github.com/prattmic/llgo-embedded@v0.0.0-20150820070356-41cfecea0e1e/third_party/gofrontend/libffi/testsuite/libffi.call/cls_uint_va.c (about)

     1  /* Area:	closure_call
     2     Purpose:	Test anonymous unsigned int argument.
     3     Limitations:	none.
     4     PR:		none.
     5     Originator:	ARM Ltd. */
     6  
     7  /* { dg-do run } */
     8  
     9  #include "ffitest.h"
    10  
    11  typedef unsigned int T;
    12  
    13  static void cls_ret_T_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
    14  			 void* userdata __UNUSED__)
    15   {
    16     *(ffi_arg *)resp = *(T *)args[0];
    17  
    18     printf("%d: %d %d\n", (int)*(ffi_arg *)resp, *(T *)args[0], *(T *)args[1]);
    19   }
    20  
    21  typedef T (*cls_ret_T)(T, ...);
    22  
    23  int main (void)
    24  {
    25    ffi_cif cif;
    26    void *code;
    27    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    28    ffi_type * cl_arg_types[3];
    29    T res;
    30  
    31    cl_arg_types[0] = &ffi_type_uint;
    32    cl_arg_types[1] = &ffi_type_uint;
    33    cl_arg_types[2] = NULL;
    34  
    35    /* Initialize the cif */
    36    CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 2,
    37  			 &ffi_type_uint, cl_arg_types) == FFI_OK);
    38  
    39    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_ret_T_fn, NULL, code)  == FFI_OK);
    40    res = ((((cls_ret_T)code)(67, 4)));
    41    /* { dg-output "67: 67 4" } */
    42    printf("res: %d\n", res);
    43    /* { dg-output "\nres: 67" } */
    44    exit(0);
    45  }