// PR optimization/6631// { dg-do run }// { dg-options "-O" }extern "C" void abort (void);struct QSize{  QSize();  QSize( int w, int h );  int wd, ht;  friend inline const QSize operator+( const QSize &, const QSize & );};inline QSize::QSize(){ wd = ht = -1; }inline QSize::QSize( int w, int h ){ wd = w; ht = h; }inline const QSize operator+( const QSize & s1, const QSize & s2 ){ return QSize(s1.wd+s2.wd, s1.ht+s2.ht); }QSize minimumSize(){  return QSize (100, 200);}QSize totalMinimumSize(){    QSize s = minimumSize();    return s + QSize( 0, 0 );}int main(){  QSize s = totalMinimumSize();  if (s.wd != 100 || s.ht != 200)    abort ();}