blob: 09c896463e4df378737dcf20913ce3e47bb63032 [file] [log] [blame]
// Copyright 2022 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 testmode
package internal
import (
"bytes"
"fmt"
"os"
"os/exec"
)
// GoVersion returns the current Go version obtained by go env GOVERSION.
//
// For debugging and testing purposes, undocumented environment variable
// TEST_GOVERSION can be used instead.
func GoVersion() string {
if v := os.Getenv("TEST_GOVERSION"); v != "" {
// Unlikely to happen in practice, mostly used for testing.
return v
}
out, err := exec.Command("go", "env", "GOVERSION").Output()
if err != nil {
fmt.Fprintf(os.Stderr, "failed to determine go version; skipping stdlib scanning: %v\n", err)
return ""
}
return string(bytes.TrimSpace(out))
}