489              PyObject *category, PyObject *sourceline)  in show_warning()  argument
524     if (sourceline) {  in show_warning()
531         if (PyUnicode_READY(sourceline) < 1)  in show_warning()
534         kind = PyUnicode_KIND(sourceline);  in show_warning()
535         data = PyUnicode_DATA(sourceline);  in show_warning()
536         len = PyUnicode_GET_LENGTH(sourceline);  in show_warning()
543         truncated = PyUnicode_Substring(sourceline, i, len);  in show_warning()
547         PyFile_WriteObject(sourceline, f_stderr, Py_PRINT_RAW);  in show_warning()
563                   PyObject *sourceline, PyObject *source)  in call_show_warning()  argument
576         show_warning(filename, lineno, text, category, sourceline);  in call_show_warning()
620               PyObject *module, PyObject *registry, PyObject *sourceline,  in warn_explicit()  argument
743                               lineno_obj, sourceline, source) < 0)  in warn_explicit()