Python 3.7 build (#381)

* Updated for Python 3.7.1

recipes/python3crystax/libffi/testsuite/libffi.call/cls_8byte.c

@@ -0,0 +1,88 @@
+/* Area:	ffi_call, closure_call
+   Purpose:	Check structure passing with different structure size.
+		Depending on the ABI. Check overlapping.
+   Limitations:	none.
+   PR:		none.
+   Originator:	<andreast@gcc.gnu.org> 20030828	 */
+
+/* { dg-do run } */
+#include "ffitest.h"
+
+typedef struct cls_struct_8byte {
+  int a;
+  float b;
+} cls_struct_8byte;
+
+cls_struct_8byte cls_struct_8byte_fn(struct cls_struct_8byte a1,
+			    struct cls_struct_8byte a2)
+{
+  struct cls_struct_8byte result;
+
+  result.a = a1.a + a2.a;
+  result.b = a1.b + a2.b;
+
+  printf("%d %g %d %g: %d %g\n", a1.a, a1.b, a2.a, a2.b, result.a, result.b);
+
+  return  result;
+}
+
+static void
+cls_struct_8byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
+		    void* userdata __UNUSED__)
+{
+
+  struct cls_struct_8byte a1, a2;
+
+  a1 = *(struct cls_struct_8byte*)(args[0]);
+  a2 = *(struct cls_struct_8byte*)(args[1]);
+
+  *(cls_struct_8byte*)resp = cls_struct_8byte_fn(a1, a2);
+}
+
+int main (void)
+{
+  ffi_cif cif;
+  void *code;
+  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
+  void* args_dbl[5];
+  ffi_type* cls_struct_fields[4];
+  ffi_type cls_struct_type;
+  ffi_type* dbl_arg_types[5];
+
+  struct cls_struct_8byte g_dbl = { 1, 2.0 };
+  struct cls_struct_8byte f_dbl = { 4, 5.0 };
+  struct cls_struct_8byte res_dbl;
+
+  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_fields[0] = &ffi_type_sint;
+  cls_struct_fields[1] = &ffi_type_float;
+  cls_struct_fields[2] = NULL;
+
+  dbl_arg_types[0] = &cls_struct_type;
+  dbl_arg_types[1] = &cls_struct_type;
+  dbl_arg_types[2] = NULL;
+
+  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
+		     dbl_arg_types) == FFI_OK);
+
+  args_dbl[0] = &g_dbl;
+  args_dbl[1] = &f_dbl;
+  args_dbl[2] = NULL;
+
+  ffi_call(&cif, FFI_FN(cls_struct_8byte_fn), &res_dbl, args_dbl);
+  /* { dg-output "1 2 4 5: 5 7" } */
+  printf("res: %d %g\n", res_dbl.a, res_dbl.b);
+  /* { dg-output "\nres: 5 7" } */
+  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_8byte_gn, NULL, code) == FFI_OK);
+
+  res_dbl = ((cls_struct_8byte(*)(cls_struct_8byte, cls_struct_8byte))(code))(g_dbl, f_dbl);
+  /* { dg-output "\n1 2 4 5: 5 7" } */
+  printf("res: %d %g\n", res_dbl.a, res_dbl.b);
+  /* { dg-output "\nres: 5 7" } */
+
+  exit(0);
+}