gcc/testsuite/gcc.c-torture/compile/20001221-1.c

   1 /* { dg-skip-if "requires alloca" { ! alloca } { "-O0" } { "" } } */
   2 static void
   3 foo ()
   4 {
   5   long maplength;
   6   int type;
   7   {
   8     const long nibbles = 8;
   9     char buf1[nibbles + 1];
  10     char buf2[nibbles + 1];
  11     char buf3[nibbles + 1];
  12     buf1[nibbles] = '\0';
  13     buf2[nibbles] = '\0';
  14     buf3[nibbles] = '\0';
  15     ((nibbles) <= 16
  16      ? (({
  17        void *__s = (buf1);
  18        union
  19          {
  20            unsigned int __ui;
  21            unsigned short int __usi;
  22            unsigned char __uc;
  23          }
  24        *__u = __s;
  25        unsigned char __c = (unsigned char)('0');
  26        switch ((unsigned int) (nibbles))
  27          {
  28           case 16:
  29            __u->__ui = __c * 0x01010101;
  30            __u = __extension__ ((void *) __u + 4);
  31           case 12:
  32            __u->__ui = __c * 0x01010101;
  33            __u = __extension__ ((void *) __u + 4);
  34           case 0:
  35            break;
  36          }
  37        __s;
  38      }))
  39      : 0);
  40     ((nibbles) <= 16
  41      ? (({
  42        void *__s = (buf2);
  43        union
  44          {
  45            unsigned int __ui;
  46            unsigned short int __usi;
  47            unsigned char __uc;
  48          }
  49        *__u = __s;
  50        unsigned char __c = (unsigned char)('0');
  51        switch ((unsigned int) (nibbles))
  52          {
  53           case 16:
  54            __u->__ui = __c * 0x01010101;
  55            __u = __extension__ ((void *) __u + 4);
  56           case 12:
  57            __u->__ui = __c * 0x01010101;
  58            __u = __extension__ ((void *) __u + 4);
  59           case 8:
  60            __u->__ui = __c * 0x01010101;
  61            __u = __extension__ ((void *) __u + 4);
  62           case 4:
  63            __u->__ui = __c * 0x01010101;
  64           case 0:
  65            break;
  66          }
  67        __s;
  68      }))
  69      : 0);
  70   }
  71 }