location_lineno   131 vm_backtrace.c 	    return location_lineno(loc->body.cfunc.prev_loc);
location_lineno   151 vm_backtrace.c     return INT2FIX(location_lineno(location_ptr(self)));
location_lineno   332 vm_backtrace.c 	    lineno = location_lineno(loc->body.cfunc.prev_loc);