gcc/testsuite/gcc.c-torture/compile/pr25311.c

   1
   2 struct w
   3 {
   4   int top;
   5   int left;
   6   int height;
   7   int width;
   8   struct w *next;
   9   struct w *parent;
  10   struct w *child;
  11 };
  12
  13 extern struct w *Qnil;
  14
  15 void
  16 set_size (struct w *w, int new_size, int nodelete, int set_height)
  17 {
  18   int old_size = set_height? w->height : w->width;
  19
  20   if (nodelete || w->parent == Qnil)
  21     {
  22       int last_pos, last_old_pos, pos, old_pos, first;
  23       int div_val = old_size << 1;
  24       struct w *c;
  25
  26       last_pos = first = set_height? w->top : w->left;
  27       last_old_pos = 0;
  28
  29       for (c = w->child; c != Qnil; c = c->next)
  30         {
  31           if (set_height)
  32             old_pos = last_old_pos + c->height;
  33           else
  34             old_pos = last_old_pos + c->width;
  35
  36           pos = (((old_pos * new_size) << 1) + old_size) / div_val;
  37           set_size (c, pos + first - last_pos, 1, set_height);
  38           last_pos = pos + first;
  39           last_old_pos = old_pos;
  40         }
  41
  42       if (!nodelete)
  43         for (c = w->child; c != Qnil; c = c->next)
  44           use (c);
  45     }
  46 }
  47