Ruby  2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)
strlen.c
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1 /* Area: ffi_call
2  Purpose: Check strlen function call.
3  Limitations: none.
4  PR: none.
5  Originator: From the original ffitest.c */
6 
7 /* { dg-do run } */
8 #include "ffitest.h"
9 
10 static size_t ABI_ATTR my_strlen(char *s)
11 {
12  return (strlen(s));
13 }
14 
15 int main (void)
16 {
17  ffi_cif cif;
18  ffi_type *args[MAX_ARGS];
19  void *values[MAX_ARGS];
20  ffi_arg rint;
21  char *s;
22 
23  args[0] = &ffi_type_pointer;
24  values[0] = (void*) &s;
25 
26  /* Initialize the cif */
27  CHECK(ffi_prep_cif(&cif, ABI_NUM, 1,
28  &ffi_type_sint, args) == FFI_OK);
29 
30  s = "a";
31  ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
32  CHECK(rint == 1);
33 
34  s = "1234567";
35  ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
36  CHECK(rint == 7);
37 
38  s = "1234567890123456789012345";
39  ffi_call(&cif, FFI_FN(my_strlen), &rint, values);
40  CHECK(rint == 25);
41 
42  exit (0);
43 }
44 
ffi_arg
unsigned long ffi_arg
Definition: ffitarget.h:30
main
int main(void)
Definition: strlen.c:15
ABI_NUM
#define ABI_NUM
Definition: ffitest.h:35
exit
void exit(int __status) __attribute__((__noreturn__))
strlen
size_t strlen(const char *)
ffitest.h
CHECK
#define CHECK(sub)
Definition: compile.c:448
rint
double rint(double)
ABI_ATTR
#define ABI_ATTR
Definition: ffitest.h:36
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
ffi_call
void ffi_call(ffi_cif *cif, void(*fn)(void), void *rvalue, void **avalue)
Definition: ffi.c:813