mirror of
https://github.com/golang/go
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48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
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// Copyright 2021 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 44956: writable static temp is not exported correctly.
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// In the test below, package base is
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//
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// X = &map{...}
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//
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// which compiles to
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//
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// X = &stmp // static
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// stmp = makemap(...) // in init function
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//
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// plugin1 and plugin2 both import base. plugin1 doesn't use
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// base.X, so that symbol is deadcoded in plugin1.
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//
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// plugin1 is loaded first. base.init runs at that point, which
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// initialize base.stmp.
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//
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// plugin2 is then loaded. base.init already ran, so it doesn't run
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// again. When base.stmp is not exported, plugin2's base.X points to
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// its own private base.stmp, which is not initialized, fail.
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package main
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import "plugin"
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func main() {
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_, err := plugin.Open("issue44956p1.so")
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if err != nil {
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panic("FAIL")
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}
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p2, err := plugin.Open("issue44956p2.so")
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if err != nil {
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panic("FAIL")
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}
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f, err := p2.Lookup("F")
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if err != nil {
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panic("FAIL")
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}
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x := f.(func() *map[int]int)()
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if x == nil || (*x)[123] != 456 {
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panic("FAIL")
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}
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}
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