File: packed-struct.c

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gcc-arm-none-eabi 15%3A8-2019-q3-1
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/* { dg-do compile } */

struct unpacked
{
  int i;
  char c;
};

#pragma pack(1)

struct packed
{
  int i;
  char c;
};

struct packed_contains_unpacked
{
  char c;
  struct unpacked uuuu;  /* This should generate an error message.  */
}; 			/* { dg-error "unpacked structure/union inside a packed struct" "XFAILed until patch for generic GCC structure layout code is accepted" { xfail rx-*-* } } */

union contains_unpacked
{
  char c;
  struct unpacked uuuu;  /* This should not.  */
};

struct packed_contains_packed
{
  char c;
  struct packed ppppp;   /* This should not.  */
};

#pragma pack()

struct unpacked_contains_packed
{
  char c;
  struct packed p;
};

struct unpacked_contains_unpacked
{
  char c;
  struct unpacked u;
};


int s1 = sizeof (struct unpacked);
int s2 = sizeof (struct packed);
int s3 = sizeof (struct packed_contains_unpacked);
int s4 = sizeof (struct packed_contains_packed);
int s5 = sizeof (struct unpacked_contains_packed);
int s6 = sizeof (struct unpacked_contains_unpacked);