Ruby  2.7.2p137(2020-10-01revision5445e0435260b449decf2ac16f9d09bae3cafe72)
cls_longdouble_va.c
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1 /* Area: ffi_call, closure_call
2  Purpose: Test long 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*-*-* x86_64-*-mingw* } } */
9 /* { dg-output "" { xfail mips-sgi-irix6* } } PR libffi/46660 */
10 
11 #include "ffitest.h"
12 
13 static void
14 cls_longdouble_va_fn(ffi_cif* cif __UNUSED__, void* resp,
15  void** args, void* userdata __UNUSED__)
16 {
17  char* format = *(char**)args[0];
18  long double ldValue = *(long double*)args[1];
19 
20  *(ffi_arg*)resp = printf(format, ldValue);
21 }
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  void* args[3];
29  ffi_type* arg_types[3];
30 
31  char* format = "%.1Lf\n";
32  long double ldArg = 7;
33  ffi_arg res = 0;
34 
35  arg_types[0] = &ffi_type_pointer;
36  arg_types[1] = &ffi_type_longdouble;
37  arg_types[2] = NULL;
38 
39  /* This printf call is variadic */
40  CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 2, &ffi_type_sint,
41  arg_types) == FFI_OK);
42 
43  args[0] = &format;
44  args[1] = &ldArg;
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_longdouble_va_fn, NULL,
53  code) == FFI_OK);
54 
55  res = ((int(*)(char*, ...))(code))(format, ldArg);
56  /* { dg-output "\n7.0" } */
57  printf("res: %d\n", (int) res);
58  /* { dg-output "\nres: 4" } */
59 
60  exit(0);
61 }
ffi_arg
unsigned long ffi_arg
Definition: ffitarget.h:30
int
__inline__ int
Definition: rb_mjit_min_header-2.7.2.h:2845
main
int main(void)
Definition: cls_longdouble_va.c:23
NULL
#define NULL
Definition: _sdbm.c:101
ffitest.h
__UNUSED__
#define __UNUSED__
Definition: ffitest.h:28
CHECK
#define CHECK(sub)
Definition: compile.c:448
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
ffi_prep_cif_var
ffi_status ffi_prep_cif_var(ffi_cif *cif, ffi_abi abi, unsigned int nfixedargs, unsigned int ntotalargs, ffi_type *rtype, ffi_type **atypes)
Definition: prep_cif.c:232
exit
void exit(int __status) __attribute__((__noreturn__))
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
ffi_prep_closure_loc
ffi_status ffi_prep_closure_loc(ffi_closure *closure, ffi_cif *cif, void(*fun)(ffi_cif *, void *, void **, void *), void *user_data, void *codeloc)
Definition: ffi.c:928