RUBY_SAFE_LEVEL_CHECK  615 include/ruby/ruby.h # define rb_secure(level) rb_secure(RUBY_SAFE_LEVEL_CHECK(level, warning))
RUBY_SAFE_LEVEL_CHECK  616 include/ruby/ruby.h # define rb_set_safe_level(level) rb_set_safe_level(RUBY_SAFE_LEVEL_CHECK(level, error))