libgo/misc/cgo/test/issue11925.go

   1 // Copyright 2015 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.
   4
   5 // Issue 11925.  Structs with zero-length trailing fields are now
   6 // padded by the Go compiler.
   7
   8 package cgotest
   9
  10 /*
  11 struct a11925 {
  12         int i;
  13         char a[0];
  14         char b[0];
  15 };
  16
  17 struct b11925 {
  18         int i;
  19         char a[0];
  20         char b[];
  21 };
  22 */
  23 import "C"
  24
  25 import (
  26         "testing"
  27         "unsafe"
  28 )
  29
  30 func test11925(t *testing.T) {
  31         if C.sizeof_struct_a11925 != unsafe.Sizeof(C.struct_a11925{}) {
  32                 t.Errorf("size of a changed: C %d, Go %d", C.sizeof_struct_a11925, unsafe.Sizeof(C.struct_a11925{}))
  33         }
  34         if C.sizeof_struct_b11925 != unsafe.Sizeof(C.struct_b11925{}) {
  35                 t.Errorf("size of b changed: C %d, Go %d", C.sizeof_struct_b11925, unsafe.Sizeof(C.struct_b11925{}))
  36         }
  37 }