go/src/cmd/internal/obj/sizeof_test.go
Cherry Zhang 24f9238b95 [dev.link] all: merge branch 'master' into dev.link
Clean merge.

Change-Id: If9bfb0f27f41563fd5d386de9c1081542c3ce498
2019-10-11 14:07:53 -04:00

39 lines
845 B
Go

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package obj
import (
"reflect"
"testing"
"unsafe"
)
// Assert that the size of important structures do not change unexpectedly.
func TestSizeof(t *testing.T) {
const _64bit = unsafe.Sizeof(uintptr(0)) == 8
var tests = []struct {
val interface{} // type as a value
_32bit uintptr // size on 32bit platforms
_64bit uintptr // size on 64bit platforms
}{
{Addr{}, 32, 48},
//{LSym{}, 56, 104}, // TODO: re-enable
{Prog{}, 132, 200},
}
for _, tt := range tests {
want := tt._32bit
if _64bit {
want = tt._64bit
}
got := reflect.TypeOf(tt.val).Size()
if want != got {
t.Errorf("unsafe.Sizeof(%T) = %d, want %d", tt.val, got, want)
}
}
}