1  /* { dg-do run { target { pcc_bitfield_type_matters || default_packed } } } */
       2  /* { dg-options "" } */
       3  
       4  /* Check bitfields and non-bitfields are aligned & sized similarly.
       5  
       6     Copyright (C) 2002 Free Software Foundation Inc
       7     Contributed by Nathan Sidwell <nathan@codesourcery.com>
       8  */
       9  
      10  #include <limits.h>
      11  #include <stdio.h>
      12  
      13  static int fail;
      14  
      15  #define CHECK1(N, T) do { \
      16    typedef struct Field_##N { char c; T f; } Field_##N; \
      17    typedef struct BitField_##N { char c; T f : sizeof (T) * CHAR_BIT; } BitField_##N; \
      18    if (sizeof (Field_##N) != sizeof (BitField_##N)) { \
      19      fail = 1; printf ("sizeof %s failed\n", #T); \
      20    } \
      21    if (__alignof__ (Field_##N) != __alignof__ (BitField_##N)) { \
      22      fail = 1; printf ("__alignof__ %s failed\n", #T); \
      23    } \
      24  } while (0)
      25  
      26  #define CHECK(N, T) do { \
      27    CHECK1(N, T); \
      28    CHECK1 (s##N, signed T); \
      29    CHECK1 (u##N, unsigned T); \
      30  } while (0)
      31   
      32  int main ()
      33  {
      34    
      35    CHECK (c, char);
      36    CHECK (s, short);
      37    CHECK (i, int);
      38    CHECK (l, long);
      39    CHECK (ll, long long);
      40    
      41    return fail;
      42  }