Project: icu

Language c++
OSS-Fuzz project link
Project repository link
Build status: Fuzzers succeeding: Build log
Build status: Code coverage succeeding: Build log
Build status: Fuzz Introspector succeeding: Build log
Fuzzer count 32
Lines of code 168796
Lines covered 75300
Code coverage 44.61%
Code coverage report Report link
Static reachability 45.20%
Fuzz Introspector report Report link (from 2025-01-24)

Historical progression

Functions of interest to fuzz

This section outlines functions that may be of interest to fuzz. They are based on ranking functions that have a lot of complexity but currently exhibit low code coverage. The complexity is calculated based on the function itself as well as the functions called by the given function, i.e. the tree of code that the function triggers.


This is only a minor amount of introspection information available for this project. Please consult the Fuzz Introspector report for more information, e.g. the introspection table of all functions in the target project available here.

Function name Function source file Accumulated cyclomatic complexity Code coverage
icu_77::message2::StandardFunctions::TextSelector::selectKey(icu_77::message2::FormattedPlaceholder&&,icu_77::message2::FunctionOptions&&,icu_77::UnicodeStringconst*,int,icu_77::UnicodeString*,int&,UErrorCode&)const /src/icu/icu4c/source/i18n/messageformat2_function_registry.cpp 27457 0.0%
icu_77::message2::formatWithDefaults(icu_77::Localeconst&,icu_77::message2::FormattedPlaceholderconst&,UErrorCode&) /src/icu/icu4c/source/i18n/messageformat2_formattable.cpp 27394 0.0%
icu_77::RuleBasedNumberFormat::format(long,icu_77::UnicodeStringconst&,icu_77::UnicodeString&,icu_77::FieldPosition&,UErrorCode&)const /src/icu/icu4c/source/i18n/rbnf.cpp 23518 0.0%
icu_77::message2::StandardFunctions::Number::format(icu_77::message2::FormattedPlaceholder&&,icu_77::message2::FunctionOptions&&,UErrorCode&)const /src/icu/icu4c/source/i18n/messageformat2_function_registry.cpp 23439 0.0%
icu_77::message2::StandardFunctions::DateTime::format(icu_77::message2::FormattedPlaceholder&&,icu_77::message2::FunctionOptions&&,UErrorCode&)const /src/icu/icu4c/source/i18n/messageformat2_function_registry.cpp 22996 0.0%
icu_77::MessageFormat::PluralSelectorProvider::select(void*,double,UErrorCode&)const /src/icu/icu4c/source/i18n/msgfmt.cpp 22894 0.0%
icu_77::MessageFormat::format(int,voidconst*,icu_77::Formattableconst*,icu_77::UnicodeStringconst*,int,icu_77::AppendableWrapper&,icu_77::FieldPosition*,UErrorCode&)const /src/icu/icu4c/source/i18n/msgfmt.cpp 22298 0.0%
u_formatMessageWithError_77 /src/icu/icu4c/source/i18n/umsg.cpp 22238 0.0%
u_formatMessage_77 /src/icu/icu4c/source/i18n/umsg.cpp 22238 0.0%
u_vformatMessageWithError_77 /src/icu/icu4c/source/i18n/umsg.cpp 22236 0.0%