// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import "C"

//export GoFunc
func GoFunc() int { return 42 }

extern void GoFunc();

int main(int argc, char **argv) {
	GoFunc();

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import "C"

//export GoFunc
func GoFunc() int { return 1 }

package main

import "C"

//export GoFunc
func GoFunc() {}

go build -x -n -buildmode=c-archive -gcflags=all=-shared=false ./override.go
stderr '^.*/compile (.* )?-shared (.* )?-shared=false'

-- override.go --
package main

import "C"

//export GoFunc
func GoFunc() {}

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "libtestgo2c2go.h"

int CFunc(void) {
	return (GoFunc() << 8) + 2;

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

// #include "libtestgo2c2go.h"
import "C"

import (
	"fmt"
	"os"
)

func main() {
	got := C.GoFunc()
	const want = 1
	if got != want {
		fmt.Printf("got %#x, want %#x\n", got, want)
		os.Exit(1)
	}

// compare linknamed symbol definitions happier.
//
//go:linkname newTimer
func newTimer(when, period int64, f func(any, uintptr, int64), arg any, cp unsafe.Pointer) *Timer

//go:linkname stopTimer
func stopTimer(*Timer) bool

//go:linkname resetTimer
func resetTimer(t *Timer, when, period int64) bool

// Note: The runtime knows the layout of struct Timer, since newTimer allocates it.

		t.Fatalf("Program exited with error: %v\n%s", err, &stderr)
	}
}

func TestIssue59213(t *testing.T) {
	if runtime.GOOS != "windows" {
		t.Skip("skipping windows only test")
	}
	if *flagQuick {
		t.Skip("-quick")
	}
	testenv.MustHaveGoBuild(t)
	testenv.MustHaveCGO(t)

	goEnv := func(arg string) string {
		cmd := testenv.Command(t, testenv.GoToolPath(t), "env", arg)

}
`

const testlib = `
package mylib

{{if .}}
// int cgodata = 5;
// void cgofunc(void) {}
import "C"

var TestCgodata = C.cgodata

func TestCgofunc() {
	C.cgofunc()
}
{{end}}

var Testdata uint32

func Testfunc() {}