gcc/testsuite/gcc.dg/20020411-1.c

   1 /* PR c/6223
   2    This testcase ICEd in internal check because a constant was not truncated
   3    for its mode.  */
   4 /* { dg-do compile } */
   5 /* { dg-options "-O2" } */
   6 /* { dg-options "-O2 -march=i686" { target i?86-*-* } } */
   7 /* { dg-skip-if "" { i?86-*-* } { "-m64" } { "" } } */
   8
   9 #if __INT_MAX__ > 32767
  10
  11 typedef struct
  12 {
  13   unsigned a : 16;
  14   unsigned b : 16;
  15   unsigned c : 5;
  16   unsigned d : 2;
  17   unsigned e : 1;
  18   unsigned f : 4;
  19   unsigned g : 1;
  20   unsigned h : 1;
  21   unsigned i : 1;
  22   unsigned j : 1;
  23 } T;
  24
  25 inline void
  26 foo (T *x, unsigned int y)
  27 {
  28   if ((x->j = (y >= 0x100000)))
  29     y >>= 12;
  30   x->a = y;
  31   x->f = (y >> 16);
  32 }
  33
  34 void __attribute__((noinline))
  35 bar (T *x)
  36 {
  37 }
  38
  39 void
  40 baz (unsigned int x, unsigned char y)
  41 {
  42   T t;
  43
  44   foo (&t, x - 1);
  45   t.e = 1;
  46   t.c = y;
  47   t.g = 0;
  48   t.h = 0;
  49   t.i = (y & 0x40) != 0;
  50   if (x == 1)
  51     foo (&t, 1);
  52   bar (&t);
  53 }
  54
  55 #endif /* __INT_MAX__ */