gcc/testsuite/gcc.c-torture/compile/pr42956.c

   1 /* { dg-require-effective-target alloca } */
   2 typedef const int cint;
   3 typedef struct {
   4 } Bounds;
   5 int ndim_, ncomp_, selectedcomp_, nregions_;
   6 void *voidregion_;
   7 typedef struct {
   8     double diff, err, spread;
   9 } Errors;
  10 typedef const Errors cErrors;
  11 void Split(int iregion, int depth, int xregion)
  12 {
  13   typedef struct {
  14       double avg, err, spread, chisq;
  15       double xmin[ndim_], xmax[ndim_];
  16   } Result;
  17   typedef struct region {
  18       Result result[ncomp_];
  19   } Region;
  20   Errors errors[ncomp_];
  21   int comp, ireg, xreg;
  22   for( ireg = iregion, xreg = xregion; ireg < nregions_; ireg = xreg++ )
  23     {
  24       Result *result = ((Region *)voidregion_)[ireg].result;
  25       for( comp = 0; comp < ncomp_; ++comp )
  26         {
  27           Result *r = &result[comp];
  28           cErrors *e = &errors[comp];
  29           double c = e->diff;
  30           if( r->err > 0 ) r->err = r->err*e->err + c;
  31         }
  32     }
  33 }
  34