Ruby: ext/fiddle/libffi-3.2.1/testsuite/libffi.call/return_sl.c Source File

Ruby 3.0.5p211 (2022-11-24 revision ba5cf0f7c52d4d35cc6a173c89eda98ceffa2dcf)

return_sl.c
Go to the documentation of this file.
1/* Area: ffi_call
2 Purpose: Check if long as return type is handled correctly.
3 Limitations: none.
4 PR: none.
5 */
6
7/* { dg-do run } */
8#include "ffitest.h"
9static long return_sl(long l1, long l2)
10{
11 return l1 - l2;
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 l1, l2;
21
22 args[0] = &ffi_type_slong;
23 args[1] = &ffi_type_slong;
24 values[0] = &l1;
25 values[1] = &l2;
26
27 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2,
28 &ffi_type_slong, args) == FFI_OK);
29
30 l1 = 1073741823L;
31 l2 = 1073741824L;
32
33 ffi_call(&cif, FFI_FN(return_sl), &res, values);
34 printf("res: %ld, %ld\n", (long)res, l1 - l2);
35 /* { dg-output "res: -1, -1" } */
36
37 exit(0);
38}
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
ffi_arg
unsigned long ffi_arg
Definition: ffitarget.h:30
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
CHECK
#define CHECK(sub)
Definition: compile.c:429
ffitest.h
MAX_ARGS
#define MAX_ARGS
Definition: function.c:17
ffi_prep_cif
ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs, ffi_type *rtype, ffi_type **atypes)
Definition: prep_cif.c:226
main
int main(void)
Definition: return_sl.c:14