Google has an ongoing project for fuzzing popular open source software: https://testing.googleblog.com/2016/12/announcing-oss-fuzz-continuous-fuzzing.html https

Google has an ongoing project for fuzzing popular open source software: https://testing.googleblog.com/2016/12/announcing-oss-fuzz-continuous-fuzzing.html https://testing.googleblog.com/2016/12/announcing-oss-fuzz-c... Looks like at least _some_ GNU tools are covered: https://github.com/google/oss-fuzz/tree/master/projects/gnutls https://github.com/google/oss-fuzz/tree/master/projects/gnut...