called = true
	}

	readFunc, err = subp.Lookup("ReadCommonX")
	if err != nil {
		log.Fatalf(`sub/plugin1.Lookup("ReadCommonX") failed: %v`, err)
	}
	if got := readFunc.(func() int)(); got != wantX {
		log.Fatalf("sub/plugin1.ReadCommonX()=%d, want %d", got, wantX)
	}
	if !called {
		log.Fatal("calling ReadCommonX did not call FuncVar")
	}

	subf, err := subp.Lookup("F")
	if err != nil {

// // No C code required.
import "C"

import (
	"reflect"

	"testplugin/common"
)

func F() int {
	_ = make([]byte, 1<<21) // trigger stack unwind, Issue #18190.
	return 3
}

func ReadCommonX() int {
	return common.X
}

var Seven int

func call(fn func()) {
	fn()
}

func g() {
	common.X *= Seven
}

func init() {
	Seven = 7
	call(g)
}

// license that can be found in the LICENSE file.

package main

// // No C code required.
import "C"

import "testplugin/common"

func F() int { return 17 }

var FuncVar = func() {}

func ReadCommonX() int {
	FuncVar()
	return common.X
}

func main() {
	panic("plugin1.main called")

// The common package imported here does not match the common package
// imported by plugin1. A program that attempts to load plugin1 and
// plugin-mismatch should produce an error.
import "testplugin/common"

func ReadCommonX() int {
	return common.X