Function count_unprintable_chars

test/test.cpp:51–58

}

std::size_t count_unprintable_chars(const std::string& s) {
    std::size_t result = 0;
    for (std::size_t i = 0; i < s.size(); ++i) {
        result += (std::isprint(s[i]) ? 0 : 1);
    }

    return result;
}

void test_frames_string_data_validity() {
    stacktrace trace = return_from_nested_namespaces();