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 169466
Lines covered 80468
Code coverage 47.48%
Code coverage report Report link
Static reachability 45.22%
Fuzz Introspector report Report link (from 2025-03-27)
Fuzzer Code coverage (lines) Latest Report Comments
break_iterator_fuzzer 23.73% (avg: 23.73%, max: 23.73%) 2025-03-27
calendar_fuzzer 16.09% (avg: 16.09%, max: 16.09%) 2025-03-27
collator_compare_fuzzer 24.74% (avg: 24.74%, max: 24.75%) 2025-03-27
collator_rulebased_fuzzer 27.25% (avg: 27.24%, max: 27.28%) 2025-03-27
converter_fuzzer 16.22% (avg: 16.22%, max: 16.22%) 2025-03-27
date_format_fuzzer 16.06% (avg: 16.07%, max: 16.07%) 2025-03-27
date_time_pattern_generator_fuzzer 15.03% (avg: 15.02%, max: 15.03%) 2025-03-27
dtfmtsym_fuzzer 9.05% (avg: 9.05%, max: 9.06%) 2025-03-27
list_format_fuzzer 10.69% (avg: 10.68%, max: 10.69%) 2025-03-27
locale_fuzzer 17.51% (avg: 17.52%, max: 17.52%) 2025-03-27
locale_morph_fuzzer 36.46% (avg: 36.47%, max: 36.47%) 2025-03-27
message_formatter_fuzzer 13.18% (avg: 13.19%, max: 13.19%) 2025-03-27
normalizer2_fuzzer 12.99% (avg: 12.99%, max: 12.99%) 2025-03-27
number_format_fuzzer 15.17% (avg: 15.16%, max: 15.17%) 2025-03-27
number_formatter_fuzzer 19.66% (avg: 19.66%, max: 19.67%) 2025-03-27
plurrule_fuzzer 13.41% (avg: 13.4%, max: 13.41%) 2025-03-27
relative_date_time_formatter_fuzzer 12.04% (avg: 12.03%, max: 12.04%) 2025-03-27
rule_based_break_iterator_fuzzer 18.12% (avg: 18.12%, max: 18.12%) 2025-03-27
time_zone_names_fuzzer 8.71% (avg: 8.71%, max: 8.71%) 2025-03-27
timezone_create_fuzzer 4.56% (avg: 4.56%, max: 4.56%) 2025-03-27
ubidi_fuzzer 7.13% (avg: 7.13%, max: 7.13%) 2025-03-27
ucasemap_fuzzer 20.69% (avg: 20.69%, max: 20.69%) 2025-03-27
uloc_canonicalize_fuzzer 17.07% (avg: 17.08%, max: 17.08%) 2025-03-27
uloc_for_language_tag_fuzzer 12.73% (avg: 12.74%, max: 12.74%) 2025-03-27
uloc_get_name_fuzzer 16.99% (avg: 16.99%, max: 16.99%) 2025-03-27
uloc_is_right_to_left_fuzzer 25.31% (avg: 25.32%, max: 25.32%) 2025-03-27
uloc_open_keywords_fuzzer 14.82% (avg: 14.82%, max: 14.82%) 2025-03-27
unicode_string_codepage_create_fuzzer 9.16% (avg: 9.16%, max: 9.16%) 2025-03-27
unicodeset_fuzzer 13.75% (avg: 13.75%, max: 13.75%) 2025-03-27
uprop_fuzzer 16.6% (avg: 16.6%, max: 16.6%) 2025-03-27
uregex_match_fuzzer 26.11% (avg: 25.18%, max: 26.11%) 2025-03-27
uregex_open_fuzzer 17.09% (avg: 17.09%, max: 17.09%) 2025-03-27

Historical Progression

Per Fuzzer 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_78::message2::StandardFunctions::TextSelector::selectKey(icu_78::message2::FormattedPlaceholder&&,icu_78::message2::FunctionOptions&&,icu_78::UnicodeStringconst*,int,icu_78::UnicodeString*,int&,UErrorCode&)const /src/icu/icu4c/source/i18n/messageformat2_function_registry.cpp 27675 0.0%
icu_78::message2::formatWithDefaults(icu_78::Localeconst&,icu_78::message2::FormattedPlaceholderconst&,UErrorCode&) /src/icu/icu4c/source/i18n/messageformat2_formattable.cpp 27594 0.0%
icu_78::RuleBasedNumberFormat::format(long,icu_78::UnicodeStringconst&,icu_78::UnicodeString&,icu_78::FieldPosition&,UErrorCode&)const /src/icu/icu4c/source/i18n/rbnf.cpp 23714 0.0%
icu_78::message2::StandardFunctions::Number::format(icu_78::message2::FormattedPlaceholder&&,icu_78::message2::FunctionOptions&&,UErrorCode&)const /src/icu/icu4c/source/i18n/messageformat2_function_registry.cpp 23620 0.0%
icu_78::MessageFormat::PluralSelectorProvider::select(void*,double,UErrorCode&)const /src/icu/icu4c/source/i18n/msgfmt.cpp 23090 0.0%
icu_78::message2::StandardFunctions::DateTime::format(icu_78::message2::FormattedPlaceholder&&,icu_78::message2::FunctionOptions&&,UErrorCode&)const /src/icu/icu4c/source/i18n/messageformat2_function_registry.cpp 23087 0.0%
u_formatMessageWithError_78 /src/icu/icu4c/source/i18n/umsg.cpp 22352 0.0%
u_formatMessage_78 /src/icu/icu4c/source/i18n/umsg.cpp 22352 0.0%
u_vformatMessageWithError_78 /src/icu/icu4c/source/i18n/umsg.cpp 22350 0.0%
u_vformatMessage_78 /src/icu/icu4c/source/i18n/umsg.cpp 22350 0.0%