Project: nanopb

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 5
Lines of code 2405
Lines covered 2152
Code coverage 89.48%
Code coverage report Report link
Static reachability 96.20%
Fuzz Introspector report Report link (from 2025-03-27)
Fuzzer Code coverage (lines) Latest Report Comments
fuzztest_io_errors 65.98% (avg: 66.05%, max: 66.26%) 2025-03-27
fuzztest_proto2_pointer 76.61% (avg: 76.71%, max: 76.99%) 2025-03-27
fuzztest_proto2_static 77.02% (avg: 77.12%, max: 77.4%) 2025-03-27
fuzztest_proto3_pointer 67.89% (avg: 67.98%, max: 68.23%) 2025-03-27
fuzztest_proto3_static 65.48% (avg: 65.58%, max: 65.85%) 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
pb_encode_ex /src/nanopb/pb_encode.c 215 0.0%
pb_get_encoded_size /src/nanopb/pb_encode.c 213 0.0%
encode_callback_field /src/nanopb/pb_encode.c 5 0.0%
pb_release /src/nanopb/pb_decode.c 2 0.0%