qt-creator/src/libs/utils/qtcassert.h

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#ifndef QTC_ASSERT_H
#define QTC_ASSERT_H

#include <QtCore/QDebug>

// we do not use the  'do {...} while (0)' idiom here to be able to use
// 'break' and 'continue' as 'actions'.

#define QTC_ASSERT(cond, action) \
    if(cond){}else{qDebug()<<"ASSERTION"<<#cond<<"FAILED"<<__FILE__<<__LINE__;action;}

#endif // QTC_ASSERT_H