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37f138df6b
[git-generate] cd src/cmd/compile/internal/gc rf ' mv bench_test.go constFold_test.go dep_test.go \ fixedbugs_test.go iface_test.go float_test.go global_test.go \ inl_test.go lang_test.go logic_test.go \ reproduciblebuilds_test.go shift_test.go ssa_test.go \ truncconst_test.go zerorange_test.go \ cmd/compile/internal/test ' mv testdata ../test Change-Id: I041971b7e9766673f7a331679bfe1c8110dcda66 Reviewed-on: https://go-review.googlesource.com/c/go/+/279480 Trust: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
126 lines
1.9 KiB
Go
126 lines
1.9 KiB
Go
// Copyright 2016 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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package test
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import "testing"
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// Test to make sure we make copies of the values we
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// put in interfaces.
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var x int
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func TestEfaceConv1(t *testing.T) {
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a := 5
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i := interface{}(a)
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a += 2
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if got := i.(int); got != 5 {
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t.Errorf("wanted 5, got %d\n", got)
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}
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}
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func TestEfaceConv2(t *testing.T) {
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a := 5
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sink = &a
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i := interface{}(a)
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a += 2
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if got := i.(int); got != 5 {
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t.Errorf("wanted 5, got %d\n", got)
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}
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}
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func TestEfaceConv3(t *testing.T) {
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x = 5
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if got := e2int3(x); got != 5 {
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t.Errorf("wanted 5, got %d\n", got)
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}
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}
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//go:noinline
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func e2int3(i interface{}) int {
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x = 7
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return i.(int)
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}
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func TestEfaceConv4(t *testing.T) {
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a := 5
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if got := e2int4(a, &a); got != 5 {
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t.Errorf("wanted 5, got %d\n", got)
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}
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}
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//go:noinline
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func e2int4(i interface{}, p *int) int {
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*p = 7
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return i.(int)
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}
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type Int int
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var y Int
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type I interface {
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foo()
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}
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func (i Int) foo() {
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}
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func TestIfaceConv1(t *testing.T) {
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a := Int(5)
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i := interface{}(a)
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a += 2
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if got := i.(Int); got != 5 {
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t.Errorf("wanted 5, got %d\n", int(got))
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}
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}
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func TestIfaceConv2(t *testing.T) {
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a := Int(5)
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sink = &a
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i := interface{}(a)
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a += 2
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if got := i.(Int); got != 5 {
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t.Errorf("wanted 5, got %d\n", int(got))
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}
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}
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func TestIfaceConv3(t *testing.T) {
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y = 5
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if got := i2Int3(y); got != 5 {
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t.Errorf("wanted 5, got %d\n", int(got))
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}
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}
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//go:noinline
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func i2Int3(i I) Int {
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y = 7
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return i.(Int)
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}
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func TestIfaceConv4(t *testing.T) {
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a := Int(5)
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if got := i2Int4(a, &a); got != 5 {
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t.Errorf("wanted 5, got %d\n", int(got))
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}
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}
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//go:noinline
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func i2Int4(i I, p *Int) Int {
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*p = 7
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return i.(Int)
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}
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func BenchmarkEfaceInteger(b *testing.B) {
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sum := 0
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for i := 0; i < b.N; i++ {
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sum += i2int(i)
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}
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sink = sum
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}
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//go:noinline
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func i2int(i interface{}) int {
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return i.(int)
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}
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