go/src/cmd/compile/internal/ir/sizeof_test.go
Russ Cox e84b27bec5 [dev.regabi] cmd/compile: clean up Name and Func uses
Now that we have specific types for ONAME and ODCLFUNC nodes
(*Name and *Func), use them throughout the compiler to be more
precise about what data is being operated on.

This is a somewhat large CL, but once you start applying the types
in a few places, you end up needing to apply them to many other
places to keep everything type-checking. A lot of code also melts
away as types are added.

Passes buildall w/ toolstash -cmp.

Change-Id: I21dd9b945d701c470332bac5394fca744a5b232d
Reviewed-on: https://go-review.googlesource.com/c/go/+/274097
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-11-30 18:34:01 +00:00

38 lines
825 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 ir
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
}{
{Func{}, 172, 296},
{Name{}, 128, 224},
{node{}, 84, 144},
}
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)
}
}
}