main.go

     1  // Copyright 2023 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Issue 62430: a program that uses plugins may appear
     6  // to have no references to an initialized global map variable defined
     7  // in some stdlib package (ex: unicode), however there
     8  // may be references to that map var from a plugin that
     9  // gets loaded.
    10  
    11  package main
    12  
    13  import (
    14  	"fmt"
    15  	"plugin"
    16  	"unicode"
    17  )
    18  
    19  func main() {
    20  	p, err := plugin.Open("issue62430.so")
    21  	if err != nil {
    22  		panic(err)
    23  	}
    24  	s, err := p.Lookup("F")
    25  	if err != nil {
    26  		panic(err)
    27  	}
    28  
    29  	f := s.(func(string) *unicode.RangeTable)
    30  	if f("C") == nil {
    31  		panic("unicode.Categories not properly initialized")
    32  	} else {
    33  		fmt.Println("unicode.Categories properly initialized")
    34  	}
    35  }
    36
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