Function apr_xml_parser_geterror 

pub unsafe extern "C" fn apr_xml_parser_geterror(
    parser: *mut apr_xml_parser,
    errbuf: *mut c_char,
    errbufsize: apr_size_t,
) -> *mut c_char

Fetch additional error information from the parser. @param parser The XML parser to query for errors. @param errbuf A buffer for storing error text. @param errbufsize The length of the error text buffer. @return The error buffer