libffi/testsuite/libffi.call/return_ul.c

   1 /* Area:        ffi_call
   2    Purpose:     Check if unsigned long as return type is handled correctly.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  <kaffeetisch at gmx dot de> 20060724  */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9 static unsigned long return_ul(unsigned long ul1, unsigned long ul2)
  10 {
  11   return ul1 + ul2;
  12 }
  13
  14 int main (void)
  15 {
  16   ffi_cif cif;
  17   ffi_type *args[MAX_ARGS];
  18   void *values[MAX_ARGS];
  19   ffi_arg res;
  20   unsigned long ul1, ul2;
  21
  22   args[0] = &ffi_type_ulong;
  23   args[1] = &ffi_type_ulong;
  24   values[0] = &ul1;
  25   values[1] = &ul2;
  26
  27   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2,
  28                      &ffi_type_ulong, args) == FFI_OK);
  29
  30   ul1 = 1073741823L;
  31   ul2 = 1073741824L;
  32
  33   ffi_call(&cif, FFI_FN(return_ul), &res, values);
  34   printf("res: %lu, %lu\n", (unsigned long)res, ul1 + ul2);
  35   /* { dg-output "res: 2147483647, 2147483647" } */
  36
  37   exit(0);
  38 }