rb_vm_localjump_error  557 eval.c         	rb_vm_localjump_error("no block given", Qnil, 0);
rb_vm_localjump_error  537 vm.c           	rb_vm_localjump_error("no block given", Qnil, 0);
rb_vm_localjump_error  866 vm_insnhelper.c 	rb_vm_localjump_error("no block given (yield)", Qnil, 0);
rb_vm_localjump_error 1318 vm_insnhelper.c 		    rb_vm_localjump_error("break from proc-closure", throwobj, TAG_BREAK);
rb_vm_localjump_error 1357 vm_insnhelper.c 		rb_vm_localjump_error("unexpected return", throwobj, TAG_RETURN);