzers
99.0%
386 / 389
Cyclomatic complexity statically reachable by fuzzers
100.%
1217 / 1223
Runtime code coverage of functions
96.0%
374 / 389

Fuzzers overview

Fuzzer Fuzzer filename Functions Reached Functions unreached Fuzzer depth Files reached Basic blocks reached Cyclomatic complexity Details
msgpack_fuzzer /src/arduinojson/extras/fuzzing/msgpack_fuzzer.cpp 458 5 15 45 1318 686 msgpack_fuzzer.cpp
json_fuzzer /src/arduinojson/extras/fuzzing/json_fuzzer.cpp 584 5 15 54 1752 929 json_fuzzer.cpp

Project functions overview

The following table shows data about each function in the project. The functions included in this table correspond 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: msgpack_fuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Full calltree

Call tree overview bitmap:

The distribution of callsites in terms of coloring is
Color Runtime hitcount Callsite count Percentage
red 0 37 8.62%
gold [1:9] 4 0.93%
yellow [10:29] 4 0.93%
greenyellow [30:49] 9 2.09%
lawngreen 50+ 375 87.4%
All colors 429 100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
11 11 1 :

['ArduinoJson::V740HB42::detail::MemoryPoolList ::allocFromFreeList()']

11 11 ArduinoJson::V740HB42::detail::MemoryPoolList ::allocSlot(ArduinoJson::V740HB42::Allocator*) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/MemoryPoolList.hpp:84
6 6 1 :

['ArduinoJson::V740HB42::detail::MsgPackDeserializer >::skipBytes(unsigned long)']

6 6 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::MsgPackDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData*,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp:59
6 6 1 :

['ArduinoJson::V740HB42::detail::MsgPackDeserializer >::skipBytes(unsigned long)']

6 6 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::MsgPackDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData*,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp:80
6 6 1 :

['ArduinoJson::V740HB42::detail::MsgPackDeserializer >::skipBytes(unsigned long)']

6 6 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::MsgPackDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData*,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp:86
6 6 1 :

['ArduinoJson::V740HB42::detail::MsgPackDeserializer >::skipBytes(unsigned long)']

6 6 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::MsgPackDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData*,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp:168
6 6 1 :

['ArduinoJson::V740HB42::detail::MsgPackDeserializer >::skipBytes(unsigned long)']

6 6 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::MsgPackDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData*,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp:177
0 90 1 :

['_ZN11ArduinoJson8V740HB426detail17MsgPackSerializerINS1_6WriterINSt3__112basic_stringIcNS4_11char_traitsIcEENS4_9allocatorIcEEEEvEEE5visitIfEENS1_9enable_ifIXaasr17is_floating_pointIT_EE5valueeqstSF_Li4EEmE4typeESF_']

0 90 _ZN11ArduinoJson8V740HB426detail17MsgPackSerializerINS1_6WriterINSt3__112basic_stringIcNS4_11char_traitsIcEENS4_9allocatorIcEEEEvEEE5visitIdEENS1_9enable_ifIXaasr17is_floating_pointIT_EE5valueeqstSF_Li8EEmE4typeESF_ call site: 00347 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackSerializer.hpp:43
0 65 4 :

['ArduinoJson::V740HB42::detail::Slot ::id() const', 'ArduinoJson::V740HB42::detail::ResourceManager::allocExtension()', 'ArduinoJson::V740HB42::detail::Slot ::operator->() const', 'ArduinoJson::V740HB42::detail::Slot ::operator bool() const']

0 65 _ZN11ArduinoJson8V740HB426detail11VariantData10setIntegerIaEENS1_9enable_ifIXsr9is_signedIT_EE5valueEbE4typeES5_PNS1_15ResourceManagerE call site: 00130 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantImpl.hpp:106
0 14 1 :

['void ArduinoJson::V740HB42::detail::MsgPackSerializer , std::__1::allocator >, void> >::writeInteger (unsigned int)']

0 236 ArduinoJson::V740HB42::detail::MsgPackSerializer ,std::__1::allocator >,void>>::visit(ArduinoJson::V740HB42::detail::ArrayDataconst&) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackSerializer.hpp:54
0 14 1 :

['void ArduinoJson::V740HB42::detail::MsgPackSerializer , std::__1::allocator >, void> >::writeInteger (unsigned int)']

0 236 ArduinoJson::V740HB42::detail::MsgPackSerializer ,std::__1::allocator >,void>>::visit(ArduinoJson::V740HB42::detail::ObjectDataconst&) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackSerializer.hpp:76
0 12 1 :

['ArduinoJson::V740HB42::detail::MsgPackSerializer , std::__1::allocator >, void> >::visit(decltype(nullptr))']

0 12 ArduinoJson::V740HB42::detail::MsgPackSerializer ,std::__1::allocator >,void>>::result_typeArduinoJson::V740HB42::detail::VariantData::accept ,std::__1::allocator >,void>>>(ArduinoJson::V740HB42::detail::VariantDataconst*,ArduinoJson::V740HB42::detail::ResourceManagerconst*,ArduinoJson::V740HB42::detail::MsgPackSerializer ,std::__1::allocator >,void>>&) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantData.hpp:116
0 2 1 :

['ArduinoJson::V740HB42::detail::Slot ::Slot()']

0 2 ArduinoJson::V740HB42::detail::MemoryPool ::allocSlot() call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/MemoryPool.hpp:68

Runtime coverage analysis

Covered functions
226
Functions that are reachable but not covered
24
Reachable functions
458
Percentage of reachable functions covered
94.76%
NB: The sum of covered functions and functions that are reachable but not covered need not be equal to 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 of our static analysis capabilities.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/src/arduinojson/extras/fuzzing/msgpack_fuzzer.cpp 1
Memory/Allocator.hpp 1
Document/JsonDocument.hpp 8
Memory/ResourceManager.hpp 9
Memory/StringPool.hpp 5
Memory/MemoryPoolList.hpp 10
Variant/VariantData.hpp 16
Variant/VariantContent.hpp 2
Memory/StringNode.hpp 4
Memory/MemoryPool.hpp 23
MsgPack/MsgPackDeserializer.hpp 19
Polyfills/utility.hpp 2
Deserialization/deserialize.hpp 3
Deserialization/Reader.hpp 1
Deserialization/Readers/RamReader.hpp 1
Deserialization/Readers/IteratorReader.hpp 3
Deserialization/NestingLimit.hpp 4
Deserialization/DeserializationOptions.hpp 1
Variant/VariantAttorney.hpp 4
Deserialization/DeserializationError.hpp 2
Memory/StringBuffer.hpp 7
Deserialization/Filter.hpp 6
Variant/VariantImpl.hpp 5
Numbers/convertNumber.hpp 4
Polyfills/limits.hpp 4
Memory/ResourceManagerImpl.hpp 4
MsgPack/endianness.hpp 15
Collection/CollectionData.hpp 4
Array/ArrayData.hpp 1
Array/ArrayImpl.hpp 1
Collection/CollectionImpl.hpp 6
Object/ObjectData.hpp 2
Strings/JsonString.hpp 5
Strings/Adapters/RamString.hpp 6
Object/ObjectImpl.hpp 1
Strings/StringAdapter.hpp 1
Strings/StringAdapters.hpp 1
Variant/JsonVariantConst.hpp 3
MsgPack/MsgPackSerializer.hpp 25
Serialization/serialize.hpp 2
Serialization/Writers/StdStringWriter.hpp 3
Serialization/CountingDecorator.hpp 4
Numbers/FloatTraits.hpp 2
Polyfills/alias_cast.hpp 1
Misc/SerializedValue.hpp 3

Fuzzer: json_fuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Full calltree

Call tree overview bitmap:

The distribution of callsites in terms of coloring is
Color Runtime hitcount Callsite count Percentage
red 0 92 15.0%
gold [1:9] 1 0.16%
yellow [10:29] 2 0.32%
greenyellow [30:49] 1 0.16%
lawngreen 50+ 514 84.2%
All colors 610 100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
27 27 1 :

['ArduinoJson::V740HB42::detail::JsonDeserializer >::skipNumericValue()']

27 27 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::JsonDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData&,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp:107
21 21 1 :

['ArduinoJson::V740HB42::detail::JsonDeserializer >::skipQuotedString()']

21 21 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::JsonDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData&,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp:86
10 10 1 :

['ArduinoJson::V740HB42::detail::ResourceManager::dereferenceString(char const*)']

10 98 ArduinoJson::V740HB42::detail::VariantData::clear(ArduinoJson::V740HB42::detail::ResourceManager*) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantImpl.hpp:49
0 94 1 :

['ArduinoJson::V740HB42::detail::JsonDeserializer >::skipArray(ArduinoJson::V740HB42::DeserializationOption::NestingLimit)']

0 94 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::JsonDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData&,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp:73
0 94 1 :

['ArduinoJson::V740HB42::detail::JsonDeserializer >::skipObject(ArduinoJson::V740HB42::DeserializationOption::NestingLimit)']

0 94 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::JsonDeserializer >::parseVariant (ArduinoJson::V740HB42::detail::VariantData&,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp:79
0 16 1 :

['ArduinoJson::V740HB42::detail::JsonSerializer , std::__1::allocator >, void> >::visit(decltype(nullptr))']

0 16 ArduinoJson::V740HB42::detail::JsonSerializer ,std::__1::allocator >,void>>::result_typeArduinoJson::V740HB42::detail::VariantData::accept ,std::__1::allocator >,void>>>(ArduinoJson::V740HB42::detail::VariantDataconst*,ArduinoJson::V740HB42::detail::ResourceManagerconst*,ArduinoJson::V740HB42::detail::JsonSerializer ,std::__1::allocator >,void>>&) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantData.hpp:116
0 2 1 :

['ArduinoJson::V740HB42::detail::Slot ::Slot()']

0 2 ArduinoJson::V740HB42::detail::MemoryPool ::allocSlot() call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/MemoryPool.hpp:68
0 0 None 38 720 ArduinoJson::V740HB42::DeserializationErrorArduinoJson::V740HB42::detail::doDeserialize ,ArduinoJson::V740HB42::detail::DeserializationOptions >(ArduinoJson::V740HB42::JsonDocument&,ArduinoJson::V740HB42::detail::BoundedReader ,ArduinoJson::V740HB42::detail::DeserializationOptions ) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/deserialize.hpp:48
0 0 None 2 18 ArduinoJson::V740HB42::detail::ResourceManager::allocVariant() call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/ResourceManagerImpl.hpp:16
0 0 None 0 1233 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::JsonDeserializer >::parseObject (ArduinoJson::V740HB42::detail::ObjectData&,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp:275
0 0 None 0 1233 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::JsonDeserializer >::parseObject (ArduinoJson::V740HB42::detail::ObjectData&,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp:279
0 0 None 0 857 ArduinoJson::V740HB42::DeserializationError::CodeArduinoJson::V740HB42::detail::JsonDeserializer >::parseArray (ArduinoJson::V740HB42::detail::ArrayData&,ArduinoJson::V740HB42::detail::AllowAllFilter,ArduinoJson::V740HB42::DeserializationOption::NestingLimit) call site: 00000 /src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp:173

Runtime coverage analysis

Covered functions
279
Functions that are reachable but not covered
44
Reachable functions
584
Percentage of reachable functions covered
92.47%
NB: The sum of covered functions and functions that are reachable but not covered need not be equal to 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 of our static analysis capabilities.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/src/arduinojson/extras/fuzzing/json_fuzzer.cpp 1
Memory/Allocator.hpp 1
Document/JsonDocument.hpp 8
Memory/ResourceManager.hpp 10
Memory/StringPool.hpp 6
Memory/MemoryPoolList.hpp 11
Variant/VariantData.hpp 19
Variant/VariantContent.hpp 2
Memory/StringNode.hpp 4
Memory/MemoryPool.hpp 23
Json/JsonDeserializer.hpp 30
Polyfills/utility.hpp 4
Deserialization/deserialize.hpp 3
Deserialization/Reader.hpp 1
Deserialization/Readers/RamReader.hpp 1
Deserialization/Readers/IteratorReader.hpp 2
Deserialization/NestingLimit.hpp 4
Deserialization/DeserializationOptions.hpp 1
Variant/VariantAttorney.hpp 4
Deserialization/DeserializationError.hpp 2
Memory/StringBuilder.hpp 7
Json/Latch.hpp 4
Deserialization/Filter.hpp 6
Collection/CollectionData.hpp 7
Array/ArrayData.hpp 1
Array/ArrayImpl.hpp 1
Memory/ResourceManagerImpl.hpp 6
Collection/CollectionImpl.hpp 6
Object/ObjectData.hpp 1
Json/Utf16.hpp 5
Json/Utf8.hpp 1
Json/EscapeSequence.hpp 3
Strings/JsonString.hpp 7
Strings/Adapters/RamString.hpp 6
Strings/StringAdapter.hpp 3
Object/ObjectImpl.hpp 3
Strings/StringAdapters.hpp 1
Variant/VariantImpl.hpp 5
Polyfills/alias_cast.hpp 2
Numbers/parseNumber.hpp 16
Polyfills/ctype.hpp 1
Numbers/FloatTraits.hpp 8
Polyfills/pgmspace_generic.hpp 6
Numbers/convertNumber.hpp 2
Polyfills/limits.hpp 3
Variant/JsonVariantConst.hpp 3
Json/JsonSerializer.hpp 14
Serialization/serialize.hpp 2
Serialization/Writers/StdStringWriter.hpp 3
Json/TextFormatter.hpp 18
Serialization/CountingDecorator.hpp 4
Polyfills/math.hpp 2
Numbers/FloatParts.hpp 3
Misc/SerializedValue.hpp 3

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, yield a high 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

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

Functions statically reachable by fuzzers
99.0%
386 / 389
Cyclomatic complexity statically reachable by fuzzers
100.%
1217 / 1223

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

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

Fuzz engine guidance

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

/src/arduinojson/extras/fuzzing/msgpack_fuzzer.cpp

Dictionary

Use this with the libFuzzer -dict=DICT.file flag


Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name 

-focus_function=['ArduinoJson::V740HB42::detail::MsgPackSerializer, std::__1::allocator >, void> >::visit(ArduinoJson::V740HB42::JsonString)', 'ArduinoJson::V740HB42::JsonDocument::JsonDocument(ArduinoJson::V740HB42::Allocator*)', 'ArduinoJson::V740HB42::detail::ResourceManager::allocExtension()', 'ArduinoJson::V740HB42::detail::MemoryPoolList::allocFromLastPool()', '_ZN11ArduinoJson8V740HB426detail11VariantData10setIntegerImEENS1_9enable_ifIXsr11is_unsignedIT_EE5valueEbE4typeES5_PNS1_15ResourceManagerE', 'ArduinoJson::V740HB42::detail::MsgPackSerializer, std::__1::allocator >, void> >::visit(ArduinoJson::V740HB42::detail::ArrayData const&)', 'ArduinoJson::V740HB42::detail::MsgPackSerializer, std::__1::allocator >, void> >::visit(ArduinoJson::V740HB42::detail::ObjectData const&)', 'ArduinoJson::V740HB42::detail::MsgPackSerializer, std::__1::allocator >, void> >::visit(ArduinoJson::V740HB42::JsonString)', 'ArduinoJson::V740HB42::detail::ResourceManager::~ResourceManager()', 'ArduinoJson::V740HB42::detail::VariantData* ArduinoJson::V740HB42::detail::VariantAttorney::getOrCreateData(ArduinoJson::V740HB42::JsonDocument&)']

/src/arduinojson/extras/fuzzing/json_fuzzer.cpp

Dictionary

Use this with the libFuzzer -dict=DICT.file flag


Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name 

-focus_function=['ArduinoJson::V740HB42::DeserializationError::Code ArduinoJson::V740HB42::detail::JsonDeserializer >::parseArray(ArduinoJson::V740HB42::detail::ArrayData&, ArduinoJson::V740HB42::detail::AllowAllFilter, ArduinoJson::V740HB42::DeserializationOption::NestingLimit)', 'ArduinoJson::V740HB42::detail::JsonDeserializer >::canBeInNonQuotedString(char)', 'ArduinoJson::V740HB42::detail::JsonSerializer, std::__1::allocator >, void> >::result_type ArduinoJson::V740HB42::detail::VariantData::accept, std::__1::allocator >, void> > >(ArduinoJson::V740HB42::detail::JsonSerializer, std::__1::allocator >, void> >&, ArduinoJson::V740HB42::detail::ResourceManager const*) const', 'ArduinoJson::V740HB42::detail::JsonDeserializer >::canBeInNumber(char)', 'ArduinoJson::V740HB42::detail::JsonDeserializer >::skipKeyword(char const*)', 'ArduinoJson::V740HB42::JsonDocument::JsonDocument(ArduinoJson::V740HB42::Allocator*)', 'ArduinoJson::V740HB42::detail::VariantData::clear(ArduinoJson::V740HB42::detail::ResourceManager*)', 'ArduinoJson::V740HB42::detail::enable_if<(sizeof (double))==(8), bool>::type ArduinoJson::V740HB42::detail::VariantData::setFloat(double, ArduinoJson::V740HB42::detail::ResourceManager*)', 'ArduinoJson::V740HB42::detail::MemoryPoolList::allocFromLastPool()', 'ArduinoJson::V740HB42::detail::VariantData::asString() const']

Runtime coverage analysis

This section shows analysis of runtime coverage data.

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

Complex functions with low coverage

Func name Function total lines Lines covered at runtime percentage covered Reached by fuzzers

Files and Directories in report

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file Reached by Covered by
[] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/EscapeSequence.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantContent.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Document/JsonDocument.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Polyfills/math.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/TextFormatter.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/ResourceManager.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/StringBuffer.hpp ['msgpack_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Array/ArrayImpl.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Strings/StringAdapter.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/msgpack_fuzzer.cpp ['msgpack_fuzzer'] ['msgpack_fuzzer']
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/MemoryPool.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/Filter.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantData.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/Allocator.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Polyfills/utility.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/JsonVariantConst.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/endianness.hpp ['msgpack_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/Readers/RamReader.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Numbers/parseNumber.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Numbers/FloatParts.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Strings/StringAdapters.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantImpl.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Collection/CollectionData.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackSerializer.hpp ['msgpack_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Strings/Adapters/RamString.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/MemoryPoolList.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/StringNode.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/StringPool.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Serialization/CountingDecorator.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Object/ObjectImpl.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Polyfills/pgmspace_generic.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Strings/JsonString.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp ['msgpack_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/ResourceManagerImpl.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/Utf8.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Serialization/Writers/StdStringWriter.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Serialization/serialize.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Array/ArrayData.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/StringBuilder.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Collection/CollectionImpl.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Object/ObjectData.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/Reader.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/Readers/IteratorReader.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Numbers/convertNumber.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/DeserializationOptions.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/VariantAttorney.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Numbers/FloatTraits.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonSerializer.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/Utf16.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Polyfills/ctype.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Polyfills/limits.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Misc/SerializedValue.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/Latch.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/json_fuzzer.cpp ['json_fuzzer'] ['json_fuzzer']
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/NestingLimit.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/JsonDeserializer.hpp ['json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/DeserializationError.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Polyfills/alias_cast.hpp ['msgpack_fuzzer', 'json_fuzzer'] []
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/deserialize.hpp ['msgpack_fuzzer', 'json_fuzzer'] []

Directories in report

Directory
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/MsgPack/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Memory/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Strings/Adapters/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Array/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Strings/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Serialization/Writers/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Variant/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/Readers/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Serialization/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Numbers/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Deserialization/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Document/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Collection/
/src/arduinojson/extras/fuzzing/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Polyfills/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Json/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Misc/
/src/arduinojson/extras/fuzzing/../../src/ArduinoJson/Object/

Metadata section

This sections shows the raw data that is used to produce this report. This is mainly used for further processing and developer debugging.

Fuzzer Calltree file Program data file Coverage file
msgpack_fuzzer fuzzerLogFile-0-YhgFjU5sH3.data fuzzerLogFile-0-YhgFjU5sH3.data.yaml msgpack_fuzzer.covreport
json_fuzzer fuzzerLogFile-0-V6uzVoN991.data fuzzerLogFile-0-V6uzVoN991.data.yaml json_fuzzer.covreport