old-autovect-branch/gcc/testsuite/gcc.c-torture/execute/20000223-1.c

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.
   2    Contributed by Nathan Sidwell 23 Feb 2000 <nathan@codesourcery.com> */
   3
   4 /* __alignof__ should never return a non-power of 2
   5    eg, sizeof(long double) might be 12, but that means it must be alignable
   6    on a 4 byte boundary. */
   7
   8 void check (char const *type, int align)
   9 {
  10   if ((align & -align) != align)
  11     {
  12       abort ();
  13     }
  14 }
  15
  16 #define QUOTE_(s) #s
  17 #define QUOTE(s) QUOTE_(s)
  18
  19 #define check(t) check(QUOTE(t), __alignof__(t))
  20
  21 // This struct should have an alignment of the lcm of all the types. If one of
  22 // the base alignments is not a power of two, then A cannot be power of two
  23 // aligned.
  24 struct A
  25 {
  26   char c;
  27   signed short ss;
  28   unsigned short us;
  29   signed int si;
  30   unsigned int ui;
  31   signed long sl;
  32   unsigned long ul;
  33   signed long long sll;
  34   unsigned long long ull;
  35   float f;
  36   double d;
  37   long double ld;
  38   void *dp;
  39   void (*fp)();
  40 };
  41
  42 int main ()
  43 {
  44   check (void);
  45   check (char);
  46   check (signed short);
  47   check (unsigned short);
  48   check (signed int);
  49   check (unsigned int);
  50   check (signed long);
  51   check (unsigned long);
  52   check (signed long long);
  53   check (unsigned long long);
  54   check (float);
  55   check (double);
  56   check (long double);
  57   check (void *);
  58   check (void (*)());
  59   check (struct A);
  60   return 0;
  61 }