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

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

uninitialized.c
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1/* { dg-do run } */
2#include "ffitest.h"
3
4typedef struct
5{
6 unsigned char uc;
7 double d;
8 unsigned int ui;
9} test_structure_1;
10
11static 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}
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813
FFI_DEFAULT_ABI
@ FFI_DEFAULT_ABI
Definition: ffitarget.h:38
CHECK
#define CHECK(sub)
Definition: compile.c:429
free
#define free(x)
Definition: dln.c:52
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
NULL
#define NULL
Definition: regenc.h:69
malloc
#define malloc
Definition: st.c:170
test_structure_1
Definition: struct1.c:11
test_structure_1::uc
unsigned char uc
Definition: struct1.c:12
test_structure_1::ui
unsigned int ui
Definition: struct1.c:14
test_structure_1::d
double d
Definition: struct1.c:13
main
int main(void)
Definition: uninitialized.c:20