Subversion Repositories openrisc

/* Verify that structure return doesn't invoke memcpy on

   overlapping objects.  */

extern void abort (void);

extern int inside_main;

typedef __SIZE_TYPE__ size_t;

struct S {

  char stuff[1024];

};

union U {

  struct {

    int space;

    struct S s;

  } a;

  struct {

    struct S s;

    int space;

  } b;

};

struct S f(struct S *p)

{

  return *p;

}

void g(union U *p)

{

}

void *memcpy(void *a, const void *b, size_t len)

{

  if (inside_main)

    {

      if (a < b && a+len > b)

        abort ();

      if (b < a && b+len > a)

        abort ();

      return a;

    }

  else

    {

      char *dst = (char *) a;

      const char *src = (const char *) b;

      while (len--)

        *dst++ = *src++;

      return a;

    }

}