[rustc.git] / src / llvm / tools / clang / test / CodeGen / union-init.c

// RUN: %clang_cc1 -emit-llvm < %s -o -

// A nice and complicated initialization example with unions from Python
typedef int Py_ssize_t;

typedef union _gc_head {
  struct {
    union _gc_head *gc_next;
    union _gc_head *gc_prev;
    Py_ssize_t gc_refs;
  } gc;
  long double dummy;  /* force worst-case alignment */
} PyGC_Head;

struct gc_generation {
  PyGC_Head head;
  int threshold; /* collection threshold */
  int count;     /* count of allocations or collections of younger
                    generations */
};

#define NUM_GENERATIONS 3
#define GEN_HEAD(n) (&generations[n].head)

/* linked lists of container objects */
struct gc_generation generations[NUM_GENERATIONS] = {
  /* PyGC_Head,                     threshold,      count */
  {{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700,            0},
  {{{GEN_HEAD(1), GEN_HEAD(1), 0}},  10,            0},
  {{{GEN_HEAD(2), GEN_HEAD(2), 0}},  10,            0},
};
Commit	Line	Data
223e47cc LB	1	// RUN: %clang_cc1 -emit-llvm < %s -o -
	2
	3	// A nice and complicated initialization example with unions from Python
	4	typedef int Py_ssize_t;
	5
	6	typedef union _gc_head {
	7	struct {
	8	union _gc_head *gc_next;
	9	union _gc_head *gc_prev;
	10	Py_ssize_t gc_refs;
	11	} gc;
	12	long double dummy; /* force worst-case alignment */
	13	} PyGC_Head;
	14
	15	struct gc_generation {
	16	PyGC_Head head;
	17	int threshold; /* collection threshold */
	18	int count; /* count of allocations or collections of younger
	19	generations */
	20	};
	21
	22	#define NUM_GENERATIONS 3
	23	#define GEN_HEAD(n) (&generations[n].head)
	24
	25	/* linked lists of container objects */
	26	struct gc_generation generations[NUM_GENERATIONS] = {
	27	/* PyGC_Head, threshold, count */
	28	{{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700, 0},
	29	{{{GEN_HEAD(1), GEN_HEAD(1), 0}}, 10, 0},
	30	{{{GEN_HEAD(2), GEN_HEAD(2), 0}}, 10, 0},
	31	};