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319b75ed33
Fixes #58141 Co-authored-by: Richard Musiol <neelance@gmail.com> Co-authored-by: Achille Roussel <achille.roussel@gmail.com> Co-authored-by: Julien Fabre <ju.pryz@gmail.com> Co-authored-by: Evan Phoenix <evan@phx.io> Change-Id: I49b66946acc90fdf09ed9223096bfec9a1e5b923 Reviewed-on: https://go-review.googlesource.com/c/go/+/479627 Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Bypass: Ian Lance Taylor <iant@golang.org>
62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
// run
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//go:build !js && !wasip1
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// +build !js,!wasip1
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Issue 52127: Too many syntax errors in many files can
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// cause deadlocks instead of displaying error messages
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// correctly.
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package main
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import (
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"bytes"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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)
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func main() {
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dir, err := os.MkdirTemp("", "issue52127")
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if err != nil {
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panic(err)
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}
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defer os.RemoveAll(dir)
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args := []string{"go", "build"}
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write := func(prefix string, i int, data string) {
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filename := filepath.Join(dir, fmt.Sprintf("%s%d.go", prefix, i))
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if err := os.WriteFile(filename, []byte(data), 0o644); err != nil {
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panic(err)
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}
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args = append(args, filename)
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}
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for i := 0; i < 100; i++ {
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write("a", i, `package p
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`)
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}
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for i := 0; i < 100; i++ {
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write("b", i, `package p
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var
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var
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var
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var
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var
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`)
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}
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cmd := exec.Command(args[0], args[1:]...)
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output, err := cmd.CombinedOutput()
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if err == nil {
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panic("compile succeeded unexpectedly")
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}
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if !bytes.Contains(output, []byte("syntax error:")) {
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panic(fmt.Sprintf(`missing "syntax error" in compiler output; got:
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%s`, output))
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}
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} |