gcc/testsuite/g++.old-deja/g++.martin/sts_vectini.C

   1 // { dg-do run  }
   2 // { dg-options "-O2 -w" }
   3 // egcs-bugs 1999-02-22 14:24 Stefan Schwarzer
   4 // sts@ica1.uni-stuttgart.de
   5 // optimizer problem in egcs <= 1.1.1
   6
   7 struct XTVec{
   8   XTVec(){x[0]=x[1] =x[2] =0;}
   9   XTVec(int ax,int y=0.,int z=0.){x[0]=ax;x[1]=y; x[2]=z; }
  10   int& operator[](int);
  11
  12   int x[3];
  13 };
  14
  15 inline
  16 int & XTVec::operator[](int i){
  17   return x[i];
  18 }
  19
  20 inline
  21 XTVec& operator+=(XTVec& lhs, XTVec& rhs){
  22   lhs[0]+=rhs[0];
  23   lhs[1]+=rhs[1];
  24   lhs[2]+=rhs[2];
  25   return lhs;
  26 }
  27
  28 inline
  29 XTVec operator+(XTVec& lhs, XTVec& rhs){
  30   XTVec result(lhs);
  31   return result += rhs;
  32 }
  33
  34 int main()
  35 {
  36   XTVec ur(4.,0.,1.);
  37   XTVec ll(0.,2.,0.);
  38   XTVec initsum(ur + ll);
  39
  40   // sum of components should be 7
  41   return (initsum[0] + initsum[1] + initsum[2] - 7);
  42 }