Ruby 2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)

uninitialized.c
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1 /* { dg-do run } */
2 #include "ffitest.h"
3
4 typedef struct
5 {
6 unsigned char uc;
7 double d;
8 unsigned int ui;
9 } test_structure_1;
10
11 static test_structure_1 struct1(test_structure_1 ts)
12 {
13 ts.uc++;
14 ts.d--;
15 ts.ui++;
16
17 return ts;
18 }
19
20 int main (void)
21 {
22 ffi_cif cif;
23 ffi_type *args[MAX_ARGS];
24 void *values[MAX_ARGS];
25 ffi_type ts1_type;
26 ffi_type *ts1_type_elements[4];
27
28 memset(&cif, 1, sizeof(cif));
29 ts1_type.size = 0;
30 ts1_type.alignment = 0;
31 ts1_type.type = FFI_TYPE_STRUCT;
32 ts1_type.elements = ts1_type_elements;
33 ts1_type_elements[0] = &ffi_type_uchar;
34 ts1_type_elements[1] = &ffi_type_double;
35 ts1_type_elements[2] = &ffi_type_uint;
36 ts1_type_elements[3] = NULL;
37
38 test_structure_1 ts1_arg;
39 /* This is a hack to get a properly aligned result buffer */
40 test_structure_1 *ts1_result =
41 (test_structure_1 *) malloc (sizeof(test_structure_1));
42
43 args[0] = &ts1_type;
44 values[0] = &ts1_arg;
45
46 /* Initialize the cif */
47 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
48 &ts1_type, args) == FFI_OK);
49
50 ts1_arg.uc = '\x01';
51 ts1_arg.d = 3.14159;
52 ts1_arg.ui = 555;
53
54 ffi_call(&cif, FFI_FN(struct1), ts1_result, values);
55
56 CHECK(ts1_result->ui == 556);
57 CHECK(ts1_result->d == 3.14159 - 1);
58
59 free (ts1_result);
60 exit(0);
61 }
test_structure_1
Definition: struct1.c:10
memset
void * memset(void *, int, size_t)
cls_struct_combined::d
cls_struct_16byte1 d
Definition: nested_struct.c:24
malloc
void * malloc(size_t) __attribute__((__malloc__)) __attribute__((__warn_unused_result__)) __attribute__((__alloc_size__(1)))
test_structure_1::d
double d
Definition: struct1.c:13
test_structure_1::ui
unsigned int ui
Definition: struct1.c:14
NULL
#define NULL
Definition: _sdbm.c:101
exit
void exit(int __status) __attribute__((__noreturn__))
ffitest.h
CHECK
#define CHECK(sub)
Definition: compile.c:448
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
test_structure_1::uc
unsigned char uc
Definition: struct1.c:12
ffi_type_uchar
#define ffi_type_uchar
Definition: fiddle.h:55
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
MAX_ARGS
#define MAX_ARGS
Definition: function.c:15
free
#define free(x)
Definition: dln.c:52
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
main
int main(void)
Definition: uninitialized.c:20