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

Table of contents

Project overview: flatbuffers
High level conclusions
Reachability and coverage overview
Fuzzers overview
Project functions overview
Fuzzer details
Fuzzer: flexverifier_fuzzer
Call tree
Runtime coverage analysis
Files reached
Fuzzer: verifier_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: annotator_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: parser_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: scalar_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: monster_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
Files and Directories in report
Files in report
Directories in report
Metadata section
Function call coverage
Function in each files in report
Report generation date: 2023-03-26

Project overview: flatbuffers

High level conclusions

Reachability and coverage overview

Functions statically reachable by fuzzers
50.1%
925/1844
Cyclomatic complexity statically reachable by fuzzers
61.1%
6326/10346
Runtime code coverage of functions
61.0%
1122 / 1844

Fuzzers overview

Fuzzer Fuzzer filename Functions Reached Functions unreached Fuzzer depth Files reached Basic blocks reached Cyclomatic complexity Details
flexverifier_fuzzer /src/flatbuffers/tests/fuzzer/flexbuffers_verifier_fuzzer.cc 16 51 4 2 39 26 flexbuffers_verifier_fuzzer.cc
verifier_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_verifier_fuzzer.cc 349 60 13 9 1027 565 flatbuffers_verifier_fuzzer.cc
annotator_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_annotator_fuzzer.cc 530 383 10 15 2834 1843 flatbuffers_annotator_fuzzer.cc
parser_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_parser_fuzzer.cc 991 739 15 17 10372 3673 flatbuffers_parser_fuzzer.cc
scalar_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_scalar_fuzzer.cc 1288 956 15 27 11587 4345 flatbuffers_scalar_fuzzer.cc
monster_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_monster_fuzzer.cc 791 1290 14 23 2873 1490 flatbuffers_monster_fuzzer.cc

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: flexverifier_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 0 0.0%
gold [1:9] 0 0.0%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 9 100.%
All colors 9 100

Runtime coverage analysis

Covered functions
47
Functions that are reachable but not covered
0
Reachable functions
16
Percentage of reachable functions covered
100.0%
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.
Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/src/flatbuffers/tests/fuzzer/flexbuffers_verifier_fuzzer.cc 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h 7

Fuzzer: verifier_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 4 1.62%
gold [1:9] 0 0.0%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 242 98.3%
All colors 246 100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
2 88 flatbuffers::Vector >::Get(unsigned int) const call site: 00088
1 1 LLVMFuzzerTestOneInput call site: 00001
1 158 flexbuffers::VerifyBuffer(unsigned char const*, unsigned long, std::__1::vector >*) call site: 00158

Runtime coverage analysis

Covered functions
215
Functions that are reachable but not covered
5
Reachable functions
349
Percentage of reachable functions covered
98.57%
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/flatbuffers/tests/fuzzer/flatbuffers_verifier_fuzzer.cc 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h 39
/src/flatbuffers/tests/fuzzer/../../tests/cpp17/generated_cpp17/monster_test_generated.h 30
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 3
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h 4
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h 33
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h 8
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flex_flat_util.h 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h 7

Fuzzer: annotator_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 47 7.24%
gold [1:9] 0 0.0%
yellow [10:29] 5 0.77%
greenyellow [30:49] 15 2.31%
lawngreen 50+ 582 89.6%
All colors 649 100

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
0 2 2 :

['std::__1::basic_string , std::__1::allocator >::basic_string (char const*)', 'flatbuffers::(anonymous namespace)::SetError(flatbuffers::BinaryRegionComment&, flatbuffers::BinaryRegionStatus, std::__1::basic_string , std::__1::allocator >)']

23 40 flatbuffers::BinaryAnnotator::GetOrBuildVTable(unsignedlong,reflection::Objectconst*,unsignedlong)::$_0::operator()(reflection::Fieldconst*)const call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:366
0 0 None 106 1517 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1195
0 0 None 98 1663 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1057
0 0 None 98 1663 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1082
0 0 None 93 236 flatbuffers::BinaryAnnotator::GetOrBuildVTable(unsignedlong,reflection::Objectconst*,unsignedlong) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:277
0 0 None 79 368 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1114
0 0 None 79 357 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1263
0 0 None 70 130 flatbuffers::BinaryAnnotator::GetOrBuildVTable(unsignedlong,reflection::Objectconst*,unsignedlong) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:419
0 0 None 0 0 boolflatbuffers::Verifier::VerifyVectorOfTables (flatbuffers::Vector >const*) call site: 00000 /src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h:166
0 0 None 0 0 flatbuffers::Verifier::VerifyVectorOfStrings(flatbuffers::Vector >const*)const call site: 00000 /src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h:155
0 0 None 0 0 boolflatbuffers::Verifier::VerifyVectorOfTables (flatbuffers::Vector >const*) call site: 00000 /src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h:166
0 0 7 :

['std::__1::basic_ostringstream , std::__1::allocator >::~basic_ostringstream()', 'std::__1::basic_ifstream >::rdbuf() const', 'std::__1::basic_ostringstream , std::__1::allocator >::basic_ostringstream()', 'std::__1::basic_string , std::__1::allocator >::operator=(std::__1::basic_string , std::__1::allocator >&&)', 'std::__1::basic_ostringstream , std::__1::allocator >::str() const', 'std::__1::basic_ostream >::operator<<(std::__1::basic_streambuf >*)', 'std::__1::basic_string , std::__1::allocator >::~basic_string()']

0 0 flatbuffers::(anonymousnamespace)::LoadFileRaw(charconst*,bool,std::__1::basic_string ,std::__1::allocator >*) call site: 00000 /src/flatbuffers/src/util.cpp:70

Runtime coverage analysis

Covered functions
231
Functions that are reachable but not covered
129
Reachable functions
530
Percentage of reachable functions covered
75.66%
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/flatbuffers/tests/fuzzer/flatbuffers_annotator_fuzzer.cc 1
/src/flatbuffers/tests/fuzzer/../../src/binary_annotator.h 31
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection_generated.h 22
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 6
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h 4
/src/flatbuffers/src/binary_annotator.cpp 18
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h 33
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h 21
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h 13
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/string.h 2
/usr/local/bin/../include/c++/v1/optional 5
/usr/include/ctype.h 1
/src/flatbuffers/src/reflection.cpp 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection.h 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h 1

Fuzzer: parser_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 0 395 26.7%
gold [1:9] 50 3.38%
yellow [10:29] 15 1.01%
greenyellow [30:49] 15 1.01%
lawngreen 50+ 1002 67.8%
All colors 1477 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
240 264 24 :

['std::__1::vector >::end() const', 'std::__1::vector >::begin()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::vector >::begin()', 'std::__1::vector >::end()', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::__wrap_iter ::operator++()', 'std::__1::__wrap_iter ::operator*() const', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::__wrap_iter ::operator++(int)', 'flatbuffers::CheckedError::~CheckedError()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator++()', 'std::__1::vector >::end()', 'std::__1::vector >::end()', 'std::__1::vector >::begin()', 'std::__1::vector >::begin() const', 'flatbuffers::CheckedError::Check()', 'flatbuffers::EnumDef::Vals() const', 'flatbuffers::Parser::CheckPrivatelyLeakedFields(flatbuffers::Definition const&, flatbuffers::Definition const&)', 'std::__1::__wrap_iter ::operator++()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)']

240 268 flatbuffers::Parser::CheckPrivateLeak() call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3466
27 27 2 :

['std::__1::basic_string , std::__1::allocator > flatbuffers::(anonymous namespace)::TypeToIntervalString ()', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, std::__1::basic_string , std::__1::allocator >&&)']

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:113
27 27 2 :

['std::__1::basic_string , std::__1::allocator > flatbuffers::(anonymous namespace)::TypeToIntervalString ()', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, std::__1::basic_string , std::__1::allocator >&&)']

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,double*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:113
0 0 None 2812 18864 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3522
0 0 None 2812 18610 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3551
0 0 None 2812 18610 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3566
0 0 None 2812 18610 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3580
0 0 None 2812 18610 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3589
0 0 None 2812 18610 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3593
0 0 None 1397 10413 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3621
0 0 None 303 6840 flatbuffers::Parser::ParseEnum(bool,flatbuffers::EnumDef**,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:2383
0 0 None 303 4779 flatbuffers::Parser::ParseEnum(bool,flatbuffers::EnumDef**,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:2425

Runtime coverage analysis

Covered functions
522
Functions that are reachable but not covered
156
Reachable functions
991
Percentage of reachable functions covered
84.26%
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/flatbuffers/tests/fuzzer/flatbuffers_parser_fuzzer.cc 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/idl.h 76
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 5
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flatbuffer_builder.h 25
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector_downward.h 22
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h 44
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/default_allocator.h 4
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/allocator.h 4
/src/flatbuffers/src/idl_parser.cpp 98
/src/flatbuffers/src/util.cpp 16
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h 31
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h 9
/usr/local/bin/../include/c++/v1/math.h 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/hash.h 4
/usr/include/ctype.h 4
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection.h 1
/usr/include/stdlib.h 1

Fuzzer: scalar_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 1216 68.0%
gold [1:9] 0 0.0%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 572 31.9%
All colors 1788 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
339 349 4 :

['flatbuffers::CheckedError::~CheckedError()', 'flatbuffers::CheckedError::Check()', 'flatbuffers::(anonymous namespace)::NoError()', 'flatbuffers::Parser::SkipAnyJsonValue()']

339 349 flatbuffers::Parser::ParseTable(flatbuffers::StructDefconst&,std::__1::basic_string ,std::__1::allocator >*,unsignedint*)::$_0::operator()(std::__1::basic_string ,std::__1::allocator >const&,unsignedlong&,flatbuffers::StructDefconst*)const call site: 00000 /src/flatbuffers/src/idl_parser.cpp:1431
290 290 1 :

['flatbuffers::Parser::ParseHash(flatbuffers::Value&, flatbuffers::FieldDef*)']

290 300 flatbuffers::Parser::ParseAnyValue(flatbuffers::Value&,flatbuffers::FieldDef*,unsignedlong,flatbuffers::StructDefconst*,unsignedint,bool) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:1346
246 264 24 :

['std::__1::vector >::end() const', 'std::__1::vector >::begin()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::vector >::begin()', 'std::__1::vector >::end()', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::__wrap_iter ::operator++()', 'std::__1::__wrap_iter ::operator*() const', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::__wrap_iter ::operator++(int)', 'flatbuffers::CheckedError::~CheckedError()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator++()', 'std::__1::vector >::end()', 'std::__1::vector >::end()', 'std::__1::vector >::begin()', 'std::__1::vector >::begin() const', 'flatbuffers::CheckedError::Check()', 'flatbuffers::EnumDef::Vals() const', 'flatbuffers::Parser::CheckPrivatelyLeakedFields(flatbuffers::Definition const&, flatbuffers::Definition const&)', 'std::__1::__wrap_iter ::operator++()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)']

246 268 flatbuffers::Parser::CheckPrivateLeak() call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3466
127 127 1 :

['flatbuffers::Parser::ParseAlignAttribute(std::__1::basic_string , std::__1::allocator > const&, unsigned long, unsigned long*)']

127 1399 flatbuffers::Parser::ParseDecl(charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:2643
27 27 2 :

['std::__1::basic_string , std::__1::allocator > flatbuffers::(anonymous namespace)::TypeToIntervalString ()', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, std::__1::basic_string , std::__1::allocator >&&)']

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:113
27 27 2 :

['std::__1::basic_string , std::__1::allocator > flatbuffers::(anonymous namespace)::TypeToIntervalString ()', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, std::__1::basic_string , std::__1::allocator >&&)']

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,double*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:113
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const', 'std::__1::optional ::operator*() &']

24 71 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator*() &', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 71 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator*() &', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 64 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const', 'std::__1::optional ::operator bool() const', 'std::__1::optional ::operator*() &']

24 64 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator*() &', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 62 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator*() &', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator bool() const', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 62 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259

Runtime coverage analysis

Covered functions
379
Functions that are reachable but not covered
744
Reachable functions
1288
Percentage of reachable functions covered
42.24%
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/flatbuffers/tests/fuzzer/flatbuffers_scalar_fuzzer.cc 9
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/idl.h 76
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 9
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flatbuffer_builder.h 27
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector_downward.h 22
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h 105
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/default_allocator.h 4
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/allocator.h 4
/src/flatbuffers/src/idl_parser.cpp 99
/src/flatbuffers/src/util.cpp 16
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h 35
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h 15
/usr/local/bin/../include/c++/v1/math.h 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/hash.h 4
/usr/include/ctype.h 4
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection.h 1
/usr/include/stdlib.h 1
/src/flatbuffers/tests/fuzzer/../../tests/test_assert.h 2
/src/flatbuffers/tests/test_assert.cpp 2
/src/flatbuffers/tests/fuzzer/test_init.h 1
/src/flatbuffers/src/idl_gen_text.cpp 19
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h 11
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/struct.h 2
/usr/local/bin/../include/c++/v1/optional 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h 7
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/string.h 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/array.h 4

Fuzzer: monster_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 0 112 18.1%
gold [1:9] 4 0.64%
yellow [10:29] 6 0.97%
greenyellow [30:49] 2 0.32%
lawngreen 50+ 494 79.9%
All colors 618 100

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
240 264 24 :

['std::__1::vector >::end() const', 'std::__1::vector >::begin()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::vector >::begin()', 'std::__1::vector >::end()', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::__wrap_iter ::operator++()', 'std::__1::__wrap_iter ::operator*() const', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator*() const', 'std::__1::__wrap_iter ::operator++(int)', 'flatbuffers::CheckedError::~CheckedError()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)', 'std::__1::__wrap_iter ::operator++()', 'std::__1::vector >::end()', 'std::__1::vector >::end()', 'std::__1::vector >::begin()', 'std::__1::vector >::begin() const', 'flatbuffers::CheckedError::Check()', 'flatbuffers::EnumDef::Vals() const', 'flatbuffers::Parser::CheckPrivatelyLeakedFields(flatbuffers::Definition const&, flatbuffers::Definition const&)', 'std::__1::__wrap_iter ::operator++()', 'bool std::__1::operator!= (std::__1::__wrap_iter const&, std::__1::__wrap_iter const&)']

240 268 flatbuffers::Parser::CheckPrivateLeak() call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3466
137 142 2 :

['std::__1::basic_string , std::__1::allocator > flatbuffers::NumToString (unsigned long)', 'flexbuffers::Reference::AsUInt64() const']

137 142 flexbuffers::Reference::ToString(bool,bool,std::__1::basic_string ,std::__1::allocator >&)const call site: 00000 /src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h:563
126 2019 23 :

['flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, double*)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, int)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, unsigned long)', 'flatbuffers::(anonymous namespace)::SingleValueRepack(flatbuffers::Value&, double)', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, short*)', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, unsigned int*)', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, unsigned short*)', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, unsigned long*)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, unsigned char)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, short)', 'flatbuffers::CheckedError::~CheckedError()', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, signed char*)', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, float*)', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, long*)', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, unsigned char*)', 'flatbuffers::CheckedError::Check()', 'std::__1::basic_string , std::__1::allocator >::c_str() const', 'flatbuffers::CheckedError flatbuffers::(anonymous namespace)::atot (char const*, flatbuffers::Parser&, int*)', 'flatbuffers::(anonymous namespace)::SingleValueRepack(flatbuffers::Value&, float)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, unsigned short)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, long)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, signed char)', 'void flatbuffers::(anonymous namespace)::SingleValueRepack (flatbuffers::Value&, unsigned int)']

126 2023 flatbuffers::Parser::ParseSingleValue(std::__1::basic_string ,std::__1::allocator >const*,flatbuffers::Value&,bool) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:2123
81 81 2 :

['flatbuffers::FlatBufferBuilder::CreateSharedString(std::__1::basic_string_view >)', 'std::__1::basic_string , std::__1::allocator >::operator std::__1::basic_string_view >() const']

81 90 flatbuffers::Parser::ParseString(flatbuffers::Value&,bool) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:1217
27 27 2 :

['std::__1::basic_string , std::__1::allocator > flatbuffers::(anonymous namespace)::TypeToIntervalString ()', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, std::__1::basic_string , std::__1::allocator >&&)']

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:113
27 27 2 :

['std::__1::basic_string , std::__1::allocator > flatbuffers::(anonymous namespace)::TypeToIntervalString ()', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(std::__1::basic_string , std::__1::allocator >&&, std::__1::basic_string , std::__1::allocator >&&)']

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,double*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:113
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const', 'std::__1::optional ::operator*() &']

24 71 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator*() &', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 71 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator*() &', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 64 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const', 'std::__1::optional ::operator bool() const', 'std::__1::optional ::operator*() &']

24 64 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator bool() const', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator*() &', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 62 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259
24 24 4 :

['std::__1::optional ::operator*() &', 'std::__1::basic_string , std::__1::allocator >::operator+=(char const*)', 'std::__1::optional ::operator bool() const', 'std::__1::optional flatbuffers::Table::GetOptional (unsigned short) const']

24 62 boolflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:259

Runtime coverage analysis

Covered functions
957
Functions that are reachable but not covered
123
Reachable functions
791
Percentage of reachable functions covered
84.45%
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.
Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.
Function name source code lines source lines hit percentage hit

Files reached

filename functions hit
/src/flatbuffers/tests/fuzzer/flatbuffers_monster_fuzzer.cc 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/idl.h 18
/src/flatbuffers/src/idl_parser.cpp 12
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flatbuffer_builder.h 5
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector_downward.h 5
/src/flatbuffers/src/util.cpp 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h 27
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h 39
/src/flatbuffers/tests/fuzzer/../../tests/cpp17/generated_cpp17/monster_test_generated.h 30
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 8
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h 8
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h 39
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h 12
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flex_flat_util.h 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h 66
/src/flatbuffers/tests/fuzzer/../../tests/test_assert.h 3
/src/flatbuffers/tests/test_assert.cpp 2
/src/flatbuffers/src/idl_gen_text.cpp 19
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/struct.h 2
/usr/local/bin/../include/c++/v1/optional 2
/usr/local/bin/../include/c++/v1/math.h 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/string.h 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/array.h 4

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
flatbuffers::Parser::Serialize() /src/flatbuffers/src/idl_parser.cpp 1 ['class.flatbuffers::Parser *'] 6 0 636 112 95 614 0 990 698
flatbuffers::CopyTable(flatbuffers::FlatBufferBuilder&,reflection::Schemaconst&,reflection::Objectconst&,flatbuffers::Tableconst&,bool) /src/flatbuffers/src/reflection.cpp 5 ['class.flatbuffers::FlatBufferBuilder *', 'struct.reflection::Object *', 'struct.reflection::Object *', 'class.flatbuffers::Table *', 'N/A'] 5 0 772 187 134 316 1 635 371
flatbuffers::Parser::Deserialize(unsignedcharconst*,unsignedlong) /src/flatbuffers/src/idl_parser.cpp 3 ['class.flatbuffers::Parser *', 'char *', 'size_t '] 5 0 65 14 6 477 0 776 327
flatbuffers::(anonymousnamespace)::VerifyObject(flatbuffers::Verifier&,reflection::Schemaconst&,reflection::Objectconst&,flatbuffers::Tableconst*,bool) /src/flatbuffers/src/reflection.cpp 5 ['class.flatbuffers::Verifier.115 *', 'struct.reflection::Object *', 'struct.reflection::Object *', 'class.flatbuffers::Table *', 'N/A'] 5 0 315 79 22 300 5 438 195
flatbuffers::BinaryAnnotator::BuildStruct(unsignedlong,std::__1::vector >&,std::__1::basic_string ,std::__1::allocator >,reflection::Objectconst*)::$_2::operator()(reflection::Fieldconst*)const /src/flatbuffers/src/binary_annotator.cpp 2 ['class.anon.95 *', 'struct.reflection::Object *'] 5 0 904 170 120 122 0 286 127
flatbuffers::GetAnyValueS(reflection::BaseType,unsignedcharconst*,reflection::Schemaconst*,int) /src/flatbuffers/src/reflection.cpp 5 ['class.std::__1::basic_string *', 'int ', 'char *', 'struct.reflection::Object *', 'int '] 4 0 279 65 50 162 2 330 107
flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) /src/flatbuffers/src/idl_parser.cpp 4 ['class.flatbuffers::CheckedError *', 'char *', 'class.flatbuffers::Parser *', 'N/A'] 4 0 168 34 28 39 0 138 78
flatbuffers::BinaryAnnotator::GetOrBuildVTable(unsignedlong,reflection::Objectconst*,unsignedlong)::$_0::operator()(reflection::Fieldconst*)const /src/flatbuffers/src/binary_annotator.cpp 2 ['class.anon.37 *', 'struct.reflection::Object *'] 3 0 547 117 75 98 0 189 77
flatbuffers::(anonymousnamespace)::TextCodeGenerator::GenerateMakeRule(flatbuffers::Parserconst&,std::__1::basic_string ,std::__1::allocator >const&,std::__1::basic_string ,std::__1::allocator >const&,std::__1::basic_string ,std::__1::allocator >&) /src/flatbuffers/src/idl_gen_text.cpp 5 ['class.std::bad_alloc *', 'class.flatbuffers::Parser *', 'class.std::__1::basic_string *', 'class.std::__1::basic_string *', 'class.std::__1::basic_string *'] 2 0 23 3 2 13 0 79 75
flatbuffers::ResizeAnyVector(reflection::Schemaconst&,unsignedint,flatbuffers::VectorOfAnyconst*,unsignedint,unsignedint,std::__1::vector >*,reflection::Objectconst*) /src/flatbuffers/src/reflection.cpp 7 ['struct.reflection::Object *', 'int ', 'union.anon.60 *', 'int ', 'int ', 'class.std::__1::vector.10 *', 'struct.reflection::Object *'] 5 0 86 11 5 178 0 234 67

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

Functions statically reachable by fuzzers
71.1%
1311/1844
Cyclomatic complexity statically reachable by fuzzers
79.6%
8240 / 10346

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

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
flatbuffers::Parser::ParseRoot(charconst*,charconst**,charconst*) 74 33 44.59% ['parser_fuzzer', 'scalar_fuzzer']
flatbuffers::Parser::CheckPrivateLeak() 34 2 5.882% ['parser_fuzzer', 'scalar_fuzzer']
boolflatbuffers::JsonPrinter::PrintScalar (signedchar,flatbuffers::Typeconst&,int) 36 14 38.88% []
boolflatbuffers::JsonPrinter::PrintScalar (short,flatbuffers::Typeconst&,int) 36 6 16.66% []
boolflatbuffers::JsonPrinter::PrintScalar (unsignedshort,flatbuffers::Typeconst&,int) 36 6 16.66% []
boolflatbuffers::JsonPrinter::PrintScalar (int,flatbuffers::Typeconst&,int) 36 6 16.66% []
boolflatbuffers::JsonPrinter::PrintScalar (unsignedint,flatbuffers::Typeconst&,int) 36 6 16.66% []
boolflatbuffers::JsonPrinter::PrintScalar (long,flatbuffers::Typeconst&,int) 36 6 16.66% []
boolflatbuffers::JsonPrinter::PrintScalar (float,flatbuffers::Typeconst&,int) 36 6 16.66% []
boolflatbuffers::JsonPrinter::PrintScalar (double,flatbuffers::Typeconst&,int) 36 6 16.66% []
flatbuffers::JsonPrinter::PrintOffset(voidconst*,flatbuffers::Typeconst&,int,unsignedcharconst*,int) 60 28 46.66% ['scalar_fuzzer', 'monster_fuzzer']

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/flatbuffers/tests/fuzzer/../../tests/test_assert.h ['scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/flatbuffers_parser_fuzzer.cc ['parser_fuzzer'] ['parser_fuzzer']
/src/flatbuffers/tests/fuzzer/../../src/binary_annotator.h ['annotator_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/string.h ['annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector_downward.h ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection.h ['annotator_fuzzer', 'parser_fuzzer', 'scalar_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/default_allocator.h ['parser_fuzzer', 'scalar_fuzzer'] []
/src/flatbuffers/tests/fuzzer/flexbuffers_verifier_fuzzer.cc ['flexverifier_fuzzer'] ['flexverifier_fuzzer']
/usr/local/bin/../include/c++/v1/istream [] []
/src/flatbuffers/src/binary_annotator.cpp ['annotator_fuzzer'] ['annotator_fuzzer']
/src/flatbuffers/tests/fuzzer/flatbuffers_scalar_fuzzer.cc ['scalar_fuzzer'] ['scalar_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/allocator.h ['parser_fuzzer', 'scalar_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h ['annotator_fuzzer', 'parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/code_generator.h [] []
/usr/include/x86_64-linux-gnu/sys/stat.h [] []
/usr/local/bin/../include/c++/v1/optional ['annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flatbuffer_builder.h ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h ['verifier_fuzzer', 'annotator_fuzzer', 'monster_fuzzer'] []
/usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h [] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h ['verifier_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/array.h ['scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/test_assert.cpp ['scalar_fuzzer', 'monster_fuzzer'] ['scalar_fuzzer', 'monster_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/hash.h ['parser_fuzzer', 'scalar_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/struct.h ['scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection_generated.h ['annotator_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../tests/cpp17/generated_cpp17/monster_test_generated.h ['verifier_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/test_init.h ['scalar_fuzzer'] ['scalar_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/idl.h ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/usr/include/ctype.h ['annotator_fuzzer', 'parser_fuzzer', 'scalar_fuzzer'] []
/src/flatbuffers/src/idl_parser.cpp ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h ['flexverifier_fuzzer', 'verifier_fuzzer', 'parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/usr/local/bin/../include/c++/v1/exception [] []
/src/flatbuffers/tests/fuzzer/flatbuffers_verifier_fuzzer.cc ['verifier_fuzzer'] ['verifier_fuzzer']
/src/flatbuffers/tests/fuzzer/../../src/util.cpp [] ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer']
/src/flatbuffers/tests/fuzzer/flatbuffers_monster_fuzzer.cc ['monster_fuzzer'] ['monster_fuzzer']
/usr/local/bin/../include/c++/v1/math.h ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/src/idl_gen_text.cpp ['scalar_fuzzer', 'monster_fuzzer'] ['scalar_fuzzer', 'monster_fuzzer']
/usr/local/bin/../include/c++/v1/iosfwd [] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h ['verifier_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h ['verifier_fuzzer', 'annotator_fuzzer', 'parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flex_flat_util.h ['verifier_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h ['verifier_fuzzer', 'annotator_fuzzer', 'parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/src/util.cpp ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] ['parser_fuzzer', 'scalar_fuzzer', 'monster_fuzzer']
/usr/local/bin/../include/c++/v1/stdexcept [] []
/usr/include/stdlib.h ['parser_fuzzer', 'scalar_fuzzer'] []
/src/flatbuffers/src/reflection.cpp ['annotator_fuzzer'] ['annotator_fuzzer']
/src/flatbuffers/tests/fuzzer/flatbuffers_annotator_fuzzer.cc ['annotator_fuzzer'] ['annotator_fuzzer']

Directories in report

Directory
/src/flatbuffers/src/
/src/flatbuffers/tests/fuzzer/
/src/flatbuffers/tests/fuzzer/../../src/
/src/flatbuffers/tests/fuzzer/../../tests/
/usr/include/
/usr/include/x86_64-linux-gnu/sys/
/usr/include/x86_64-linux-gnu/bits/
/src/flatbuffers/tests/
/usr/local/bin/../include/c++/v1/
/src/flatbuffers/tests/fuzzer/../../tests/cpp17/generated_cpp17/
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/

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
flexverifier_fuzzer fuzzerLogFile-0-bwhecQoDkz.data fuzzerLogFile-0-bwhecQoDkz.data.yaml flexverifier_fuzzer.covreport
verifier_fuzzer fuzzerLogFile-0-06Zx6zylsv.data fuzzerLogFile-0-06Zx6zylsv.data.yaml verifier_fuzzer.covreport
annotator_fuzzer fuzzerLogFile-0-sPlk9EMXvx.data fuzzerLogFile-0-sPlk9EMXvx.data.yaml annotator_fuzzer.covreport
parser_fuzzer fuzzerLogFile-0-TDOk72A22e.data fuzzerLogFile-0-TDOk72A22e.data.yaml parser_fuzzer.covreport
scalar_fuzzer fuzzerLogFile-0-ztZu3wVHvW.data fuzzerLogFile-0-ztZu3wVHvW.data.yaml scalar_fuzzer.covreport
monster_fuzzer fuzzerLogFile-0-1LxH2Uia6B.data fuzzerLogFile-0-1LxH2Uia6B.data.yaml monster_fuzzer.covreport

Function call coverage

This section shows a chosen list of functions / methods calls and their relative coverage information. By static analysis of the target project code, all of these function call and their caller information, including the source file or class and line number that initiate the call are captured. Column 1 is the function name of that selected functions or methods. Column 2 of each row indicate if the target function covered by any fuzzer calltree information. Column 3 lists all fuzzers (or no fuzzers at all) that have coered that particular function call dynamically. Column 4 shows list of parent function for the specific function call, while column 5 shows possible blocker functions that make the fuzzers fail to reach the specific functions. Both column 4 and 5 will only show information if none of the fuzzers cover the target function calls.

Function in each files in report

Target sink Callsite location Reached by fuzzer Function call path Covered by fuzzer Possible branch blockers