Function errposition

src/backend/utils/error/elog.c:1512–1523

* errposition --- add cursor position to the current error */

 * errposition --- add cursor position to the current error
 */
int
errposition(int cursorpos)
{
	ErrorData  *edata = &errordata[errordata_stack_depth];

	/* we don't bother incrementing recursion_depth */
	CHECK_STACK_DEPTH();

	edata->cursorpos = cursorpos;

	return 0;
}

/*
 * errprintstack -- force print out stack trace