// issue10260
// Check that error messages explain reason for interface assignment failures.
type (
	I0 interface{}
	I1 interface{ foo() }
	I2 interface{ foo(x int) }
	T0 struct{}
	T1 struct{}
	T2 struct{}
)

func (*T1) foo() {}
func (*T2) foo(x int) {}

func issue10260() {
	var (
		i0 I0
		i1 I1
		i2 I2
		t0 *T0

	//
	// Brittle: the assertion may fail spuriously when the algorithm
	// changes, but should remain stable otherwise.
	got := fmt.Sprintf("%T %T", in, opts)
	want := "issue9026._Ctype_struct___0 *issue9026._Ctype_struct___1"
	if got != want {
		t.Errorf("Non-deterministic type names: got %s, want %s", got, want)
	}

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

// Issue 20266: use -I with a relative path.

package cgotest

/*
#cgo CFLAGS: -I issue20266 -Iissue20266 -Ddef20266
#include "issue20266.h"
*/
import "C"

import "testing"

func test20266(t *testing.T) {
	if got, want := C.issue20266, 20266; got != want {
		t.Errorf("got %d, want %d", got, want)
	}

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

//go:build cgo

package cgotest

import (
	"testing"

	"cmd/cgo/internal/test/issue9026"
)

// Copyright 2017 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.

#define issue20266 20266

#ifndef def20266
#error "expected def20266 to be defined"

// errorcheckoutput mechanism.

package main

import (
	"io/ioutil"
	"log"
	"os"
	"os/exec"
	"strings"
)

func main() {
	// create source
	f, err := ioutil.TempFile("", "issue13268-")
	if err != nil {
		log.Fatalf("could not create source file: %v", err)
	}
	f.Write([]byte("package p\n\nfunc \xef\xef")) // if this fails, we will die later
	f.Close()
	defer os.Remove(f.Name())

Dmitri Shuralyov <******@****.***> 1697569678 -0400

Emmanuel Odeke <******@****.***> 1460323946 -0700

Emmanuel Odeke <******@****.***> 1460323946 -0700

Matthew Dempsky <******@****.***> 1475100240 -0700