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/* Area:        ffi_call, closure_call

   Purpose:     Check structure passing with different structure size.

                Contains structs as parameter of the struct itself.

                Sample taken from Alan Modras patch to src/prep_cif.c.

   Limitations: none.

   PR:          PR 25630.

   Originator:  <andreast@gcc.gnu.org> 20051010  */

/* { dg-do run } */

#include "ffitest.h"

typedef struct A {

  double a;

  unsigned char b;

} A;

typedef struct B {

  struct A x;

  unsigned char y;

} B;

typedef struct C {

  long d;

  unsigned char e;

} C;

static B B_fn(struct A b2, struct B b3, struct C b4)

{

  struct B result;

  result.x.a = b2.a + b3.x.a + b4.d;

  result.x.b = b2.b + b3.x.b + b3.y + b4.e;

  result.y = b2.b + b3.x.b + b4.e;

  printf("%d %d %d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b,

         (int)b3.x.a, b3.x.b, b3.y, (int)b4.d, b4.e,

         (int)result.x.a, result.x.b, result.y);

  return result;

}

static void

B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,

     void* userdata __UNUSED__)

{

  struct A b0;

  struct B b1;

  struct C b2;

  b0 = *(struct A*)(args[0]);

  b1 = *(struct B*)(args[1]);

  b2 = *(struct C*)(args[2]);

  *(B*)resp = B_fn(b0, b1, b2);

}

int main (void)

{

  ffi_cif cif;

  void *code;

  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);

  void* args_dbl[4];

  ffi_type* cls_struct_fields[3];

  ffi_type* cls_struct_fields1[3];

  ffi_type* cls_struct_fields2[3];

  ffi_type cls_struct_type, cls_struct_type1, cls_struct_type2;

  ffi_type* dbl_arg_types[4];

  cls_struct_type.size = 0;

  cls_struct_type.alignment = 0;

  cls_struct_type.type = FFI_TYPE_STRUCT;

  cls_struct_type.elements = cls_struct_fields;

  cls_struct_type1.size = 0;

  cls_struct_type1.alignment = 0;

  cls_struct_type1.type = FFI_TYPE_STRUCT;

  cls_struct_type1.elements = cls_struct_fields1;

  cls_struct_type2.size = 0;

  cls_struct_type2.alignment = 0;

  cls_struct_type2.type = FFI_TYPE_STRUCT;

  cls_struct_type2.elements = cls_struct_fields2;

  struct A e_dbl = { 1.0, 7};

  struct B f_dbl = {{12.0 , 127}, 99};

  struct C g_dbl = { 2, 9};

  struct B res_dbl;

  cls_struct_fields[0] = &ffi_type_double;

  cls_struct_fields[1] = &ffi_type_uchar;

  cls_struct_fields[2] = NULL;

  cls_struct_fields1[0] = &cls_struct_type;

  cls_struct_fields1[1] = &ffi_type_uchar;

  cls_struct_fields1[2] = NULL;

  cls_struct_fields2[0] = &ffi_type_slong;

  cls_struct_fields2[1] = &ffi_type_uchar;

  cls_struct_fields2[2] = NULL;

  dbl_arg_types[0] = &cls_struct_type;

  dbl_arg_types[1] = &cls_struct_type1;

  dbl_arg_types[2] = &cls_struct_type2;

  dbl_arg_types[3] = NULL;

  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 3, &cls_struct_type1,

                     dbl_arg_types) == FFI_OK);

  args_dbl[0] = &e_dbl;

  args_dbl[1] = &f_dbl;

  args_dbl[2] = &g_dbl;

  args_dbl[3] = NULL;

  ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);

  /* { dg-output "1 7 12 127 99 2 9: 15 242 143" } */

  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));

  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));

  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));

  CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);

  res_dbl = ((B(*)(A, B, C))(code))(e_dbl, f_dbl, g_dbl);

  /* { dg-output "\n1 7 12 127 99 2 9: 15 242 143" } */

  CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a + g_dbl.d));

  CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y + g_dbl.e));

  CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b + g_dbl.e));

  exit(0);

}