introduce TDF_compare_debug, omit OBJ_TYPE_REF casts with it
[official-gcc.git] / libgo / misc / cgo / test / issue7560.go
blobf36d8a10234549c0b298284e63003eb3279b9f7d
1 // Copyright 2014 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 package cgotest
7 /*
8 #include <stdint.h>
10 typedef struct {
11 char x;
12 long y;
13 } __attribute__((__packed__)) misaligned;
15 int
16 offset7560(void)
18 return (uintptr_t)&((misaligned*)0)->y;
21 import "C"
23 import (
24 "reflect"
25 "testing"
28 func test7560(t *testing.T) {
29 // some mingw don't implement __packed__ correctly.
30 if C.offset7560() != 1 {
31 t.Skip("C compiler did not pack struct")
34 // C.misaligned should have x but then a padding field to get to the end of the struct.
35 // There should not be a field named 'y'.
36 var v C.misaligned
37 rt := reflect.TypeOf(&v).Elem()
38 if rt.NumField() != 2 || rt.Field(0).Name != "x" || rt.Field(1).Name != "_" {
39 t.Errorf("unexpected fields in C.misaligned:\n")
40 for i := 0; i < rt.NumField(); i++ {
41 t.Logf("%+v\n", rt.Field(i))