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

Table of contents

Project overview: libsass
High level conclusions
Reachability and coverage overview
Fuzzers overview
Project functions overview
Fuzzer details
Fuzzer: data_context_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: 2023-06-07

Project overview: libsass

High level conclusions

Reachability and coverage overview

Functions statically reachable by fuzzers
2.0%
170 / 7006
Cyclomatic complexity statically reachable by fuzzers
2.0%
1054 / 45560
Runtime code coverage of functions
36.0%
2504 / 7006

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
data_context_fuzzer /src/data_context_fuzzer.cc 360 6868 11 32 2053 1121 data_context_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: data_context_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 0 177 42.9%
gold [1:9] 11 2.66%
yellow [10:29] 128 31.0%
greenyellow [30:49] 14 3.39%
lawngreen 50+ 82 19.9%
All colors 412 100

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
996 996 1 :

['char const* Sass::Prelexer::sequence<&Sass::Prelexer::optional_spaces, &(char const* Sass::Prelexer::optional<&Sass::Prelexer::re_selector_list>(char const*)), &Sass::Prelexer::optional_spaces, &(char const* Sass::Prelexer::exactly<(char)41>(char const*))>(char const*)']

996 996 charconst*Sass::Prelexer::sequence<&(charconst*Sass::Prelexer::exactly<(char)40>(charconst*)),&Sass::Prelexer::optional_spaces,&(charconst*Sass::Prelexer::optional<&Sass::Prelexer::re_selector_list>(charconst*)),&Sass::Prelexer::optional_spaces,&(charconst*Sass::Prelexer::exactly<(char)41>(charconst*))>(charconst*) call site: 00000 /src/libsass/src/lexer.hpp:216
662 668 5 :

['Sass::CssMediaQuery::type(std::__1::basic_string , std::__1::allocator >)', 'std::__1::basic_string , std::__1::allocator >::basic_string(std::__1::basic_string , std::__1::allocator > const&)', 'Sass::Util::equalsLiteral(char const*, std::__1::basic_string , std::__1::allocator > const&)', 'Sass::Parser::parseIdentifier()', 'Sass::CssMediaQuery::modifier(std::__1::basic_string , std::__1::allocator >)']

690 1766 Sass::Parser::parseCssMediaQuery() call site: 00000 /src/libsass/src/parser.cpp:2144
661 661 1 :

['_ZN4Sass8Prelexer8sequenceIXadL_ZNS0_7exactlyILc58EEEPKcS4_EEXadL_ZNS0_12alternativesIXadL_ZNS0_17identifier_schemaES4_EEXadL_ZNS0_10identifierES4_EEJEEES4_S4_EEJXadL_ZNS0_9zero_plusIXadL_ZNS1_IXadL_ZNS2_ILc46EEES4_S4_EEXadL_ZNS5_IXadL_ZNS0_17identifier_schemaES4_EEXadL_ZNS0_10identifierES4_EEJEEES4_S4_EEJEEES4_S4_EEEES4_S4_EEXadL_ZNS6_IXadL_ZNS1_IXadL_ZNS2_ILc40EEES4_S4_EEXadL_ZNS0_23optional_css_whitespaceES4_EEJXadL_ZNS0_8optionalIXadL_ZNS1_IXadL_ZNS5_IXadL_ZNS0_8variableES4_EEXadL_ZNS0_17identifier_schemaES4_EEJXadL_ZNS0_10identifierES4_EEEEES4_S4_EEXadL_ZNS0_23optional_css_whitespaceES4_EEJXadL_ZNS2_ILc61EEES4_S4_EEXadL_ZNS0_23optional_css_whitespaceES4_EEXadL_ZNS5_IXadL_ZNS0_8variableES4_EEXadL_ZNS0_17identifier_schemaES4_EEJXadL_ZNS0_10identifierES4_EEXadL_ZNS0_13quoted_stringES4_EEXadL_ZNS0_6numberES4_EEXadL_ZNS0_3hexES4_EEXadL_ZNS0_4hexaES4_EEEEES4_S4_EEXadL_ZNS6_IXadL_ZNS1_IXadL_ZNS0_23optional_css_whitespaceES4_EEXadL_ZNS2_ILc44EEES4_S4_EEJXadL_ZNS0_23optional_css_whitespaceES4_EEXadL_ZNS1_IXadL_ZNS5_IXadL_ZNS0_8variableES4_EEXadL_ZNS0_17identifier_schemaES4_EEJXadL_ZNS0_10identifierES4_EEEEES4_S4_EEXadL_ZNS0_23optional_css_whitespaceES4_EEJXadL_ZNS2_ILc61EEES4_S4_EEXadL_ZNS0_23optional_css_whitespaceES4_EEXadL_ZNS5_IXadL_ZNS0_8variableES4_EEXadL_ZNS0_17identifier_schemaES4_EEJXadL_ZNS0_10identifierES4_EEXadL_ZNS0_13quoted_stringES4_EEXadL_ZNS0_6numberES4_EEXadL_ZNS0_3hexES4_EEXadL_ZNS0_4hexaES4_EEEEES4_S4_EEEEES4_S4_EEEEES4_S4_EEEES4_S4_EEEEES4_S4_EEEES4_S4_EEXadL_ZNS0_23optional_css_whitespaceES4_EEXadL_ZNS2_ILc41EEES4_S4_EEEEES4_S4_EEEES4_S4_EEEEES4_S4_']

661 661 _ZN4Sass8Prelexer8sequenceIXadL_ZNS0_4wordIXadsoKcL_ZNS_9Constants10progid_kwdEEEEEEPS3_S5_EEXadL_ZNS0_7exactlyILc58EEES5_S5_EEJXadL_ZNS0_12alternativesIXadL_ZNS0_17identifier_schemaES5_EEXadL_ZNS0_10identifierES5_EEJEEES5_S5_EEXadL_ZNS0_9zero_plusIXadL_ZNS1_IXadL_ZNS6_ILc46EEES5_S5_EEXadL_ZNS7_IXadL_ZNS0_17identifier_schemaES5_EEXadL_ZNS0_10identifierES5_EEJEEES5_S5_EEJEEES5_S5_EEEES5_S5_EEXadL_ZNS8_IXadL_ZNS1_IXadL_ZNS6_ILc40EEES5_S5_EEXadL_ZNS0_23optional_css_whitespaceES5_EEJXadL_ZNS0_8optionalIXadL_ZNS1_IXadL_ZNS7_IXadL_ZNS0_8variableES5_EEXadL_ZNS0_17identifier_schemaES5_EEJXadL_ZNS0_10identifierES5_EEEEES5_S5_EEXadL_ZNS0_23optional_css_whitespaceES5_EEJXadL_ZNS6_ILc61EEES5_S5_EEXadL_ZNS0_23optional_css_whitespaceES5_EEXadL_ZNS7_IXadL_ZNS0_8variableES5_EEXadL_ZNS0_17identifier_schemaES5_EEJXadL_ZNS0_10identifierES5_EEXadL_ZNS0_13quoted_stringES5_EEXadL_ZNS0_6numberES5_EEXadL_ZNS0_3hexES5_EEXadL_ZNS0_4hexaES5_EEEEES5_S5_EEXadL_ZNS8_IXadL_ZNS1_IXadL_ZNS0_23optional_css_whitespaceES5_EEXadL_ZNS6_ILc44EEES5_S5_EEJXadL_ZNS0_23optional_css_whitespaceES5_EEXadL_ZNS1_IXadL_ZNS7_IXadL_ZNS0_8variableES5_EEXadL_ZNS0_17identifier_schemaES5_EEJXadL_ZNS0_10identifierES5_EEEEES5_S5_EEXadL_ZNS0_23optional_css_whitespaceES5_EEJXadL_ZNS6_ILc61EEES5_S5_EEXadL_ZNS0_23optional_css_whitespaceES5_EEXadL_ZNS7_IXadL_ZNS0_8variableES5_EEXadL_ZNS0_17identifier_schemaES5_EEJXadL_ZNS0_10identifierES5_EEXadL_ZNS0_13quoted_stringES5_EEXadL_ZNS0_6numberES5_EEXadL_ZNS0_3hexES5_EEXadL_ZNS0_4hexaES5_EEEEES5_S5_EEEEES5_S5_EEEEES5_S5_EEEES5_S5_EEEEES5_S5_EEEES5_S5_EEXadL_ZNS0_23optional_css_whitespaceES5_EEXadL_ZNS6_ILc41EEES5_S5_EEEEES5_S5_EEEES5_S5_EEEEES5_S5_ call site: 00000 /src/libsass/src/lexer.hpp:216
383 392 4 :

['std::__1::basic_string , std::__1::allocator >::~basic_string()', 'sass_copy_c_string', 'Sass::Emitter::render_srcmap(Sass::Context&)', 'std::__1::basic_string , std::__1::allocator >::c_str() const']

383 392 Sass::Context::render_srcmap() call site: 00000 /src/libsass/src/context.cpp:696
342 342 1 :

['_ZN4Sass8Prelexer8sequenceIXadL_ZNS0_7exactlyILc114EEEPKcS4_EEXadL_ZNS2_ILc108EEES4_S4_EEJXadL_ZNS2_ILc40EEES4_S4_EEXadL_ZNS0_1WES4_EEXadL_ZNS0_12alternativesIXadL_ZNS0_13quoted_stringES4_EEXadL_ZNS0_10non_greedyIXadL_ZNS5_IXadL_ZNS0_10class_charIXadsoS3_L_ZNS_9Constants14real_uri_charsEEEEEES4_S4_EEXadL_ZNS0_13uri_characterES4_EEJXadL_ZNS0_8NONASCIIES4_EEXadL_ZNS0_6ESCAPEES4_EEEEES4_S4_EEXadL_ZNS5_IXadL_ZNS1_IXadL_ZNS0_1WES4_EEXadL_ZNS2_ILc41EEES4_S4_EEJEEES4_S4_EEXadL_ZNS0_7exactlyIXadsoS3_L_ZNS8_11hash_lbraceEEEEEES4_S4_EEJEEES4_S4_EEEES4_S4_EEJEEES4_S4_EEEEES4_S4_']

342 342 _ZN4Sass8Prelexer8sequenceIXadL_ZNS0_7exactlyILc117EEEPKcS4_EEXadL_ZNS2_ILc114EEES4_S4_EEJXadL_ZNS2_ILc108EEES4_S4_EEXadL_ZNS2_ILc40EEES4_S4_EEXadL_ZNS0_1WES4_EEXadL_ZNS0_12alternativesIXadL_ZNS0_13quoted_stringES4_EEXadL_ZNS0_10non_greedyIXadL_ZNS5_IXadL_ZNS0_10class_charIXadsoS3_L_ZNS_9Constants14real_uri_charsEEEEEES4_S4_EEXadL_ZNS0_13uri_characterES4_EEJXadL_ZNS0_8NONASCIIES4_EEXadL_ZNS0_6ESCAPEES4_EEEEES4_S4_EEXadL_ZNS5_IXadL_ZNS1_IXadL_ZNS0_1WES4_EEXadL_ZNS2_ILc41EEES4_S4_EEJEEES4_S4_EEXadL_ZNS0_7exactlyIXadsoS3_L_ZNS8_11hash_lbraceEEEEEES4_S4_EEJEEES4_S4_EEEES4_S4_EEJEEES4_S4_EEEEES4_S4_ call site: 00000 /src/libsass/src/lexer.hpp:216
302 536 54 :

['Sass::SelectorComponent::wrapInComplex()', 'Sass::SharedImpl ::SharedImpl (Sass::CompoundSelector*)', 'Sass::SimpleSelector::name(std::__1::basic_string , std::__1::allocator >)', 'Sass::Vectorized >::elements()', 'Sass::SharedImpl ::operator Sass::SelectorList*() const', 'std::__1::vector >::vector(std::__1::vector > const&)', 'std::__1::basic_string , std::__1::allocator >::~basic_string()', 'std::__1::vector , std::__1::allocator > >::back()', 'Sass::Vectorized >::begin()', 'Sass::SharedImpl ::SharedImpl(Sass::SharedImpl const&)', '__cxa_throw', 'std::__1::__wrap_iter *>::operator*() const', 'std::__1::vector , std::__1::allocator > >::end()', 'Sass::SharedImpl & Sass::SharedImpl ::operator= (Sass::ComplexSelector*)', 'Sass::CompoundSelector::copy() const', '_ZNSt3__111__wrap_iterIPKN4Sass10SharedImplINS1_14SimpleSelectorEEEEC2IPS4_EERKNS0_IT_EEPNS_9enable_ifIXsr14is_convertibleISA_S6_EE5valueEvE4typeE', 'Sass::SharedImpl ::operator->() const', 'Sass::SharedImpl ::operator->() const', 'Sass::Vectorized >::first()', 'Sass::SharedImpl & Sass::SharedImpl ::operator= (Sass::SharedImpl const&)', 'Sass::SharedImpl ::operator->() const', 'std::__1::basic_string , std::__1::allocator >::basic_string(std::__1::basic_string , std::__1::allocator > const&)', 'std::__1::__wrap_iter *>::operator++()', 'Sass::SharedImpl ::SharedImpl(Sass::SharedImpl const&)', 'std::__1::vector , std::__1::allocator > >::push_back(Sass::SharedImpl const&)', 'Sass::Exception::InvalidParent::InvalidParent(Sass::Selector*, std::__1::vector >, Sass::Selector*)', 'Sass::SimpleSelector* Sass::Cast (Sass::AST_Node*)', 'Sass::SharedImpl ::operator Sass::SimpleSelector*() const', 'Sass::SharedPtr::operator bool() const', 'Sass::SharedImpl ::operator Sass::SelectorComponent*() const', 'Sass::TypeSelector* Sass::Cast (Sass::AST_Node*)', 'Sass::Vectorized >::end()', 'Sass::CompoundSelector* Sass::Cast (Sass::AST_Node*)', 'std::__1::basic_string , std::__1::allocator >::operator+=(std::__1::basic_string , std::__1::allocator > const&)', 'std::__1::vector , std::__1::allocator > >::begin()', 'Sass::SharedPtr::isNull() const', 'Sass::Vectorized >::concat(Sass::Vectorized > const*)', 'Sass::Vectorized >::last()', 'std::__1::vector >::~vector()', 'Sass::Vectorized >::last()', 'std::__1::__wrap_iter *>::operator+(long) const', 'Sass::Vectorized >::elements()', 'Sass::Vectorized >::length() const', 'Sass::SimpleSelector::name() const', '_ZNSt3__16vectorIN4Sass10SharedImplINS1_14SimpleSelectorEEENS_9allocatorIS4_EEE6insertINS_11__wrap_iterIPS4_EEEENS_9enable_ifIXaasr27__is_cpp17_forward_iteratorIT_EE5valuesr16is_constructibleIS4_NS_15iterator_traitsISD_E9referenceEEE5valueESB_E4typeENS9_IPKS4_EESD_SD_', '__cxa_free_exception', 'Sass::Vectorized >::elements()', 'Sass::SharedImpl & Sass::SharedImpl ::operator= (Sass::SimpleSelector*)', 'std::__1::vector , std::__1::allocator > >::back()', '__cxa_allocate_exception', 'Sass::SharedImpl & Sass::SharedImpl ::operator= (Sass::CompoundSelector*)', 'std::__1::vector , std::__1::allocator > >::vector(std::initializer_list >)', 'Sass::ComplexSelector::copy() const', 'bool std::__1::operator!= *>(std::__1::__wrap_iter *> const&, std::__1::__wrap_iter *> const&)']

302 663 Sass::CompoundSelector::resolve_parent_refs(std::__1::vector ,std::__1::allocator >>,std::__1::vector >&,bool) call site: 00000 /src/libsass/src/ast_selectors.cpp:880
301 311 4 :

['Sass::Operators::op_colors(Sass_OP, Sass::Color_RGBA const&, Sass::Color_RGBA const&, Sass_Inspect_Options, Sass::SourceSpan const&, bool)', 'Sass::Color* Sass::Cast (Sass::AST_Node*)', 'Sass::SharedImpl ::operator*() const', 'Sass::SharedImpl ::SharedImpl (Sass::Color_RGBA*)']

429 706 Sass::Eval::operator()(Sass::Binary_Expression*) call site: 00000 /src/libsass/src/eval.cpp:841
295 495 19 :

['Sass::Number::reduce()', '_ZNSt3__16vectorINS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEENS4_IS6_EEE6insertINS_11__wrap_iterIPKS6_EEEENS_9enable_ifIXaasr27__is_cpp17_forward_iteratorIT_EE5valuesr16is_constructibleIS6_NS_15iterator_traitsISF_E9referenceEEE5valueENSA_IPS6_EEE4typeESD_SF_SF_', 'Sass::AST_Node::pstate(Sass::SourceSpan)', 'Sass::SharedImpl ::detach()', 'std::__1::vector , std::__1::allocator >, std::__1::allocator , std::__1::allocator > > >::begin() const', 'Sass::SharedPtr::~SharedPtr()', 'std::__1::vector , std::__1::allocator >, std::__1::allocator , std::__1::allocator > > >::operator=(std::__1::vector , std::__1::allocator >, std::__1::allocator , std::__1::allocator > > > const&)', 'Sass::SourceSpan::~SourceSpan()', 'Sass::SharedImpl ::operator->() const', 'std::__1::vector , std::__1::allocator >, std::__1::allocator , std::__1::allocator > > >::end() const', 'Sass::Units::convert_factor(Sass::Units const&) const', 'Sass::Units::is_unitless() const', 'std::__1::vector , std::__1::allocator >, std::__1::allocator , std::__1::allocator > > >::end()', 'Sass::Number::Number(Sass::Number const&)', 'Sass::Number::value() const', 'Sass::SourceSpan::SourceSpan(Sass::SourceSpan const&)', 'Sass::SharedImpl ::SharedImpl (Sass::Number*)', 'Sass::Number::~Number()', '_ZNSt3__111__wrap_iterIPKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEEC2IPS6_EERKNS0_IT_EEPNS_9enable_ifIXsr14is_convertibleISC_S8_EE5valueEvE4typeE']

295 547 Sass::Operators::op_numbers(Sass_OP,Sass::Numberconst&,Sass::Numberconst&,Sass_Inspect_Options,Sass::SourceSpanconst&,bool) call site: 00000 /src/libsass/src/operators.cpp:167
267 267 1 :

['char const* Sass::Prelexer::sequence<&Sass::Prelexer::re_reference_combinator, &(char const* Sass::Prelexer::exactly<(char)47>(char const*))>(char const*)']

267 267 charconst*Sass::Prelexer::sequence<&(charconst*Sass::Prelexer::exactly<(char)47>(charconst*)),&Sass::Prelexer::re_reference_combinator,&(charconst*Sass::Prelexer::exactly<(char)47>(charconst*))>(charconst*) call site: 00000 /src/libsass/src/lexer.hpp:216
250 254 2 :

['Sass::Operators::op_color_number(Sass_OP, Sass::Color_RGBA const&, Sass::Number const&, Sass_Inspect_Options, Sass::SourceSpan const&, bool)', 'Sass::Number* Sass::Cast (Sass::AST_Node*)']

388 650 Sass::Eval::operator()(Sass::Binary_Expression*) call site: 00000 /src/libsass/src/eval.cpp:836
229 255 20 :

['std::__1::pair &>::type, std::__1::__unwrap_ref_decay &>::type> std::__1::make_pair &, Sass::SharedImpl &>(Sass::SharedImpl &, Sass::SharedImpl &)', 'std::__1::vector >::vector(std::__1::vector > const&)', 'std::__1::basic_string , std::__1::allocator >::~basic_string()', 'Sass::SharedImpl ::operator->() const', '__cxa_throw', 'std::__1::basic_string , std::__1::allocator >::basic_string (char const*)', 'std::__1::vector >::push_back(Sass::Backtrace&&)', 'Sass::Map::Map(Sass::SourceSpan, unsigned long)', 'Sass::SharedImpl ::SharedImpl (Sass::Map*)', 'Sass::SharedImpl ::operator*() const', 'Sass::Exception::DuplicateKeyError::DuplicateKeyError(std::__1::vector >, Sass::Map const&, Sass::Expression const&)', 'Sass::Backtrace::Backtrace(Sass::SourceSpan, std::__1::basic_string , std::__1::allocator >)', 'Sass::Backtrace::~Backtrace()', 'Sass::Expression::is_delayed(bool)', 'std::__1::pair , Sass::SharedImpl >::~pair()', 'std::__1::vector >::~vector()', 'Sass::Hashed , Sass::SharedImpl , Sass::SharedImpl >::operator<<(std::__1::pair , Sass::SharedImpl >)', '__cxa_free_exception', '__cxa_allocate_exception', 'Sass::Hashed , Sass::SharedImpl , Sass::SharedImpl >::has_duplicate_key() const']

274 402 Sass::Eval::operator()(Sass::List*) call site: 00000 /src/libsass/src/eval.cpp:484
194 194 1 :

['char const* Sass::Prelexer::sequence<&(char const* Sass::Prelexer::optional<&Sass::Prelexer::quoted_string>(char const*))>(char const*)']

194 194 charconst*Sass::Prelexer::sequence<&Sass::Prelexer::interpolant,&(charconst*Sass::Prelexer::optional<&Sass::Prelexer::quoted_string>(charconst*))>(charconst*) call site: 00000 /src/libsass/src/lexer.hpp:216

Runtime coverage analysis

Covered functions
2505
Functions that are reachable but not covered
108
Reachable functions
360
Percentage of reachable functions covered
70.0%
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/data_context_fuzzer.cc 1
/src/libsass/src/sass_context.cpp 23
/src/libsass/src/file.cpp 3
/src/libsass/src/error_handling.hpp 1
/src/libsass/src/json.cpp 33
/src/libsass/src/utf8/checked.h 12
/usr/local/bin/../include/c++/v1/exception 1
/src/libsass/src/sass.cpp 5
/src/libsass/src/position.hpp 4
/src/libsass/src/memory/shared_ptr.hpp 14
/src/libsass/src/util_string.hpp 2
/src/libsass/src/backtrace.cpp 1
/src/libsass/src/utf8/core.h 14
/src/libsass/src/util.cpp 3
/src/libsass/src/sass_functions.cpp 4
/src/libsass/src/context.hpp 1
/src/libsass/src/context.cpp 12
/src/libsass/src/plugins.cpp 5
/src/libsass/src/output.cpp 2
/src/libsass/src/emitter.cpp 2
/src/libsass/src/source_map.hpp 4
/src/libsass/src/source_map.cpp 1
/src/libsass/src/position.cpp 2
/src/libsass/src/inspect.cpp 2
/src/libsass/src/operation.hpp 3
/src/libsass/src/emitter.hpp 2
/src/libsass/src/extender.cpp 1
/src/libsass/src/ordered_map.hpp 2
/src/libsass/src/prelexer.hpp 1
/src/libsass/src/plugins.hpp 3
/src/libsass/src/util.hpp 2
/src/libsass/src/extender.hpp 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
Sass::Context::compile() /src/libsass/src/context.cpp 2 ['class.Sass::SharedImpl *', 'class.Sass::Context *'] 45 0 359 80 62 3888 0 16271 16032
Sass::Parser::parse_block_node(bool) /src/libsass/src/parser.cpp 2 ['class.Sass::Parser *', 'N/A'] 46 0 1730 384 297 3787 27 12836 5470
Sass::Eval::operator()(Sass::Binary_Expression*) /src/libsass/src/eval.cpp 2 ['class.Sass::Eval *', 'class.Sass::Binary_Expression *'] 7 0 4778 1007 811 707 0 2489 1362
Sass::Eval::operator()(Sass::Function_Call*) /src/libsass/src/eval.cpp 2 ['class.Sass::Eval *', 'class.Sass::Function_Call *'] 8 0 2589 554 402 646 0 2126 1315
Sass::Expand::operator()(Sass::MediaRule*) /src/libsass/src/expand.cpp 2 ['class.Sass::Expand *', 'class.Sass::WhileRule *'] 6 0 338 63 45 521 0 1216 498
Sass::Cssize::operator()(Sass::AtRule*) /src/libsass/src/cssize.cpp 2 ['class.Sass::Cssize *', 'class.Sass::Mixin_Call *'] 5 0 928 193 168 157 0 633 491
Sass::Expand::operator()(Sass::ExtendRule*) /src/libsass/src/expand.cpp 2 ['class.Sass::Expand *', 'class.Sass::ExtendRule *'] 27 0 547 101 84 2990 0 10005 382

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

Functions statically reachable by fuzzers
43.0%
3006 / 7006
Cyclomatic complexity statically reachable by fuzzers
57.9%
26283 / 45560

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
Sass::Arguments::adjust_after_pushing(Sass::SharedImpl ) 31 13 41.93% []
Sass::CompoundSelector::resolve_parent_refs(std::__1::vector ,std::__1::allocator >>,std::__1::vector >&,bool) 64 16 25.0% []
Sass::CheckNesting::visit_children(Sass::Statement*) 62 24 38.70% []
Sass::Context::call_loader(std::__1::basic_string ,std::__1::allocator >const&,charconst*,Sass::SourceSpan&,Sass::Import*,std::__1::vector >,bool) 46 6 13.04% []
Sass::Eval::operator()(Sass::List*) 34 17 50.0% []
Sass::Eval::operator()(Sass::Binary_Expression*) 294 102 34.69% []
Sass::Eval::operator()(Sass::Function_Call*) 150 27 18.0% []
Sass::Expand::operator()(Sass::Assignment*) 65 10 15.38% []
Sass::Inspect::operator()(Sass::Color_RGBA*) 64 29 45.31% []
parse_number(charconst**,double*) 36 16 44.44% ['data_context_fuzzer']
Sass::Operators::op_strings(Sass::Operand,Sass::Value&,Sass::Value&,Sass_Inspect_Options,Sass::SourceSpanconst&,bool) 36 16 44.44% []
Sass::Operators::op_numbers(Sass_OP,Sass::Numberconst&,Sass::Numberconst&,Sass_Inspect_Options,Sass::SourceSpanconst&,bool) 59 21 35.59% []
Sass::Output::operator()(Sass::StyleRule*) 57 30 52.63% []
Sass::Parser::parse_pseudo_selector() 61 30 49.18% []
Sass::Parser::parseCssMediaQuery() 50 20 40.0% []
Sass::Parser::read_bom() 56 10 17.85% []
Sass::Util::isPrintable(Sass::StyleRule*,Sass_Output_Style) 39 16 41.02% []
Sass::Util::isPrintable(Sass::CssMediaRule*,Sass_Output_Style) 37 17 45.94% []

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/libsass/src/output.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/usr/local/bin/../include/c++/v1/iosfwd [] []
/src/libsass/src/cssize.cpp [] []
/src/libsass/src/listize.hpp [] []
/src/libsass/src/values.cpp [] []
/src/libsass/src/backtrace.hpp [] []
/src/libsass/src/check_nesting.hpp [] []
/src/libsass/src/expand.cpp [] []
/src/libsass/src/cencode.c [] []
/src/libsass/src/file.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ordered_map.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/usr/local/bin/../include/c++/v1/exception ['data_context_fuzzer'] []
/src/libsass/src/lexer.cpp [] []
/src/libsass/src/ast_values.hpp [] []
/usr/local/bin/../include/c++/v1/istream [] []
/src/libsass/src/ast_selectors.hpp [] []
/src/libsass/src/fn_utils.hpp [] []
/src/libsass/src/fn_lists.cpp [] []
/src/libsass/src/util_string.cpp [] []
/src/libsass/src/dart_helpers.hpp [] []
/src/libsass/src/ast_sel_cmp.cpp [] []
/src/libsass/src/fn_numbers.cpp [] []
/src/libsass/src/operators.cpp [] []
/src/libsass/src/parser.hpp [] []
/src/libsass/src/inspect.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ast_sel_unify.cpp [] []
/src/libsass/src/prelexer.cpp [] []
/src/libsass/src/utf8/core.h ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/utf8/checked.h ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/extender.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/source_data.hpp [] []
/src/libsass/src/sass_values.cpp [] []
/src/libsass/src/eval.cpp [] []
/src/libsass/src/extender.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/stylesheet.cpp [] []
/src/libsass/src/remove_placeholders.cpp [] []
/src/libsass/src/util_string.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/sass_functions.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/cssize.hpp [] []
/src/libsass/src/units.hpp [] []
/src/libsass/src/util.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/context.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ast_supports.cpp [] []
/usr/include/ctype.h [] []
/src/libsass/src/ast_helpers.hpp [] []
/src/libsass/src/sass2scss.cpp [] []
/src/libsass/src/ast_values.cpp [] []
/src/libsass/src/c2ast.cpp [] []
/src/libsass/src/ast2c.cpp [] []
/src/libsass/src/parser.cpp [] []
/src/libsass/src/to_value.hpp [] []
/src/libsass/src/operation.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/utf8_string.cpp [] []
/src/libsass/src/color_maps.cpp [] []
/src/libsass/src/check_nesting.cpp [] []
/src/libsass/src/emitter.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ast_supports.hpp [] []
/src/libsass/src/source_map.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/sass_context.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ast2c.hpp [] []
/src/libsass/src/context.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/base64vlq.cpp [] []
/src/libsass/src/listize.cpp [] []
/src/libsass/src/backtrace.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/plugins.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/bind.cpp [] []
/usr/local/bin/../include/c++/v1/stdlib.h [] []
/src/libsass/src/ast.hpp [] []
/usr/local/bin/../include/c++/v1/math.h [] []
/src/data_context_fuzzer.cc ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ast_selectors.cpp [] []
/src/libsass/src/ast_sel_super.cpp [] []
/src/libsass/src/environment.hpp [] []
/src/libsass/src/util.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/eval.hpp [] []
/src/libsass/src/prelexer.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ast_def_macros.hpp [] []
/src/libsass/src/sass.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/file.hpp [] []
/src/libsass/src/error_handling.cpp [] []
/src/libsass/src/to_value.cpp [] []
/src/libsass/src/remove_placeholders.hpp [] []
/src/libsass/src/position.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/emitter.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/b64/encode.h [] []
/src/libsass/src/fn_colors.cpp [] []
/src/libsass/src/mapping.hpp [] []
/src/libsass/src/error_handling.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/plugins.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/units.cpp [] []
/src/libsass/src/memory/../sass.hpp [] []
/src/libsass/src/environment.cpp [] []
/src/libsass/src/json.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/ast_fwd_decl.cpp [] []
/src/libsass/include/sass2scss.h [] []
/src/libsass/src/fn_selectors.cpp [] []
/src/libsass/src/memory/shared_ptr.hpp ['data_context_fuzzer'] ['data_context_fuzzer']
/usr/local/bin/../include/c++/v1/initializer_list [] []
/src/libsass/src/fn_strings.cpp [] []
/src/libsass/src/extension.hpp [] []
/src/libsass/src/fn_maps.cpp [] []
/src/libsass/src/permutate.hpp [] []
/src/libsass/src/lexer.hpp [] []
/src/libsass/src/parser_selectors.cpp [] []
/src/libsass/src/fn_utils.cpp [] []
/src/libsass/src/source.hpp [] []
/src/libsass/src/extension.cpp [] []
/src/libsass/src/ast_sel_weave.cpp [] []
/src/libsass/src/position.cpp ['data_context_fuzzer'] ['data_context_fuzzer']
/src/libsass/src/expand.hpp [] []
/usr/local/bin/../include/c++/v1/stdexcept [] []
/src/libsass/src/source.cpp [] []
/usr/include/x86_64-linux-gnu/sys/stat.h [] []
/src/libsass/src/fn_miscs.cpp [] []
/src/libsass/src/eval_selectors.cpp [] []
/src/libsass/src/ast.cpp [] []
/src/libsass/src/stylesheet.hpp [] []
/src/libsass/src/source_map.cpp ['data_context_fuzzer'] ['data_context_fuzzer']

Directories in report

Directory
/src/
/src/libsass/src/
/src/libsass/src/memory/../
/src/libsass/include/
/usr/include/x86_64-linux-gnu/sys/
/src/libsass/src/memory/
/usr/include/
/src/libsass/src/utf8/
/usr/local/bin/../include/c++/v1/
/src/libsass/src/b64/

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
data_context_fuzzer fuzzerLogFile-0-ThuwBgTvGB.data fuzzerLogFile-0-ThuwBgTvGB.data.yaml data_context_fuzzer.covreport