1 // Copyright 2016 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 // +build !nacl 6 7 package gc 8 9 import ( 10 "reflect" 11 "testing" 12 "unsafe" 13 ) 14 15 // Assert that the size of important structures do not change unexpectedly. 16 17 func TestSizeof(t *testing.T) { 18 const _64bit = unsafe.Sizeof(uintptr(0)) == 8 19 20 var tests = []struct { 21 val interface{} // type as a value 22 _32bit uintptr // size on 32bit platforms 23 _64bit uintptr // size on 64bit platforms 24 }{ 25 {Func{}, 92, 160}, 26 {Name{}, 44, 72}, 27 {Param{}, 24, 48}, 28 {Node{}, 92, 144}, 29 {Sym{}, 60, 112}, 30 {Type{}, 60, 96}, 31 {MapType{}, 20, 40}, 32 {ForwardType{}, 16, 32}, 33 {FuncType{}, 28, 48}, 34 {StructType{}, 12, 24}, 35 {InterType{}, 4, 8}, 36 {ChanType{}, 8, 16}, 37 {ArrayType{}, 16, 24}, 38 {InterMethType{}, 4, 8}, 39 {DDDFieldType{}, 4, 8}, 40 {FuncArgsType{}, 4, 8}, 41 {ChanArgsType{}, 4, 8}, 42 {PtrType{}, 4, 8}, 43 {SliceType{}, 4, 8}, 44 } 45 46 for _, tt := range tests { 47 want := tt._32bit 48 if _64bit { 49 want = tt._64bit 50 } 51 got := reflect.TypeOf(tt.val).Size() 52 if want != got { 53 t.Errorf("unsafe.Sizeof(%T) = %d, want %d", tt.val, got, want) 54 } 55 } 56 } 57
