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: 64bit_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: annotator_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: scalar_fuzzer
Call tree
Fuzz blockers
Runtime coverage analysis
Files reached
Fuzzer: parser_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: 2023-09-25

Project overview: flatbuffers

High level conclusions

Reachability and coverage overview

Functions statically reachable by fuzzers
52.0%
1036 / 2004
Cyclomatic complexity statically reachable by fuzzers
62.0%
6686 / 10785
Runtime code coverage of functions
63.0%
1255 / 2004

Warning: The number of runtime covered functions are larger than the number of reachable functions. This means that Fuzz Introspector found there are more functions covered at runtime than what is considered reachable based on the static analysis. This is a limitation in the analysis as anything covered at runtime is by definition reachable by the fuzzers.
This is likely due to a limitation in the static analysis. In this case, the count of functions covered at runtime is the true value, which means this is what should be considered "achieved" by the fuzzer.

Use the project functions table below to query all functions that were not covered at runtime.

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 350 59 13 9 1032 569 flatbuffers_verifier_fuzzer.cc
64bit_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_64bit_fuzzer.cc 288 274 9 11 678 404 flatbuffers_64bit_fuzzer.cc
annotator_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_annotator_fuzzer.cc 562 386 11 15 2814 1836 flatbuffers_annotator_fuzzer.cc
scalar_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_scalar_fuzzer.cc 1313 985 15 27 11807 4457 flatbuffers_scalar_fuzzer.cc
parser_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_parser_fuzzer.cc 1010 753 15 17 10583 3785 flatbuffers_parser_fuzzer.cc
monster_fuzzer /src/flatbuffers/tests/fuzzer/flatbuffers_monster_fuzzer.cc 798 1326 14 23 2887 1494 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 , unsigned int>::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
350
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 40
/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: 64bit_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 15 8.57%
gold [1:9] 2 1.14%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 158 90.2%
All colors 175 100

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 0 None 0 0 boolflatbuffers::Verifier::VerifyVectorOfTables (flatbuffers::Vector ,unsignedint>const*) call site: 00000 /src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h:172
0 0 3 :

['std::__1::basic_string , std::__1::allocator >::operator=(std::__1::basic_string , std::__1::allocator >&&)', 'std::__1::basic_string , std::__1::allocator >::~basic_string()', 'std::__1::basic_string , std::__1::allocator >::basic_string (char const*)']

0 0 flatbuffers::ReadEnvironmentVariable(charconst*,std::__1::basic_string ,std::__1::allocator >*) call site: 00000 /src/flatbuffers/src/util.cpp:434

Runtime coverage analysis

Covered functions
253
Functions that are reachable but not covered
13
Reachable functions
288
Percentage of reachable functions covered
95.49%
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_64bit_fuzzer.cc 10
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h 29
/src/flatbuffers/tests/fuzzer/../../tests/64bit/test_64bit_generated.h 16
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h 7
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 6
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h 18
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h 11
/src/flatbuffers/tests/fuzzer/../../tests/test_assert.h 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h 1
/src/flatbuffers/tests/test_assert.cpp 1
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/string.h 2

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 79 11.5%
gold [1:9] 0 0.0%
yellow [10:29] 6 0.87%
greenyellow [30:49] 14 2.04%
lawngreen 50+ 587 85.5%
All colors 686 100

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
14 14 2 :

['std::__1::optional flatbuffers::BinaryAnnotator::ReadScalar (unsigned long) const', 'std::__1::optional ::optional (unsigned long&)']

458 4236 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1053
0 2 2 :

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

23 33 flatbuffers::BinaryAnnotator::GetOrBuildVTable(unsignedlong,reflection::Objectconst*,unsignedlong)::$_0::operator()(reflection::Fieldconst*)const call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:404
0 0 None 338 6696 flatbuffers::BinaryAnnotator::BuildTable(unsignedlong,flatbuffers::BinarySectionType,reflection::Objectconst*) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:701
0 0 None 106 1444 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1270
0 0 None 98 1568 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1132
0 0 None 98 1568 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1157
0 0 None 93 215 flatbuffers::BinaryAnnotator::GetOrBuildVTable(unsignedlong,reflection::Objectconst*,unsignedlong) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:315
0 0 None 79 336 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1338
0 0 None 79 334 flatbuffers::BinaryAnnotator::BuildVector(unsignedlong,reflection::Objectconst*,reflection::Fieldconst*,unsignedlong,std::__1::map ,std::__1::allocator >>) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:1189
0 0 None 70 116 flatbuffers::BinaryAnnotator::GetOrBuildVTable(unsignedlong,reflection::Objectconst*,unsignedlong) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:457
0 0 None 58 179 flatbuffers::BinaryAnnotator::BuildHeader(unsignedlong) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:164
0 0 None 58 165 flatbuffers::BinaryAnnotator::BuildHeader(unsignedlong) call site: 00000 /src/flatbuffers/src/binary_annotator.cpp:196

Runtime coverage analysis

Covered functions
232
Functions that are reachable but not covered
159
Reachable functions
562
Percentage of reachable functions covered
71.71%
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 32
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection_generated.h 27
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 5
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h 5
/src/flatbuffers/src/binary_annotator.cpp 18
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h 34
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h 23
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h 13
/usr/local/bin/../include/c++/v1/optional 13
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/string.h 2
/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: 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 1223 68.1%
gold [1:9] 0 0.0%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 572 31.8%
All colors 1795 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::Check()', 'flatbuffers::(anonymous namespace)::NoError()', 'flatbuffers::Parser::SkipAnyJsonValue()', 'flatbuffers::CheckedError::~CheckedError()']

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:1508
290 290 1 :

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

290 300 flatbuffers::Parser::ParseAnyValue(flatbuffers::Value&,flatbuffers::FieldDef*,unsignedlong,flatbuffers::StructDefconst*,unsignedlong,bool) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:1423
246 264 24 :

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

246 268 flatbuffers::Parser::CheckPrivateLeak() call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3594
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:2772
27 27 2 :

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

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:117
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:117
24 24 4 :

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

24 71 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
24 24 4 :

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

24 71 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
24 24 4 :

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

24 64 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
24 24 4 :

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

24 64 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
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 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
24 24 4 :

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

24 62 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263

Runtime coverage analysis

Covered functions
385
Functions that are reachable but not covered
760
Reachable functions
1313
Percentage of reachable functions covered
42.12%
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 79
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 9
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flatbuffer_builder.h 29
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector_downward.h 21
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h 108
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/default_allocator.h 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/allocator.h 2
/src/flatbuffers/src/idl_parser.cpp 101
/src/flatbuffers/src/util.cpp 16
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h 34
/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: 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 0 409 27.5%
gold [1:9] 61 4.11%
yellow [10:29] 42 2.83%
greenyellow [30:49] 17 1.14%
lawngreen 50+ 955 64.3%
All colors 1484 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 :

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

240 268 flatbuffers::Parser::CheckPrivateLeak() call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3594
27 27 2 :

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

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:117
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:117
0 79 7 :

['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 >&&)', 'std::__1::basic_string , std::__1::allocator >::~basic_string()', 'flatbuffers::Parser::Error(std::__1::basic_string , std::__1::allocator > const&)', 'std::__1::basic_string , std::__1::allocator > flatbuffers::NumToString (unsigned long)', '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 >&&, char const*)', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(char const*, std::__1::basic_string , std::__1::allocator >&&)']

0 79 flatbuffers::CheckedErrorflatbuffers::EnumValBuilder::ValidateImpl<(flatbuffers::BaseType)10,unsignedlong>(long*,int) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:2437
0 56 2 :

['flatbuffers::Parser::Error(std::__1::basic_string , std::__1::allocator > const&)', 'std::__1::basic_string , std::__1::allocator > std::__1::operator+ , std::__1::allocator >(char const*, std::__1::basic_string , std::__1::allocator > const&)']

0 56 flatbuffers::Parser::ParseDecl(charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:2841
0 0 None 2820 19117 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3650
0 0 None 2820 18863 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3679
0 0 None 2820 18863 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3694
0 0 None 2820 18863 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3708
0 0 None 2820 18863 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3717
0 0 None 2820 18863 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3721
0 0 None 1401 10504 flatbuffers::Parser::DoParse(charconst*,charconst**,charconst*,charconst*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3749

Runtime coverage analysis

Covered functions
541
Functions that are reachable but not covered
157
Reachable functions
1010
Percentage of reachable functions covered
84.46%
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 79
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 5
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flatbuffer_builder.h 27
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector_downward.h 21
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h 45
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/default_allocator.h 2
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/allocator.h 2
/src/flatbuffers/src/idl_parser.cpp 100
/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: 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 0 114 18.2%
gold [1:9] 5 0.80%
yellow [10:29] 5 0.80%
greenyellow [30:49] 2 0.32%
lawngreen 50+ 498 79.8%
All colors 624 100

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 :

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

240 268 flatbuffers::Parser::CheckPrivateLeak() call site: 00000 /src/flatbuffers/src/idl_parser.cpp:3594
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 >&,bool,int,charconst*)const call site: 00000 /src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flexbuffers.h:592
126 2019 23 :

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

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:2220
67 67 2 :

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

67 76 flatbuffers::Parser::ParseString(flatbuffers::Value&,bool) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:1293
33 33 1 :

['unsigned int flatbuffers::FlatBufferBuilderImpl ::EndVector (unsigned long)']

33 384 flatbuffers::Parser::ParseVector(flatbuffers::Typeconst&,unsignedint*,flatbuffers::FieldDef*,unsignedlong) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:1754
27 27 2 :

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

27 83 flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) call site: 00000 /src/flatbuffers/src/idl_parser.cpp:117
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:117
24 24 4 :

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

24 71 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
24 24 4 :

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

24 71 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
24 24 4 :

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

24 64 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
24 24 4 :

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

24 64 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263
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 voidflatbuffers::JsonPrinter::GenField (flatbuffers::FieldDefconst&,flatbuffers::Tableconst*,bool,int) call site: 00000 /src/flatbuffers/src/idl_gen_text.cpp:263

Runtime coverage analysis

Covered functions
967
Functions that are reachable but not covered
127
Reachable functions
798
Percentage of reachable functions covered
84.09%
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 28
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h 40
/src/flatbuffers/tests/fuzzer/../../tests/cpp17/generated_cpp17/monster_test_generated.h 30
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h 7
/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 68
/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 *'] 13 0 636 112 95 606 0 977 694
flatbuffers::CopyTable(flatbuffers::FlatBufferBuilderImpl &,reflection::Schemaconst&,reflection::Objectconst&,flatbuffers::Tableconst&,bool) /src/flatbuffers/src/reflection.cpp 5 ['class.flatbuffers::FlatBufferBuilderImpl *', 'struct.reflection::Object *', 'struct.reflection::Object *', 'class.flatbuffers::Table *', 'bool'] 12 0 775 188 134 306 1 620 370
flatbuffers::Parser::Deserialize(unsignedcharconst*,unsignedlong) /src/flatbuffers/src/idl_parser.cpp 3 ['class.flatbuffers::Parser *', 'char *', 'size_t'] 12 0 65 14 6 479 0 779 327
flatbuffers::(anonymousnamespace)::VerifyObject(flatbuffers::Verifier&,reflection::Schemaconst&,reflection::Objectconst&,flatbuffers::Tableconst*,bool) /src/flatbuffers/src/reflection.cpp 5 ['class.flatbuffers::Verifier.112 *', 'struct.reflection::Object *', 'struct.reflection::Object *', 'class.flatbuffers::Table *', 'bool'] 13 0 315 79 22 300 5 438 192
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.110 *', 'struct.reflection::Object *'] 9 0 869 155 110 122 0 273 117
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'] 9 0 279 65 50 162 2 330 107
flatbuffers::CheckedErrorflatbuffers::(anonymousnamespace)::atot (charconst*,flatbuffers::Parser&,float*) /src/flatbuffers/src/idl_parser.cpp 4 ['struct.std::__1::pair.331 *', 'char *', 'class.flatbuffers::Parser *', 'float *'] 5 0 168 34 28 39 0 138 78

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

Functions statically reachable by fuzzers
70.0%
1399 / 2004
Cyclomatic complexity statically reachable by fuzzers
78.0%
8363 / 10785

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::BinaryAnnotator::BuildHeader(unsignedlong) 58 31 53.44% ['annotator_fuzzer']
voidflatbuffers::JsonPrinter::PrintScalar (signedchar,flatbuffers::Typeconst&,int) 36 14 38.88% []
voidflatbuffers::JsonPrinter::PrintScalar (short,flatbuffers::Typeconst&,int) 36 6 16.66% []
voidflatbuffers::JsonPrinter::PrintScalar (unsignedshort,flatbuffers::Typeconst&,int) 36 6 16.66% []
voidflatbuffers::JsonPrinter::PrintScalar (int,flatbuffers::Typeconst&,int) 36 6 16.66% []
voidflatbuffers::JsonPrinter::PrintScalar (unsignedint,flatbuffers::Typeconst&,int) 36 6 16.66% []
voidflatbuffers::JsonPrinter::PrintScalar (long,flatbuffers::Typeconst&,int) 36 6 16.66% []
voidflatbuffers::JsonPrinter::PrintScalar (float,flatbuffers::Typeconst&,int) 36 6 16.66% []
voidflatbuffers::JsonPrinter::PrintScalar (double,flatbuffers::Typeconst&,int) 36 6 16.66% []
flatbuffers::Parser::ParseRoot(charconst*,charconst**,charconst*) 74 30 40.54% ['scalar_fuzzer', 'parser_fuzzer']
flatbuffers::Parser::CheckPrivateLeak() 34 2 5.882% ['scalar_fuzzer', 'parser_fuzzer']
flatbuffers::JsonPrinter::PrintOffset(voidconst*,flatbuffers::Typeconst&,int,unsignedcharconst*,int) 57 29 50.87% ['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/../../include/flatbuffers/flexbuffers.h ['flexverifier_fuzzer', 'verifier_fuzzer', 'scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/reflection.h ['annotator_fuzzer', 'scalar_fuzzer', 'parser_fuzzer'] []
/src/flatbuffers/tests/test_assert.cpp ['64bit_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] ['64bit_fuzzer', 'scalar_fuzzer', 'monster_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/allocator.h ['scalar_fuzzer', 'parser_fuzzer'] []
/src/flatbuffers/src/binary_annotator.cpp ['annotator_fuzzer'] ['annotator_fuzzer']
/usr/include/ctype.h ['annotator_fuzzer', 'scalar_fuzzer', 'parser_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/util.h ['64bit_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/usr/local/bin/../include/c++/v1/optional ['annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/usr/local/bin/../include/c++/v1/iosfwd [] []
/usr/include/x86_64-linux-gnu/sys/stat.h [] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector_downward.h ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../tests/64bit/test_64bit_generated.h ['64bit_fuzzer'] []
/src/flatbuffers/tests/fuzzer/flatbuffers_annotator_fuzzer.cc ['annotator_fuzzer'] ['annotator_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/array.h ['scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/code_generator.h [] []
/src/flatbuffers/src/idl_gen_text.cpp ['scalar_fuzzer', 'monster_fuzzer'] ['scalar_fuzzer', 'monster_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flex_flat_util.h ['verifier_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../src/util.cpp [] ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/string.h ['64bit_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../src/binary_annotator.h ['annotator_fuzzer'] []
/src/flatbuffers/src/reflection.cpp ['annotator_fuzzer'] ['annotator_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/table.h ['verifier_fuzzer', '64bit_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/idl.h ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/src/idl_parser.cpp ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/flatbuffer_builder.h ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/default_allocator.h ['scalar_fuzzer', 'parser_fuzzer'] []
/usr/local/bin/../include/c++/v1/math.h ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/usr/local/bin/../include/c++/v1/istream [] []
/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/flatbuffers_verifier_fuzzer.cc ['verifier_fuzzer'] ['verifier_fuzzer']
/src/flatbuffers/tests/fuzzer/../../tests/test_assert.h ['64bit_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/flexbuffers_verifier_fuzzer.cc ['flexverifier_fuzzer'] ['flexverifier_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/vector.h ['verifier_fuzzer', '64bit_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/flatbuffers_scalar_fuzzer.cc ['scalar_fuzzer'] ['scalar_fuzzer']
/src/flatbuffers/tests/fuzzer/test_init.h ['scalar_fuzzer'] ['scalar_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/base.h ['verifier_fuzzer', '64bit_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/flatbuffers_64bit_fuzzer.cc ['64bit_fuzzer'] ['64bit_fuzzer']
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/hash.h ['scalar_fuzzer', 'parser_fuzzer'] []
/usr/local/bin/../include/c++/v1/exception [] []
/src/flatbuffers/tests/fuzzer/flatbuffers_monster_fuzzer.cc ['monster_fuzzer'] ['monster_fuzzer']
/usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h [] []
/src/flatbuffers/tests/fuzzer/../../tests/cpp17/generated_cpp17/monster_test_generated.h ['verifier_fuzzer', 'monster_fuzzer'] []
/usr/local/bin/../include/c++/v1/stdexcept [] []
/src/flatbuffers/tests/fuzzer/../../tests/64bit/test_64bit_bfbs_generated.h [] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/verifier.h ['verifier_fuzzer', '64bit_fuzzer', 'annotator_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/src/util.cpp ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] ['scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer']
/usr/include/stdlib.h ['scalar_fuzzer', 'parser_fuzzer'] []
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/buffer.h ['verifier_fuzzer', '64bit_fuzzer', 'annotator_fuzzer', 'scalar_fuzzer', 'parser_fuzzer', 'monster_fuzzer'] []
/src/flatbuffers/tests/fuzzer/flatbuffers_parser_fuzzer.cc ['parser_fuzzer'] ['parser_fuzzer']

Directories in report

Directory
/src/flatbuffers/tests/fuzzer/../../tests/64bit/
/usr/include/x86_64-linux-gnu/bits/
/usr/include/
/src/flatbuffers/tests/fuzzer/../../tests/
/src/flatbuffers/tests/fuzzer/../../tests/cpp17/generated_cpp17/
/src/flatbuffers/tests/fuzzer/../../include/flatbuffers/
/usr/include/x86_64-linux-gnu/sys/
/src/flatbuffers/tests/fuzzer/../../src/
/src/flatbuffers/tests/fuzzer/
/src/flatbuffers/tests/
/usr/local/bin/../include/c++/v1/
/src/flatbuffers/src/

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-QbY4d6qGgE.data fuzzerLogFile-0-QbY4d6qGgE.data.yaml flexverifier_fuzzer.covreport
verifier_fuzzer fuzzerLogFile-0-xy2Rrs4JZ8.data fuzzerLogFile-0-xy2Rrs4JZ8.data.yaml verifier_fuzzer.covreport
64bit_fuzzer fuzzerLogFile-0-cSRoc6G7xY.data fuzzerLogFile-0-cSRoc6G7xY.data.yaml 64bit_fuzzer.covreport
annotator_fuzzer fuzzerLogFile-0-W9mraFZ97O.data fuzzerLogFile-0-W9mraFZ97O.data.yaml annotator_fuzzer.covreport
scalar_fuzzer fuzzerLogFile-0-uqe9kijwTs.data fuzzerLogFile-0-uqe9kijwTs.data.yaml scalar_fuzzer.covreport
parser_fuzzer fuzzerLogFile-0-gRo3Omikqh.data fuzzerLogFile-0-gRo3Omikqh.data.yaml parser_fuzzer.covreport
monster_fuzzer fuzzerLogFile-0-uSmoATwKDW.data fuzzerLogFile-0-uSmoATwKDW.data.yaml monster_fuzzer.covreport