rb_syserr_new    2135 error.c            return rb_syserr_new(n, mesg);
rb_syserr_new    2169 error.c            rb_exc_raise(rb_syserr_new(e, mesg));
rb_syserr_new    2237 error.c            VALUE exc = rb_syserr_new(e, mesg);
rb_syserr_new    1808 include/ruby/ruby.h VALUE rb_syserr_new(int, const char *);