Invalid command line parsing at QCoreApplication::arguments on MS Windows family: double backslashes not recognized.
Compare argc/argv passed to main with result of QCoreApplication::arguments when command line is:
I found some rules of Windows command line parsing: http://www.autohotkey.net/~deleyd/parameters/parameters.htm#WINCRULES.
Also I tried to make solution - see attached "QtCore_winmain_argv.patch" - but it's not complete.
Try attached "qt_4_8_0_winmain_argv_bug.zip" (solution for MSVS 2010) in debug configuration to see bug (and try it after applying "QtCore_winmain_argv.patch" - bug will still be there).