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      1 /* Area:	ffi_call
      2    Purpose:	Check structures.
      3    Limitations:	none.
      4    PR:		none.
      5    Originator:	From the original ffitest.c  */
      6 
      7 /* { dg-do run } */
      8 #include "ffitest.h"
      9 
     10 typedef struct
     11 {
     12   double d1;
     13   double d2;
     14 } test_structure_2;
     15 
     16 static test_structure_2 struct2(test_structure_2 ts)
     17 {
     18   ts.d1--;
     19   ts.d2--;
     20 
     21   return ts;
     22 }
     23 
     24 int main (void)
     25 {
     26   ffi_cif cif;
     27   ffi_type *args[MAX_ARGS];
     28   void *values[MAX_ARGS];
     29   test_structure_2 ts2_arg;
     30   ffi_type ts2_type;
     31   ffi_type *ts2_type_elements[3];
     32   ts2_type.size = 0;
     33   ts2_type.alignment = 0;
     34   ts2_type.type = FFI_TYPE_STRUCT;
     35   ts2_type.elements = ts2_type_elements;
     36   ts2_type_elements[0] = &ffi_type_double;
     37   ts2_type_elements[1] = &ffi_type_double;
     38   ts2_type_elements[2] = NULL;
     39 
     40 
     41   /* This is a hack to get a properly aligned result buffer */
     42   test_structure_2 *ts2_result =
     43     (test_structure_2 *) malloc (sizeof(test_structure_2));
     44 
     45   args[0] = &ts2_type;
     46   values[0] = &ts2_arg;
     47 
     48   /* Initialize the cif */
     49   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, &ts2_type, args) == FFI_OK);
     50 
     51   ts2_arg.d1 = 5.55;
     52   ts2_arg.d2 = 6.66;
     53 
     54   printf ("%g\n", ts2_arg.d1);
     55   printf ("%g\n", ts2_arg.d2);
     56 
     57   ffi_call(&cif, FFI_FN(struct2), ts2_result, values);
     58 
     59   printf ("%g\n", ts2_result->d1);
     60   printf ("%g\n", ts2_result->d2);
     61 
     62   CHECK(ts2_result->d1 == 5.55 - 1);
     63   CHECK(ts2_result->d2 == 6.66 - 1);
     64 
     65   free (ts2_result);
     66   exit(0);
     67 }
     68