rb_syserr_new_str 2149 error.c            return rb_syserr_new_str(n, mesg);
rb_syserr_new_str 2157 error.c            return rb_syserr_new_str(n, arg);
rb_syserr_new_str 2175 error.c            rb_exc_raise(rb_syserr_new_str(e, mesg));
rb_syserr_new_str 2245 error.c            VALUE exc = rb_syserr_new_str(e, mesg);
rb_syserr_new_str 1809 include/ruby/ruby.h VALUE rb_syserr_new_str(int n, VALUE arg);