text: /* 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:		none.
     Originator:	<andreast@gcc.gnu.org> 20030911	 */
  
  /* { dg-do run { xfail mips*-*-* arm*-*-* strongarm*-*-* xscale*-*-* } } */
  #include "ffitest.h"
  
  #if LONG_MAX == 2147483647
  #define ffi_type_mylong ffi_type_uint32
  #else
  #if LONG_MAX == 9223372036854775807
  #define ffi_type_mylong ffi_type_uint64
  #else
  #error "Error, size LONG not defined as expected"
  #endif
  #endif
  
  typedef struct A {
    unsigned long a;
    unsigned char b;
  } A;
  
  typedef struct B {
    struct A x;
    unsigned char y;
  } B;
  
  B B_fn(struct A b0, struct B b1)
  {
    struct B result;
  
    result.x.a = b0.a + b1.x.a;
    result.x.b = b0.b + b1.x.b + b1.y;
    result.y = b0.b + b1.x.b;
  
    printf("%d %d %d %d %d: %d %d %d\n", b0.a, b0.b, b1.x.a, b1.x.b, b1.y,
  	 result.x.a, result.x.b, result.y);
  
    return result;
  }
  
  static void
  B_gn(ffi_cif* cif, void* resp, void** args, void* userdata)
  {
    struct A b0;
    struct B b1;
  
    b0 = *(struct A*)(args[0]);
    b1 = *(struct B*)(args[1]);
  
    *(B*)resp = B_fn(b0, b1);
  }
  
  int main (void)
  {
    ffi_cif cif;
  #ifndef USING_MMAP
    static ffi_closure cl;
  #endif
    ffi_closure *pcl;
    void* args_dbl[3];
    ffi_type* cls_struct_fields[3];
    ffi_type* cls_struct_fields1[3];
    ffi_type cls_struct_type, cls_struct_type1;
    ffi_type* dbl_arg_types[3];
  
  #ifdef USING_MMAP
    pcl = allocate_mmap (sizeof(ffi_closure));
  #else
    pcl = &cl;
  #endif
  
    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;
  
    struct A e_dbl = { 1, 7};
    struct B f_dbl = {{12 , 127}, 99};
  
    struct B res_dbl;
  
    cls_struct_fields[0] = &ffi_type_mylong;
    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;
  
  
    dbl_arg_types[0] = &cls_struct_type;
    dbl_arg_types[1] = &cls_struct_type1;
    dbl_arg_types[2] = NULL;
  
    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1,
  		     dbl_arg_types) == FFI_OK);
  
    args_dbl[0] = &e_dbl;
    args_dbl[1] = &f_dbl;
    args_dbl[2] = NULL;
  
    ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
    /* { dg-output "1 7 12 127 99: 13 233 134" } */
    CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
    CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
    CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
  
  
    CHECK(ffi_prep_closure(pcl, &cif, B_gn, NULL) == FFI_OK);
  
    res_dbl = ((B(*)(A, B))(pcl))(e_dbl, f_dbl);
    /* { dg-output "\n1 7 12 127 99: 13 233 134" } */
    CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
    CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
    CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
    exit(0);
  }
  