libffi/testsuite/libffi.call/strlen.c

   1 /* Area:        ffi_call
   2    Purpose:     Check strlen function call.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  From the original ffitest.c  */
   6
   7 /* { dg-do run } */
   8 #include "ffitest.h"
   9
  10 static size_t my_strlen(char *s)
  11 {
  12   return (strlen(s));
  13 }
  14
  15 int main (void)
  16 {
  17   ffi_cif cif;
  18   ffi_type *args[MAX_ARGS];
  19   void *values[MAX_ARGS];
  20   ffi_arg rint;
  21   char *s;
  22
  23   args[0] = &ffi_type_pointer;
  24   values[0] = (void*) &s;
  25
  26   /* Initialize the cif */
  27   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
  28                      &ffi_type_sint, args) == FFI_OK);
  29
  30   s = "a";
  31   ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
  32   CHECK(rint == 1);
  33
  34   s = "1234567";
  35   ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
  36   CHECK(rint == 7);
  37
  38   s = "1234567890123456789012345";
  39   ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
  40   CHECK(rint == 25);
  41
  42   exit (0);
  43 }
  44