 | | | Release works, Debug (still) crashes on OS X Leopard, Xcode 3.0 (Part 2) | Release works, Debug (still) crashes on OS X Leopard, Xcode 3.0 (Part 2) 2007-12-03 - By Graham Reitz
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Below is the rest of it...
5) The simple main function
6) gdb run with backtrace
5) Code:
#include <iostream>
#include <string>
#include <mysql++.h>
using namespace std;
using namespace mysqlpp;
int main (int argc, char * const argv[])
{
string database_name = "tac_db_rev_4";
string ip_address = "X.X.X.X";
string username = "admin";
string password = "admin";
string client_id = "graham";
string client_pw = "reitz";
string error_msg;
cout << "Attempting to connect to the database...";
Connection m_connection(database_name.c_str(),
ip_address.c_str(),
username.c_str(),
password.c_str(),
3306,
false,
15);
Result client_id_result;
try
{
cout << "connected to the database\n";
Query client_id_query = m_connection.query();
client_id_query <<
"select client_id from clients where client_user_name ="
<< quote_only << client_id << " and client_password ="
<< quote_only << client_pw;
cout << "Query created: " << client_id_query.preview() << endl;
client_id_result = client_id_query.store();
if (client_id_result)
{
cout << "Result received = " << client_id_result.rows()
<< endl;
Row client_id_row;
Row::size_type i = 0;
client_id_row = client_id_result.at(i);
}
Row client_id_row;
// The "=" versus "==" syntax is more mysqlpp bs
if (client_id_row = client_id_result.at(0))
{
cout << client_id_row.at(0) << endl;
return client_id_row.at(0);
}
}
catch (exception &e)
{
cout << "exception occurred...";
cout << e.what() << endl;
}
catch (...)
{
error_msg = "Unknown exception";
cout << error_msg << endl;
}
m_connection.close();
return 0;
}
6) gdb run with backtrace
(gdb) run
Starting program: /Users/grahamreitz/Development/Projects/tac/build/
Debug/tac
Reading symbols for shared libraries ++++++... done
Attempting to connect to the database...connected to the database
Query created: select client_id from clients where client_user_name
='graham' and client_password ='reitz'
Result received = 1
/Developer/SDKs/MacOSX10.5.sdk/usr/include/c++/4.0.0/bits/
stl_algobase.h:382:
error: function requires a valid iterator range [__first, __last).
Objects involved in the operation:
iterator "__first" @ 0x0xbfffee50 {
type = N10__gnu_norm19_Bit_const_iteratorE;
}
iterator "__last" @ 0x0xbfffee58 {
type = N10__gnu_norm19_Bit_const_iteratorE;
}
Program received signal SIGABRT, Aborted.
0x9264e47a in __kill ()
(gdb) backtrace
#0 0x9264e47a in __kill ()
#1 0x9264e46d in kill$UNIX2003 ()
#2 0x926c5782 in raise ()
#3 0x926d4d3f in abort ()
#4 0x92b476f9 in __gnu_debug::_Error_formatter::_M_error ()
#5 0x00005bdb in std::copy<__gnu_norm::_Bit_const_iterator,
__gnu_norm::_Bit_iterator> (__first={<__gnu_norm::_Bit_iterator_base>
= {<> = {<No data fields>}, _M_p = 0x700bc4, _M_offset = 3221222728},
<No data fields>}, __last={<__gnu_norm::_Bit_iterator_base> = {<> =
{<No data fields>}, _M_p = 0xbffff601, _M_offset = 2413828210}, <No
data fields>}, __result={<__gnu_norm::_Bit_iterator_base> = {<> = {<No
data fields>}, _M_p = 0x1000000, _M_offset = 0}, <No data fields>}) at
stl_algobase.h:382
#6 0x00005cd6 in __gnu_norm::vector<bool, std::allocator<bool>
> ::operator= (this=0xbffff4c8, __x=@(protected)) at stl_bvector.h:709
#7 0x00005d3a in __gnu_debug_def::vector<bool, std::allocator<bool>
> ::operator= (this=0xbffff4c8, __x=@(protected)) at debug/vector:100
#8 0x00006eb4 in mysqlpp::Row::operator= (this=0xbffff4a0) at row.h:54
#9 0x00001ef9 in main (argc=1, argv=0xbffff6f0) at /Users/grahamreitz/
Development/Projects/tac/main.cpp:51
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