Random Segmentation Fault on QApplication constructor

I'm using a sc2440 arm board, managed to install everything and started developing WORKING apps.
But once the app started to grow a seg fault error occurs on QApplication constructor. The error is not random during different runs of the same binary. It's the code, if I had something new it gives seg fault error, if i had a bit more code it starts again doing it correctly.
What could the problem be?

NOTE: on host machine (ubuntu) works every time.