| // 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. |
| |
| //go:build ignore |
| |
| package main |
| |
| import ( |
| "bytes" |
| "fmt" |
| "internal/trace/raw" |
| "internal/trace/version" |
| "io" |
| "log" |
| "os" |
| "os/exec" |
| ) |
| |
| func main() { |
| // Create command. |
| var trace, stderr bytes.Buffer |
| cmd := exec.Command("go", "run", "./testprog/main.go") |
| cmd.Stdout = &trace |
| cmd.Stderr = &stderr |
| |
| // Run trace program; the trace will appear in stdout. |
| fmt.Fprintln(os.Stderr, "running trace program...") |
| if err := cmd.Run(); err != nil { |
| log.Fatalf("running trace program: %v:\n%s", err, stderr.String()) |
| } |
| |
| // Create file. |
| f, err := os.Create(fmt.Sprintf("./go1%d.test", version.Current)) |
| if err != nil { |
| log.Fatalf("creating output file: %v", err) |
| } |
| defer f.Close() |
| |
| // Write out the trace. |
| r, err := raw.NewReader(&trace) |
| if err != nil { |
| log.Fatalf("reading trace: %v", err) |
| } |
| w, err := raw.NewTextWriter(f, version.Current) |
| for { |
| ev, err := r.ReadEvent() |
| if err == io.EOF { |
| break |
| } |
| if err != nil { |
| log.Fatalf("reading trace: %v", err) |
| } |
| if err := w.WriteEvent(ev); err != nil { |
| log.Fatalf("writing trace: %v", err) |
| } |
| } |
| } |