C++ connector example run segment fault (1 reply)

hi,i counter a problem,which i don't know how to deal with it.

code is from the example website, just with a little change to pass the compile,but when i run ,i got a segment fault :
libcoretls_record.a"
warning: Could not open OSO archive file "/BinaryCache/coreTLS/coreTLS-35.30.2~2/Symbols/BuiltProducts/libcoretls_stream_parser.a"

Program received signal SIGSEGV, Segmentation fault.
0x00007fff88fe6b22 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) () from /usr/lib/libstdc++.6.dylib
(gdb) bt
#0 0x00007fff88fe6b22 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) () from /usr/lib/libstdc++.6.dylib
#1 0x000000010001930c in sql::Variant::Variant(sql::SQLString const&) ()
from /Users/apple/program/program/libmysqlcppconn.7.1.1.6.dylib
#2 0x000000010000bf69 in sql::mysql::MySQL_Connection::MySQL_Connection(sql::Driver*, sql::mysql::NativeAPI::NativeConnectionWrapper&, sql::SQLString const&, sql::SQLString const&, sql::SQLString const&) ()
from /Users/apple/program/program/libmysqlcppconn.7.1.1.6.dylib
#3 0x000000010001aa3b in sql::mysql::MySQL_Driver::connect(sql::SQLString const&, sql::SQLString const&, sql::SQLString const&) () from /Users/apple/program/program/libmysqlcppconn.7.1.1.6.dylib
#4 0x000000010000169d in main () at cpluswrapper.cpp:26


the source code happens here ,

0 sql::mysql::MySQL_Driver *driver;
21 //sql::Connection *con;
22 sql::Statement *stmt;
23 sql::ResultSet *res;
24
25 driver = sql::mysql::get_mysql_driver_instance();
26 std::auto_ptr<sql::Connection> con (driver->connect(sql::SQLString("tcp://rdsu091ibn2lcl30bs00public.mysql.rds .aliyuncs.com:3306"), sql::SQLString("ruhnn18"), sql::SQLString("ruhnn1818")));
27 con->setSchema("ruhnn");
28
29

is there something wrong with my code?
Thanks for the help.