double QLabel declaration problem

[Pawello]

Hi, I've found strange problem in my program.

I can declare one Qlabel item, but declaring another one is connected with compilation error (file-build-desktop-....\debug\file.exe ends with code -1073741819 instead of 0).

file.h

#include <QLabel>
 
class N : public QWidget
  {
  Q_OBJECT
  public:
  N(QWidget *parent = 0);
  private:
  QLabel *firstlabel;
  QLabel *secondlabel;
  }

#include <QLabel>

class N : public QWidget
  {
  Q_OBJECT
  public:
  N(QWidget *parent = 0);
  private:
  QLabel *firstlabel;
  QLabel *secondlabel;
  }

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