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https://github.com/golang/go
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51 lines
801 B
Go
51 lines
801 B
Go
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// run
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// Copyright 2014 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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// Issue 8139. The x.(T) assertions used to write 1 (unexpected)
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// return byte for the 0-byte return value T.
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package main
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import "fmt"
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type T struct{}
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func (T) M() {}
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type M interface {
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M()
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}
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var e interface{} = T{}
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var i M = T{}
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var b bool
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func f1() int {
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if b {
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return f1() // convince inliner not to inline
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}
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z := 0x11223344
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_ = e.(T)
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return z
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}
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func f2() int {
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if b {
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return f1() // convince inliner not to inline
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}
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z := 0x11223344
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_ = i.(T)
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return z
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}
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func main() {
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x := f1()
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y := f2()
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if x != 0x11223344 || y != 0x11223344 {
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fmt.Printf("BUG: x=%#x y=%#x, want 0x11223344 for both\n", x, y)
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}
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}
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