Here is the call stack:
#0 0x9264e47a in __kill
#1 0x9264e46d in kill$UNIX2003
#2 0x926c5782 in raise
#3 0x926d4d3f in abort
#4 0x00084537 in __gnu_debug::_Error_formatter::_M_error at debug.cc:504
#5 0x000533a5 in std::copy<__gnu_norm::_Bit_const_iterator,
__gnu_norm::_Bit_iterator> at stl_algobase.h:382
#6 0x000534a0 in __gnu_norm::vector<bool, std::allocator<bool>
>::operator= at stl_bvector.h:709
#7 0x00053504 in __gnu_debug_def::vector<bool, std::allocator<bool>
>::operator= at vector:100
#8 0x0005f256 in mysqlpp::Row::operator= at row.h:54
#9 0x000290fe in tac_db::client_id_query at tac_db.cpp:56
#10 0x00002073 in main at main.cpp:31
Here is the actual function in stl_bvector.h:
vector&
operator=(const vector& __x)
{
if (&__x == this)
return *this;
if (__x.size() > capacity())
{
this->_M_deallocate();
_M_initialize(__x.size());
}
std::copy(__x.begin(), __x.end(), begin());
this->_M_impl._M_finish = begin() + difference_type(__x.size());
return *this;
}
I must be using this wrong, but for some reason the same exact code
runs on Windows without issue. I am pretty sure the same code ran on
OS X 10.4 without issue as well. This started happening when I
upgraded to Leopard. I am really stuck.
Thanks,
Graham
On Nov 23, 2007, at 6:07 PM, Graham Reitz wrote:
> Also, I receive a EXC_BAD_ACCESS, which leads me to believe I have a
> pointer that is screwed up.
>
>
> On Nov 23, 2007, at 5:37 PM, Graham Reitz wrote:
>
>> I forgot to add:
>>
>> Mac OS X 10.5.1 (Leopard)
>> Xcode 3.0
>>
>> On Nov 23, 2007, at 5:34 PM, Graham Reitz wrote:
>>
>>> I have an application that does the following:
>>>
>>> unsigned int some_db::client_id_query(std::string &client_username,
>>> std::string &client_password,
>>> std::string &error_msg)
>>> {
>>> try
>>> {
>>> Query client_id_query = m_connection.query();
>>> client_id_query << "select client_id from clients where
>>> client_user_name ="
>>> << quote_only << client_username << " and
>>> client_password ="
>>> << quote_only << client_password;
>>>
>>> cout << "Query created\n";
>>>
>>> Result client_id_result = client_id_query.store();
>>>
>>> cout << "Result received\n";
>>>
>>> Row client_id_row;
>>> if (client_id_row = client_id_result.at(0)) // It hangs
>>> here, and eventually hard crashes.
>>> {
>>> return client_id_row.at(0);
>>> }
>>> }
>>> catch (exception &e)
>>> {
>>> error_msg = e.what();
>>> }
>>> catch (...)
>>> {
>>> error_msg = "Unknown exception";
>>> }
>>> return 0;
>>> }
>>>
>>> The output is:
>>> Connected to the some database (this is from the main function)
>>> Query created
>>> Result received (hangs here for about 20-30 seconds and than hard
>>> crashes)
>>>
>>> I can perform a manual query in the database using the mysql
>>> client and it returns a result without issue.
>>> What would cause it to hang for about 20-30 seconds at the
>>> client_id_result.at(0) call?
>>> If there is something fundamentally wrong with this code I would
>>> be grateful for any advice.
>>>
>>> Thanks,
>>> graham
>>>
>>
>
