Project: flac

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 9
Lines of code 34573
Lines covered 30288
Code coverage 87.61%
Code coverage report Report link
Static reachability 87.12%
Fuzz Introspector report Report link (from 2025-03-27)
Fuzzer Code coverage (lines) Latest Report Comments
fuzzer_decoder 38.62% (avg: 38.61%, max: 38.62%) 2025-03-27
fuzzer_encoder 56.18% (avg: 56.18%, max: 56.2%) 2025-03-27
fuzzer_encoder_v2 67.68% (avg: 67.67%, max: 67.71%) 2025-03-27
fuzzer_exo 42.91% (avg: 42.91%, max: 42.91%) 2025-03-27
fuzzer_metadata 45.71% (avg: 45.71%, max: 45.71%) 2025-03-27
fuzzer_reencoder 61.81% (avg: 61.81%, max: 61.84%) 2025-03-27
fuzzer_seek 71.09% (avg: 71.11%, max: 71.18%) 2025-03-27
fuzzer_tool_flac 68.98% (avg: 68.54%, max: 68.92%) 2025-03-27
fuzzer_tool_metaflac 58.57% (avg: 58.64%, max: 58.95%) 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
main_to_fuzz /src/flac/oss-fuzz/./../src/metaflac/main.c 3765 0.0%
grabbag__replaygain_store_to_file_title /src/flac/src/share/grabbag/replaygain.c 1384 0.0%
FLAC::Decoder::Stream::find_total_samples() /src/flac/src/libFLAC++/stream_decoder.cpp 1039 0.0%
FLAC::Decoder::Stream::skip_single_link() /src/flac/src/libFLAC++/stream_decoder.cpp 997 0.0%
FLAC::Metadata::Chain::read(void*,FLAC__IOCallbacks,bool) /src/flac/src/libFLAC++/metadata.cpp 988 0.0%
FLAC__metadata_chain_read_ogg_with_callbacks /src/flac/src/libFLAC/metadata_iterators.c 981 0.0%
FLAC__metadata_chain_read_with_callbacks /src/flac/src/libFLAC/metadata_iterators.c 981 0.0%
chain_read_with_callbacks_ /src/flac/src/libFLAC/metadata_iterators.c 979 0.0%
FLAC::Metadata::get_cuesheet(charconst*,FLAC::Metadata::CueSheet*&) /src/flac/src/libFLAC++/metadata.cpp 861 0.0%
FLAC::Metadata::get_tags(charconst*,FLAC::Metadata::VorbisComment*&) /src/flac/src/libFLAC++/metadata.cpp 861 0.0%