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
   8 #if __INT_MAX__ > 32767
   9
  10 typedef struct
  11 {
  12   unsigned a : 16;
  13   unsigned b : 16;
  14   unsigned c : 5;
  15   unsigned d : 2;
  16   unsigned e : 1;
  17   unsigned f : 4;
  18   unsigned g : 1;
  19   unsigned h : 1;
  20   unsigned i : 1;
  21   unsigned j : 1;
  22 } T;
  23
  24 inline void
  25 foo (T *x, unsigned int y)
  26 {
  27   if ((x->j = (y >= 0x100000)))
  28     y >>= 12;
  29   x->a = y;
  30   x->f = (y >> 16);
  31 }
  32
  33 void __attribute__((noinline))
  34 bar (T *x)
  35 {
  36 }
  37
  38 void
  39 baz (unsigned int x, unsigned char y)
  40 {
  41   T t;
  42
  43   foo (&t, x - 1);
  44   t.e = 1;
  45   t.c = y;
  46   t.g = 0;
  47   t.h = 0;
  48   t.i = (y & 0x40) != 0;
  49   if (x == 1)
  50     foo (&t, 1);
  51   bar (&t);
  52 }
  53
  54 #endif /* __INT_MAX__ */