jni/ruby/ext/fiddle/libffi-3.2.1/testsuite/libffi.call/cls_schar.c


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/* Area:        closure_call
   Purpose:     Check return value schar.
   Limitations: none.
   PR:          none.
   Originator:  <andreast@gcc.gnu.org> 20031108  */


/* { dg-do run } */
#include "ffitest.h"

static void cls_ret_schar_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
                             void* userdata __UNUSED__)
{
  *(ffi_arg*)resp = *(signed char *)args[0];
  printf("%d: %d\n",*(signed char *)args[0],
         (int)*(ffi_arg *)(resp));
}
typedef signed char (*cls_ret_schar)(signed char);

int main (void)
{
  ffi_cif cif;
  void *code;
  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  ffi_type * cl_arg_types[2];
  signed char res;

  cl_arg_types[0] = &ffi_type_schar;
  cl_arg_types[1] = NULL;

  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
                     &ffi_type_schar, cl_arg_types) == FFI_OK);

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

  res = (*((cls_ret_schar)code))(127);
  /* { dg-output "127: 127" } */
  printf("res: %d\n", res);
  /* { dg-output "\nres: 127" } */

  exit(0);
}