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test: add bug494: test case miscompiled by gccgo
Gccgo incorrectly executed functions multiple times when they appeared in a composite literal that required a conversion between different interface types. Change-Id: I7b40e76ed23fa8440ffa03b262041265c109adf7 Reviewed-on: https://go-review.googlesource.com/1710 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Minux Ma <minux@golang.org>
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51
test/fixedbugs/bug494.go
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51
test/fixedbugs/bug494.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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// Gccgo incorrectly executed functions multiple times when they
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// appeared in a composite literal that required a conversion between
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// different interface types.
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package main
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type MyInt int
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var c MyInt
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func (c *MyInt) S(i int) {
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*c = MyInt(i)
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}
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func (c *MyInt) V() int {
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return int(*c)
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}
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type i1 interface {
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S(int)
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V() int
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}
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type i2 interface {
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V() int
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}
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type s struct {
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i i2
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}
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func f() i1 {
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c++
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return &c
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}
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func main() {
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p := &s{f()}
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if v := p.i.V(); v != 1 {
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panic(v)
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}
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if c != 1 {
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panic(c)
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}
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}
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