gcc/testsuite/gcc.c-torture/execute/pr31448.c

   1 /* PR middle-end/31448, this used to ICE during expand because
   2    reduce_to_bit_field_precision was not ready to handle constants. */
   3 /* { dg-require-effective-target int32plus } */
   4
   5 typedef struct _st {
   6     int iIndex : 24;
   7     int iIndex1 : 24;
   8 } st;
   9 st *next;
  10 void g(void)
  11 {
  12     st *next = 0;
  13     int nIndx;
  14     const static int constreg[] = { 0,};
  15     nIndx = 0;
  16     next->iIndex = constreg[nIndx];
  17 }
  18 void f(void)
  19 {
  20     int nIndx;
  21     const static int constreg[] = { 0xFEFEFEFE,};
  22     nIndx = 0;
  23     next->iIndex = constreg[nIndx];
  24     next->iIndex1 = constreg[nIndx];
  25 }
  26 int main(void)
  27 {
  28   st a;
  29   next = &a;
  30   f();
  31   if (next->iIndex != 0xFFFEFEFE)
  32     __builtin_abort ();
  33   if (next->iIndex1 != 0xFFFEFEFE)
  34     __builtin_abort ();
  35   return 0;
  36 }
  37