PCC_BITFIELD_TYPE_MATTERS

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1 total messages Started by Eberhard Mattes Sun, 03 Jan 1993 18:55

#1524

Author: Eberhard Mattes
Date: Sun, 03 Jan 1993 18:55

30 lines
1012 bytes

If PCC_BITFIELD_TYPE_MATTERS is undefined or 0, the following program
prints 3 instead of 2 (GCC 2.3.1). Is this a bug or a feature? (I
don't fully understand the description of PCC_BITFIELD_TYPE_MATTERS.)

----------
#include <stdio.h>
#include <stddef.h>

#pragma pack(1)

struct demo
{
  struct
    {
      short field1:5;
      short field2:5;
      short field3:6;
    } bits;
  char next;
};

int main (void)
{
  printf ("%d\n", offsetof (struct demo, next));
  return 0;
}

----------

Eberhard Mattes (mattes@azu.informatik.uni-stuttgart.de)

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