[mythtv] Re: compiling mythtv frontend for cygwin

[Mario L]

Well i have broken it down to for sure that it is iterator problems. 
There are only so many things that you can comment out in there that
use iterators before you have a non functioning program however :).  
Launching from a command shell with the log "-l logfile.txt" will
maintain all paths, ex share/mythtv/mysql.txt etc... and log right to
a file.  I have pinpointed the first place it segfaults to main.cpp in
mythfrontend, meaningly

                    for (QStringList::Iterator it = verboseOpts.begin(); 
                         it != verboseOpts.end(); ++it )

Of course that line is only reached if you try to use a switch for "-v
______", but this is almost the 15th line of the app, there are only
so many things that could cause it!  That verboseOpts.begin() line
seems to seg fault it.  The funny thing is that QT uses that same sort
of syntax all over with .begin() and .end() in alot of files, with no
problem.  If you try to make a short app using iterators like:

#include <qapplication.h>
#include <iostream>
using namespace std;

int main()
{
     QStringList theLIST;
      theLIST << "Hello";
      theLIST << "World";
     for (QStringList::Iterator it = verboseOpts.begin();it !=
verboseOpts.end(); ++it )
     {
          cout<<*it<<endl;
     }
     return 0;
}


There are no issues whatsoever with the above code, so perhaps its not
even the fact of the using the iterators, but perhaps the text being
put into the QStringList.


The next instance for myth is in globalsettings.cpp

        addSelection(QObject::tr("Desktop Style"), "");
        QStyleFactory factory;
        QStringList list = factory.keys();
        QStringList::iterator iter = list.begin();
        for (; iter != list.end(); iter++ )
            addSelection(*iter);

Again it will segfault at the list.begin() line which makes me think
that maybe its not actually the text being put in wrong.

Whichever the case, I made a post to the kde-cygwin list in hopes that
some of the QT experts out there can lend an ear.