libffi/testsuite/libffi.call/cls_double_va.c

   1 /* Area:                ffi_call, closure_call
   2    Purpose:             Test doubles passed in variable argument lists.
   3    Limitations: none.
   4    PR:                  none.
   5    Originator:  Blake Chaffin 6/6/2007   */
   6
   7 /* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
   8 /* { dg-output "" { xfail avr32*-*-* } } */
   9 /* { dg-output "" { xfail mips-sgi-irix6* } } PR libffi/46660 */
  10 /* { dg-skip-if "" arm*-*-* { "-mfloat-abi=hard" } { "" } } */
  11
  12 #include "ffitest.h"
  13
  14 static void
  15 cls_double_va_fn(ffi_cif* cif __UNUSED__, void* resp,
  16                  void** args, void* userdata __UNUSED__)
  17 {
  18         char*   format          = *(char**)args[0];
  19         double  doubleValue     = *(double*)args[1];
  20
  21         *(ffi_arg*)resp = printf(format, doubleValue);
  22 }
  23
  24 int main (void)
  25 {
  26         ffi_cif cif;
  27         void *code;
  28         ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  29         void* args[3];
  30         ffi_type* arg_types[3];
  31
  32         char*   format          = "%.1f\n";
  33         double  doubleArg       = 7;
  34         ffi_arg res                     = 0;
  35
  36         arg_types[0] = &ffi_type_pointer;
  37         arg_types[1] = &ffi_type_double;
  38         arg_types[2] = NULL;
  39
  40         CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_sint,
  41                 arg_types) == FFI_OK);
  42
  43         args[0] = &format;
  44         args[1] = &doubleArg;
  45         args[2] = NULL;
  46
  47         ffi_call(&cif, FFI_FN(printf), &res, args);
  48         // { dg-output "7.0" }
  49         printf("res: %d\n", (int) res);
  50         // { dg-output "\nres: 4" }
  51
  52         CHECK(ffi_prep_closure_loc(pcl, &cif, cls_double_va_fn, NULL, code) == FFI_OK);
  53
  54         res     = ((int(*)(char*, double))(code))(format, doubleArg);
  55         // { dg-output "\n7.0" }
  56         printf("res: %d\n", (int) res);
  57         // { dg-output "\nres: 4" }
  58
  59         exit(0);
  60 }