gcc/libffi/testsuite/libffi.call/strlen4.c

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/* Area: ffi_call
Purpose: Check strlen function call with additional arguments.
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run } */
#include "ffitest.h"
static size_t ABI_ATTR my_f(float a, char *s, int i)
{
return (size_t) ((int) strlen(s) + (int) a + i);
}
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
ffi_arg rint;
char *s;
int v1;
float v2;
args[2] = &ffi_type_sint;
args[1] = &ffi_type_pointer;
args[0] = &ffi_type_float;
values[2] = (void*) &v1;
values[1] = (void*) &s;
values[0] = (void*) &v2;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, ABI_NUM, 3,
&ffi_type_sint, args) == FFI_OK);
s = "a";
v1 = 1;
v2 = 0.0;
ffi_call(&cif, FFI_FN(my_f), &rint, values);
CHECK(rint == 2);
s = "1234567";
v2 = -1.0;
v1 = -2;
ffi_call(&cif, FFI_FN(my_f), &rint, values);
CHECK(rint == 4);
s = "1234567890123456789012345";
v2 = 1.0;
v1 = 2;
ffi_call(&cif, FFI_FN(my_f), &rint, values);
CHECK(rint == 28);
exit(0);
}