Project: wuffs

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 11
Lines of code 43336
Lines covered 30512
Code coverage 70.41%
Code coverage report Report link
Static reachability 39.71%
Fuzz Introspector report Report link (from 2025-03-27)
Fuzzer Code coverage (lines) Latest Report Comments
bmp_fuzzer 19.98% (avg: 19.99%, max: 19.99%) 2025-03-27
bzip2_fuzzer 10.45% (avg: 10.46%, max: 10.46%) 2025-03-27
cbor_fuzzer 8.18% (avg: 8.19%, max: 8.19%) 2025-03-27
gif_fuzzer 18.13% (avg: 18.14%, max: 18.14%) 2025-03-27
jpeg_fuzzer 34.31% (avg: 34.32%, max: 34.32%) 2025-03-27
json_fuzzer 21.84% (avg: 21.85%, max: 21.85%) 2025-03-27
pixel_swizzler_fuzzer 46.73% (avg: 46.73%, max: 46.75%) 2025-03-27
png_fuzzer 31.73% (avg: 31.74%, max: 31.74%) 2025-03-27
targa_fuzzer 12.93% (avg: 12.94%, max: 12.94%) 2025-03-27
xz_fuzzer 31.41% (avg: 31.42%, max: 31.43%) 2025-03-27
zlib_fuzzer 13.93% (avg: 13.94%, max: 13.94%) 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
wuffs_png__decoder__tell_me_more /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 579 0.0%
wuffs_png__decoder__do_tell_me_more /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 565 0.0%
fuzz /src/wuffs/fuzz/c/std/cbor_fuzzer.c 303 0.0%
wuffs_base__render_number_f64 /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 150 0.0%
wuffs_base__pixel_buffer__set_color_u32_fill_rect /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 115 0.0%
wuffs_aux::private_impl::HandleMetadata(wuffs_aux::private_impl::ErrorMessagesconst&,wuffs_aux::sync_io::Input&,wuffs_base__io_buffer__struct&,wuffs_aux::sync_io::DynIOBuffer&,wuffs_base__status__struct(*)(void*,wuffs_base__io_buffer__struct*,wuffs_base__more_information__struct*,wuffs_base__io_buffer__struct*),void*,std::__1::basic_string<char,std::__1::char_traits<char>,std::__1::allocator<char>>(*)(void*,wuffs_base__more_information__structconst*,wuffs_base__slice_u8),void*) /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 97 0.0%
wuffs_private_impl__high_prec_dec__round_just_enough /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 82 0.0%
wuffs_private_impl__high_prec_dec__round_just_enough(wuffs_private_impl__high_prec_dec__struct*,int,unsignedlong) /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 82 0.0%
wuffs_deflate__decoder__decode_huffman_fast64__choosy_default /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 69 0.0%
wuffs_private_impl__high_prec_dec__parse /src/wuffs/fuzz/c/std/../../../release/c/wuffs-unsupported-snapshot.c 68 0.0%