Hi, I would like to invite boost developers to use OSS-Fuzz, a continuous automated fuzzing service. https://github.com/google/oss-fuzz https://opensource.googleblog.com/2017/05/oss-fuzz-five-months-later-and.htm... I've made the initial set up that fuzzes boost::regex and it found 8 bugs there, see https://svn.boost.org/trac10/ticket/12818#comment:7 3460 boost: Integer-overflow in boost::re_detail_NUMBER::basic_regex_parser... 3464 boost: Integer-overflow in boost::re_detail_NUMBER::perl_matcher... 3469 boost: ASSERT: jmp->type == syntax_element_jump 3471 boost: Stack-overflow in boost::re_detail_NUMBER::basic_regex_parser... 3472 boost: Stack-overflow in boost::re_detail_NUMBER::perl_matcher… 3478 boost: Stack-buffer-overflow in boost::re_detail_NUMBER::perl_matcher... 3479 boost: Null-dereference READ in boost::re_detail_NUMBER::basic_regex... Vinnie Falco pointed me to Jens Weller's blog post about fuzzing beast: https://www.meetingcpp.com/blog/items/fuzzing-beast.html . Jens used libFuzzer, which is one of the two fuzzing engines used by OSS-Fuzz. Adding a boost library to OSS-Fuzz will look very similar to this blog post. For those of you who are at CppCon this week: we can discuss this face to face. --kcc