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

Table of contents

Project overview: capnproto
High level conclusions
Reachability and coverage overview
Fuzzers overview
Project functions overview
Fuzzer details
Fuzzer: capnp-llvm-fuzzer-testcase
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: 2023-01-19

Project overview: capnproto

High level conclusions

Reachability and coverage overview

Functions statically reachable by fuzzers
5.2%
606/11647
Cyclomatic complexity statically reachable by fuzzers
3.64%
2031/55725
Functions covered at runtime
1664

Fuzzers overview

Fuzzer Fuzzer filename Functions Reached Functions unreached Fuzzer depth Files reached Basic blocks reached Cyclomatic complexity Details
capnp-llvm-fuzzer-testcase /src/capnproto/c++/src/capnp/llvm-fuzzer-testcase.c++ 609 11041 24 44 3025 2066 llvm-fuzzer-testcase.c++

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: capnp-llvm-fuzzer-testcase

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 0 110 15.6%
gold [1:9] 2 0.28%
yellow [10:29] 0 0.0%
greenyellow [30:49] 0 0.0%
lawngreen 50+ 593 84.1%
All colors 705 100

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
1956 18872 46 :

['capnp::_::WireHelpers::amplifiedRead(capnp::_::SegmentReader*, unsigned int)', 'capnp::_::WireHelpers::roundBitsUpToWords(unsigned long)', 'kj::_::DebugComparison kj::_::DebugExpression ::operator<= (unsigned int&)', 'capnp::_::WirePointer::ListRef::elementCount() const', 'kj::_::Debug::Fault::Fault &, char const (&) [41]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugExpression &, char const (&) [41])', 'kj::_::Debug::Fault::Fault &, char const (&) [84]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [84])', 'kj::_::Debug::Fault::Fault &, char const (&) [76]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [76])', 'capnp::_::DirectWireValue ::get() const', 'kj::_::DebugComparison ::operator bool() const', 'capnp::_::WireHelpers::boundsCheck(capnp::_::SegmentReader*, capnp::word const*, unsigned int)', 'kj::_::DebugComparison ::operator bool() const', 'kj::_::Debug::Fault::Fault (char const*, int, kj::Exception::Type, char const*, char const*, char const (&) [106])', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (unsigned int&) const', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (unsigned long&&) const', 'kj::_::Debug::Fault::Fault &, char const (&) [57]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [57])', 'capnp::_::WireHelpers::followFars(capnp::_::WirePointer const*&, capnp::word const*, capnp::_::SegmentReader*&)', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (unsigned short&&) const', 'capnp::_::WirePointer::StructRef::wordSize() const', 'kj::_::DebugComparison kj::_::DebugExpression ::operator> (int&&)', 'kj::_::Debug::Fault::~Fault()', 'capnp::_::WirePointer::target(capnp::_::SegmentReader*) const', 'capnp::_::WirePointer::isNull() const', 'kj::_::DebugExpression ::operator bool()', 'capnp::_::WirePointer::ListRef::inlineCompositeWordCount() const', 'kj::_::DebugComparison ::operator bool() const', 'kj::_::Debug::Fault::Fault &, char const (&) [84]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [84])', 'kj::_::DebugComparison ::operator bool() const', 'kj::_::DebugComparison kj::_::DebugExpression ::operator== (capnp::_::WirePointer::Kind&&)', 'kj::_::Debug::Fault::Fault &, char const (&) [319]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugExpression &, char const (&) [319])', 'kj::_::DebugComparison ::operator bool() const', 'capnp::word const* kj::_::readMaybe (kj::Maybe &&)', 'unsigned long capnp::upgradeBound (unsigned int)', 'kj::_::DebugComparison kj::_::DebugExpression ::operator<= (unsigned int&)', 'capnp::_::WirePointer::kind() const', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (bool&&) const', 'capnp::_::dataBitsPerElement(capnp::ElementSize)', 'kj::_::Debug::Fault::Fault &, char const (&) [72]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [72])', 'kj::_::Debug::Fault::Fault &, char const (&) [61]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [61])', 'kj::_::Debug::Fault::Fault &, char const (&) [79]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [79])', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (capnp::_::WirePointer::Kind&&) const', 'capnp::_::WirePointer::inlineCompositeListElementCount() const', 'kj::_::DebugComparison kj::_::DebugExpression ::operator> (unsigned int&&)', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (int&) const', 'capnp::_::ListReader::ListReader(capnp::_::SegmentReader*, capnp::_::CapTableReader*, void const*, unsigned int, unsigned int, unsigned int, unsigned short, capnp::ElementSize, int)', 'capnp::_::WirePointer::ListRef::elementSize() const', 'capnp::_::pointersPerElement(capnp::ElementSize)']

1956 18874 capnp::_::WireHelpers::readListPointer(capnp::_::SegmentReader*,capnp::_::CapTableReader*,capnp::_::WirePointerconst*,capnp::wordconst*,capnp::wordconst*,capnp::ElementSize,int,bool) call site /src/capnproto/c++/src/capnp/layout.c++:2267
1693 3023 28 :

['kj::String::operator=(kj::String&&)', 'kj::String::String()', 'kj::_::Deferred )::$_1>::~Deferred()', 'kj::StringPtr::StringPtr(char const*)', '__clang_call_terminate', 'getenv', 'kj::String kj::str (char const (&) [6], kj::StringPtr&&, char const (&) [17])', 'kj::ArrayPtr kj::arrayPtr (kj::String*, unsigned long)', 'unsigned long kj::size (kj::String (&) [32ul])', 'fgets', 'kj::trimSourceFilename(kj::StringPtr)', 'kj::String::~String()', 'pclose', 'kj::String kj::strArray >(kj::ArrayPtr &&, char const*)', 'popen', 'getpid', 'kj::_::Deferred )::$_0> kj::defer )::$_0>(kj::stringifyStackTrace(kj::ArrayPtr )::$_0&&)', 'pthread_mutex_lock', 'kj::_::Deferred )::$_0>::~Deferred()', 'strstr', 'kj::String kj::str (char const (&) [20], int&&, char const (&) [6], kj::String&)', 'strlen', 'kj::heapString(char const*)', 'kj::String::cStr() const', 'kj::String kj::strArray &>(kj::ArrayPtr &, char const*)', 'access', 'kj::_::Deferred )::$_1> kj::defer )::$_1>(kj::stringifyStackTrace(kj::ArrayPtr )::$_1&&)', 'unsetenv']

1693 3031 kj::stringifyStackTrace(kj::ArrayPtr ) call site /src/capnproto/c++/src/kj/exception.c++:266
1428 1430 4 :

['kj::getStackTrace()', 'void kj::_::Debug::log (char const*, int, kj::LogSeverity, char const*, char const (&) [71], unsigned int&, unsigned int&, kj::String&&)', 'kj::_::Debug::shouldLog(kj::LogSeverity)', 'kj::String::~String()']

1428 1462 kj::_::rehash(kj::ArrayPtr ,unsignedlong) call site /src/capnproto/c++/src/kj/table.c++:186
674 4691 21 :

['kj::_::DebugComparison ::operator bool() const', 'kj::_::DebugComparison kj::_::DebugExpression ::operator== (capnp::_::WirePointer::Kind&&)', 'capnp::_::StructReader::StructReader(capnp::_::SegmentReader*, capnp::_::CapTableReader*, void const*, capnp::_::WirePointer const*, unsigned int, unsigned short, int)', 'kj::_::Debug::Fault::Fault &, char const (&) [87]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [87])', 'capnp::word const* kj::_::readMaybe (kj::Maybe &&)', 'capnp::_::WirePointer::isNull() const', 'capnp::_::WirePointer::kind() const', 'kj::_::Debug::Fault::Fault &, char const (&) [76]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugComparison &, char const (&) [76])', 'capnp::_::DirectWireValue ::get() const', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (bool&&) const', 'capnp::_::WireHelpers::boundsCheck(capnp::_::SegmentReader*, capnp::word const*, unsigned int)', 'kj::_::DebugComparison ::operator bool() const', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (capnp::_::WirePointer::Kind&&) const', 'capnp::_::WirePointer::target(capnp::_::SegmentReader*) const', 'capnp::_::WireHelpers::followFars(capnp::_::WirePointer const*&, capnp::word const*, capnp::_::SegmentReader*&)', 'capnp::_::WirePointer::StructRef::wordSize() const', 'kj::_::DebugExpression kj::_::DebugExpressionStart::operator<< (int&) const', 'kj::_::Debug::Fault::Fault &, char const (&) [322]>(char const*, int, kj::Exception::Type, char const*, char const*, kj::_::DebugExpression &, char const (&) [322])', 'kj::_::DebugComparison kj::_::DebugExpression ::operator> (int&&)', 'kj::_::Debug::Fault::~Fault()', 'kj::_::DebugExpression ::operator bool()']

674 4693 capnp::_::WireHelpers::readStructPointer(capnp::_::SegmentReader*,capnp::_::CapTableReader*,capnp::_::WirePointerconst*,capnp::wordconst*,capnp::wordconst*,int) call site /src/capnproto/c++/src/capnp/layout.c++:2176
628 628 1 :

['kj::ArrayBuilder >::Entry>::truncate(unsigned long)']

632 797 kj::Vector >::Entry>::setCapacity(unsignedlong) call site /src/capnproto/c++/./src/kj/vector.h:137
18 47 2 :

['kj::String kj::str (char const (&) [41], unsigned long&&, char const (&) [9], char const*&, char&&)', 'kj::getExceptionCallback()']

117 9642 kj::_::(anonymousnamespace)::makeDescriptionImpl(kj::_::(anonymousnamespace)::DescriptionStyle,charconst*,int,charconst*,charconst*,kj::ArrayPtr ) call site /src/capnproto/c++/src/kj/debug.c++:220
16 16 3 :

['kj::_::NullableValue >::operator*() &', 'kj::_::Mutex::lock(kj::_::Mutex::Exclusivity, kj::Maybe >, kj::NoopSourceLocation)::$_2::operator()(kj::Quantity ) const', 'kj::Maybe ::Maybe(timespec&&)']

16 16 kj::Maybe &>)()))>kj::Maybe >::map >,kj::NoopSourceLocation)::$_2>(kj::_::Mutex::lock(kj::_::Mutex::Exclusivity,kj::Maybe >,kj::NoopSourceLocation)::$_2&&)& call site /src/capnproto/c++/src/kj/common.h:1536
4 4 2 :

['isspace', 'strchr']

63 9557 kj::_::(anonymousnamespace)::makeDescriptionImpl(kj::_::(anonymousnamespace)::DescriptionStyle,charconst*,int,charconst*,charconst*,kj::ArrayPtr ) call site /src/capnproto/c++/src/kj/debug.c++:227
2 14 2 :

['strlen', 'kj::_::(anonymous namespace)::IsValidFloatChar(char)']

2 14 kj::_::(anonymousnamespace)::DelocalizeRadix(char*) call site /src/capnproto/c++/src/kj/string.c++:352
2 2 1 :

['strerror_r']

59 9503 kj::_::(anonymousnamespace)::makeDescriptionImpl(kj::_::(anonymousnamespace)::DescriptionStyle,charconst*,int,charconst*,charconst*,kj::ArrayPtr ) call site /src/capnproto/c++/src/kj/debug.c++:257
2 2 1 :

['kj::ArrayPtr ::ArrayPtr(decltype(nullptr))']

2 2 kj::getStackTrace(kj::ArrayPtr ,unsignedint) call site /src/capnproto/c++/src/kj/exception.c++:231
0 2 1 :

['kj::ArrayPtr ::size() const']

1428 2142 kj::_::rehash(kj::ArrayPtr ,unsignedlong) call site /src/capnproto/c++/src/kj/table.c++:162

Runtime coverage analysis

Covered functions
1664
Functions that are reachable but not covered
100
Reachable functions
609
Percentage of reachable functions covered
83.58%
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/capnproto/c++/src/capnp/llvm-fuzzer-testcase.c++ 2
/src/capnproto/c++/./src/kj/common.h 42
/src/capnproto/c++/src/kj/io.c++ 5
/src/capnproto/c++/src/kj/io.h 1
/src/capnproto/c++/./src/kj/io.h 2
/src/capnproto/c++/./src/kj/exception.h 2
/src/capnproto/c++/src/capnp/message.h 2
/src/capnproto/c++/src/capnp/serialize.c++ 1
/src/capnproto/c++/src/capnp/message.c++ 2
/src/capnproto/c++/./src/kj/array.h 22
/src/capnproto/c++/src/kj/exception.c++ 18
/src/capnproto/c++/./src/kj/debug.h 23
/src/capnproto/c++/src/kj/debug.h 3
/src/capnproto/c++/./src/kj/string.h 21
/src/capnproto/c++/src/kj/debug.c++ 5
/src/capnproto/c++/./src/kj/memory.h 2
/src/capnproto/c++/src/kj/common.h 25
/src/capnproto/c++/src/kj/memory.h 6
/src/capnproto/c++/src/kj/array.h 8
/src/capnproto/c++/src/kj/common.c++ 1
/src/capnproto/c++/src/kj/string.h 16
/src/capnproto/c++/src/kj/string.c++ 2
/src/capnproto/c++/src/kj/array.c++ 6
/src/capnproto/c++/src/capnp/endian.h 2
/src/capnproto/c++/src/capnp/arena.c++ 2
/src/capnproto/c++/./src/kj/mutex.h 1
/src/capnproto/c++/./src/kj/map.h 1
/src/capnproto/c++/./src/kj/table.h 2
/src/capnproto/c++/./src/kj/vector.h 1
/src/capnproto/c++/src/kj/mutex.c++ 1
/src/capnproto/c++/src/capnp/test-util.c++ 4
/src/capnproto/c++/./src/capnp/test.capnp.h 34
/src/capnproto/c++/src/capnp/common.h 23
/src/capnproto/c++/src/capnp/layout.h 21
/src/capnproto/c++/./src/kj/compat/gtest.h 4
/src/capnproto/c++/src/capnp/pointer-helpers.h 19
/src/capnproto/c++/src/capnp/layout.c++ 8
/src/capnproto/c++/src/capnp/arena.h 1
/src/capnproto/c++/src/capnp/test-util.h 16
/src/capnproto/c++/src/capnp/blob.h 2
/src/capnproto/c++/src/capnp/list.h 9
/src/capnproto/c++/src/capnp/schema.h 3
/src/capnproto/c++/./src/capnp/generated-header-support.h 1
/src/capnproto/c++/./src/kj/string-tree.h 1

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
capnp::_::initDynamicTestMessage(capnp::DynamicStruct::Builder) /src/capnproto/c++/src/capnp/test-util.c++ 1 ['class.capnp::DynamicStruct::Builder *'] 12 0 17 3 2 999 0 4723 3836
kj::_::waitImpl(kj::Own &&,kj::_::ExceptionOrValue&,kj::WaitScope&,kj::SourceLocation) /src/capnproto/c++/src/kj/async.c++ 4 ['class.kj::Own.19 *', 'class.kj::_::ExceptionOrValue *', 'class.kj::WaitScope *', 'class.kj::SourceLocation *'] 12 0 444 77 54 631 0 2432 1657
capnp::_::checkDynamicTestMessage(capnp::DynamicStruct::Builder) /src/capnproto/c++/src/capnp/test-util.c++ 1 ['class.capnp::DynamicStruct::Builder *'] 11 0 17 3 2 752 0 3489 1543
capnp::DynamicStruct::Builder::adopt(kj::StringPtr,capnp::Orphan &&) /src/capnproto/c++/src/capnp/dynamic.c++ 4 ['class.capnp::DynamicStruct::Builder *', 'char *', 'size_t ', 'class.capnp::Orphan *'] 11 0 40 3 2 955 0 4068 1313
capnp::_::checkDynamicTestMessage(capnp::DynamicStruct::Reader) /src/capnproto/c++/src/capnp/test-util.c++ 1 ['class.capnp::DynamicStruct::Reader *'] 17 0 17 3 2 734 0 3445 1092

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

Functions statically reachable by fuzzers
18.26%
2127/11647
Cyclomatic complexity statically reachable by fuzzers
20.59%
11472 / 55725

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
kj::stringifyStackTrace(kj::ArrayPtr ) 47 5 10.63% []
kj::_::Mutex::lock(kj::_::Mutex::Exclusivity,kj::Maybe >,kj::NoopSourceLocation) 63 19 30.15% []
kj::_::Mutex::unlock(kj::_::Mutex::Exclusivity,kj::_::Mutex::Waiter*) 46 19 41.30% []
kj::_::chooseBucket(unsignedint,unsignedint) 38 6 15.78% []

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/capnproto/c++/./src/kj/map.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/kj/mutex.h [] []
/src/capnproto/c++/src/capnp/llvm-fuzzer-testcase.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/async.c++ [] []
/src/capnproto/c++/./src/kj/array.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/refcount.h [] []
/src/capnproto/c++/src/kj/exception.h [] []
/src/capnproto/c++/src/kj/table.c++ [] []
/src/capnproto/c++/./src/kj/io.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/capnp/test-util.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/string-tree.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/capnp/message.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/async-inl.h [] []
/src/capnproto/c++/src/capnp/dynamic.c++ [] []
/src/capnproto/c++/src/kj/hash.c++ [] []
/src/capnproto/c++/src/kj/io.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/mutex.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/capnp/test.capnp.c++ [] []
/src/capnproto/c++/src/capnp/pointer-helpers.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/mutex.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/async-inl.h [] []
/src/capnproto/c++/src/kj/debug.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/async-prelude.h [] []
/src/capnproto/c++/src/kj/encoding.h [] []
/src/capnproto/c++/src/capnp/message.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/usr/local/bin/../include/c++/v1/exception [] []
/src/capnproto/c++/src/kj/array.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/async.h [] []
/src/capnproto/c++/src/kj/units.c++ [] []
/src/capnproto/c++/src/kj/async.h [] []
/src/capnproto/c++/src/kj/string.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/source-location.h [] []
/src/capnproto/c++/src/capnp/layout.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/common.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/endian.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/debug.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/hash.h [] []
/src/capnproto/c++/./src/kj/vector.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/./src/capnp/capability.h [] []
/src/capnproto/c++/src/kj/function.h [] []
/src/capnproto/c++/src/capnp/stringify.c++ [] []
/src/capnproto/c++/src/kj/string.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/orphan.h [] []
/src/capnproto/c++/src/kj/encoding.c++ [] []
/src/capnproto/c++/src/kj/io.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/kj/exception.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/serialize.h [] []
/src/capnproto/c++/src/capnp/capability.c++ [] []
/src/capnproto/c++/src/capnp/schema.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/serialize.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/compat/gtest.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/./src/kj/encoding.h [] []
/src/capnproto/c++/src/capnp/arena.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/vector.h [] []
/src/capnproto/c++/./src/kj/tuple.h [] []
/src/capnproto/c++/src/kj/source-location.c++ [] []
/src/capnproto/c++/./src/kj/common.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/one-of.h [] []
/src/capnproto/c++/./src/capnp/generated-header-support.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/./src/kj/async-prelude.h [] []
/src/capnproto/c++/src/capnp/blob.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/capability.h [] []
/src/capnproto/c++/./src/kj/memory.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/list.h [] []
/src/capnproto/c++/src/kj/table.h [] []
/src/capnproto/c++/./src/kj/exception.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/kj/list.c++ [] []
/src/capnproto/c++/./src/capnp/test.capnp.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/./src/kj/table.h ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/capnp/test-util.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/schema.c++ [] []
/src/capnproto/c++/src/capnp/layout.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/capnp/schema.capnp.h [] []
/src/capnproto/c++/src/capnp/arena.c++ ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/string-tree.h [] []
/src/capnproto/c++/./src/kj/string.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/./src/kj/debug.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/test.capnp.h [] []
/src/capnproto/c++/src/capnp/raw-schema.h [] []
/src/capnproto/c++/src/capnp/list.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/string-tree.c++ [] []
/src/capnproto/c++/./src/kj/units.h [] []
/src/capnproto/c++/src/capnp/any.c++ [] []
/src/capnproto/c++/src/kj/refcount.c++ [] []
/src/capnproto/c++/src/kj/common.c++ ['capnp-llvm-fuzzer-testcase'] []
/src/capnproto/c++/src/kj/units.h [] []
/src/capnproto/c++/src/capnp/common.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/array.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/kj/memory.h ['capnp-llvm-fuzzer-testcase'] ['capnp-llvm-fuzzer-testcase']
/src/capnproto/c++/src/capnp/dynamic.h [] []
/src/capnproto/c++/src/capnp/any.h [] []

Directories in report

Directory
/src/capnproto/c++/src/capnp/
/src/capnproto/c++/src/kj/
/src/capnproto/c++/./src/kj/compat/
/src/capnproto/c++/./src/kj/
/src/capnproto/c++/./src/capnp/
/usr/local/bin/../include/c++/v1/

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
capnp-llvm-fuzzer-testcase fuzzerLogFile-0-mzL01Bte0E.data fuzzerLogFile-0-mzL01Bte0E.data.yaml capnp-llvm-fuzzer-testcase.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. The caller source code file or class and the line number are shown in column 2 while column 1 is the function name of that selected functions or methods call. Each occurrent of the target function call will occuply a separate row. Column 3 of each row indicate if the target function calls is statically unreachable.Column 4 lists all fuzzers (or no fuzzers at all) that have covered that particular system call in dynamic fuzzing. Those functions with low to no reachability and dynamic hit count indicate missed fuzzing logic to fuzz and track for possible code injection sinks.

Function in each files in report

Target sink Callsite location Reached by fuzzer
popen Not in call tree []]