44 lines
947 B
Go
44 lines
947 B
Go
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// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !nacl
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package runtime_test
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import (
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"reflect"
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"runtime"
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"testing"
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"unsafe"
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)
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// Assert that the size of important structures do not change unexpectedly.
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func TestSizeof(t *testing.T) {
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if runtime.Compiler != "gc" {
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t.Skip("skipping size test; specific to gc compiler")
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}
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const _64bit = unsafe.Sizeof(uintptr(0)) == 8
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var tests = []struct {
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val interface{} // type as a value
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_32bit uintptr // size on 32bit platforms
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_64bit uintptr // size on 64bit platforms
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}{
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{runtime.G{}, 216, 376}, // g, but exported for testing
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}
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for _, tt := range tests {
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want := tt._32bit
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if _64bit {
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want = tt._64bit
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}
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got := reflect.TypeOf(tt.val).Size()
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if want != got {
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t.Errorf("unsafe.Sizeof(%T) = %d, want %d", tt.val, got, want)
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}
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}
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}
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