Qt widgets limit exceeded

I am using Qt 5.6 . I have created a application which contains many widgets such as labels,Buttons..etc. Now I added a label in to my gui , But I am not able to access the label (ui->label_name). While compile the application I am getting below prints.

*In file included from mainwindow.cpp:10:0: ui_mainwindow.h: In member function 'void Ui_MainWindow::setupUi(QMainWindow*)': ui_mainwindow.h:853:10: note: variable tracking size limit exceeded with -fvar-tracking-assignments, retrying without
     void setupUi(QMainWindow *MainWindow)*