jni/ruby/ext/fiddle/libffi-3.2.1/testsuite/libffi.call/cls_dbls_struct.c


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/* Area:                ffi_call, closure_call
   Purpose:             Check double arguments in structs.
   Limitations: none.
   PR:                  none.
   Originator:  Blake Chaffin 6/23/2007 */

/* { dg-do run } */

#include "ffitest.h"

typedef struct Dbls {
        double x;
        double y;
} Dbls;

void
closure_test_fn(Dbls p)
{
        printf("%.1f %.1f\n", p.x, p.y);
}

void
closure_test_gn(ffi_cif* cif __UNUSED__, void* resp __UNUSED__,
                void** args, void* userdata __UNUSED__)
{
        closure_test_fn(*(Dbls*)args[0]);
}

int main(int argc __UNUSED__, char** argv __UNUSED__)
{
        ffi_cif cif;

        void *code;
        ffi_closure*    pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
        ffi_type*               cl_arg_types[1];

        ffi_type        ts1_type;
        ffi_type*       ts1_type_elements[4];

        Dbls arg = { 1.0, 2.0 };

        ts1_type.size = 0;
        ts1_type.alignment = 0;
        ts1_type.type = FFI_TYPE_STRUCT;
        ts1_type.elements = ts1_type_elements;

        ts1_type_elements[0] = &ffi_type_double;
        ts1_type_elements[1] = &ffi_type_double;
        ts1_type_elements[2] = NULL;

        cl_arg_types[0] = &ts1_type;

        /* Initialize the cif */
        CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
                                 &ffi_type_void, cl_arg_types) == FFI_OK);

        CHECK(ffi_prep_closure_loc(pcl, &cif, closure_test_gn, NULL, code) == FFI_OK);

        ((void*(*)(Dbls))(code))(arg);
        /* { dg-output "1.0 2.0\n" } */

        closure_test_fn(arg);
        /* { dg-output "1.0 2.0\n" } */

        return 0;
}