Ruby 2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)

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
main
int main(void)
Definition: cls_longdouble_va.c:23
int
__inline__ int
Definition: rb_mjit_min_header-2.7.0.h:2839
printf
int int int printf(const char *__restrict,...) __attribute__((__format__(__printf__
NULL
#define NULL
Definition: _sdbm.c:101
exit
void exit(int __status) __attribute__((__noreturn__))
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
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