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// run
//go:build gc
// Copyright 2015 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.
// Test error message when EOF is encountered in the
// middle of a BOM.
//
// Since the error requires an EOF, we cannot use the
// 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())
// compile and test output
cmd := exec.Command("go", "tool", "compile", f.Name())
out, err := cmd.CombinedOutput()
if err == nil {
log.Fatalf("expected cmd/compile to fail")
}
if strings.HasPrefix(string(out), "illegal UTF-8 sequence") {
log.Fatalf("error %q not found", out)
}
}