File: 22_if1_b100b_bitfield_3.c

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gcc-avr 1%3A5.4.0%2BAtmel3.6.2-3
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/* { dg-options { -nostartfiles below100.o -Tbelow100.ld -O2 } } */
/* { dg-final { scan-assembler "b\[np\] B100A,#3," } } */
/* { dg-final { scan-assembler "b\[np\] B100B,#3," } } */

typedef struct
{
  unsigned char b0:1;
  unsigned char b1:1;
  unsigned char b2:1;
  unsigned char b3:1;
  unsigned char b4:1;
  unsigned char b5:1;
  unsigned char b6:1;
  unsigned char b7:1;
} BitField;

char acDummy[0xf0] __attribute__ ((__BELOW100__));
BitField B100A __attribute__ ((__BELOW100__)) =
{
1, 1, 0, 1, 0, 0, 1, 1};
unsigned char *pA = (unsigned char *) &B100A;
BitField B100B __attribute__ ((__BELOW100__)) =
{
0, 0, 1, 0, 1, 1, 0, 0};
unsigned char *pB = (unsigned char *) &B100B;

char *
Do (void)
{
  if (B100A.b3)
    {
      if (B100B.b3)
	return "Fail";
      else
	return "Success";
    }
  else
    return "Fail";
}

int
main (void)
{
  return Do ()[0] == 'F';
}