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Contents
/* Area: ffi_call, closure_call
Purpose: Test long doubles passed in variable argument lists.
Limitations: none.
PR: none.
Originator: Blake Chaffin 6/6/2007 */
/* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
/* { dg-output "" { xfail avr32*-*-* } } */
/* { dg-output "" { xfail mips-sgi-irix6* } } PR libffi/46660 */
#include "ffitest.h"
#include <stdarg.h>
#define BUF_SIZE 50
static char buffer[BUF_SIZE];
static int
wrap_printf(char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
long double ldArg = va_arg(ap, long double);
va_end(ap);
CHECK((int)ldArg == 7);
return printf(fmt, ldArg);
}
static void
cls_longdouble_va_fn(ffi_cif* cif __UNUSED__, void* resp,
void** args, void* userdata __UNUSED__)
{
char* format = *(char**)args[0];
long double ldValue = *(long double*)args[1];
*(ffi_arg*)resp = printf(format, ldValue);
CHECK(*(ffi_arg*)resp == 4);
snprintf(buffer, BUF_SIZE, format, ldValue);
CHECK(strncmp(buffer, "7.0\n", BUF_SIZE) == 0);
}
int main (void)
{
ffi_cif cif;
void *code;
ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
void* args[3];
ffi_type* arg_types[3];
char* format = "%.1Lf\n";
long double ldArg = 7;
ffi_arg res = 0;
arg_types[0] = &ffi_type_pointer;
arg_types[1] = &ffi_type_longdouble;
arg_types[2] = NULL;
/* This printf call is variadic */
CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 1, 2, &ffi_type_sint,
arg_types) == FFI_OK);
args[0] = &format;
args[1] = &ldArg;
args[2] = NULL;
ffi_call(&cif, FFI_FN(wrap_printf), &res, args);
/* { dg-output "7.0" } */
printf("res: %d\n", (int) res);
/* { dg-output "\nres: 4" } */
CHECK(res == 4);
CHECK(ffi_prep_closure_loc(pcl, &cif, cls_longdouble_va_fn, NULL,
code) == FFI_OK);
res = ((int(*)(char*, ...))(code))(format, ldArg);
/* { dg-output "\n7.0" } */
printf("res: %d\n", (int) res);
/* { dg-output "\nres: 4" } */
CHECK(res == 4);
exit(0);
}
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