From: Roland Shoemaker <roland@golang.org>
Date: Tue, 19 Jan 2021 17:59:24 +0000 (-0800)
Subject: [release-branch.go1.15-security] cmd/go: overwrite program name with full path
X-Git-Tag: go1.15.7~1
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=14936d407aba84b76ec77b14f4697b31f0ac05aa;p=gostls13.git

[release-branch.go1.15-security] cmd/go: overwrite program name with full path

If the program path is resolved, replace the first argument of the
exec.Cmd, which is the bare program name with the resolved path.

Change-Id: I92cf5e6f4bb7c8fef9b59f5eab963f4e75b90d07
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/957908
Reviewed-by: Katie Hockman <katiehockman@google.com>
Reviewed-by: Russ Cox <rsc@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
(cherry picked from commit a863cb56b33a24aad88f23f1d48629dc4b4b9539)
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/958254
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
---

diff --git a/src/cmd/go/internal/work/exec.go b/src/cmd/go/internal/work/exec.go
index 072162a26c..f5f9951afa 100644
--- a/src/cmd/go/internal/work/exec.go
+++ b/src/cmd/go/internal/work/exec.go
@@ -1953,6 +1953,9 @@ func (b *Builder) runOut(a *Action, dir string, env []string, cmdargs ...interfa
 
 	var buf bytes.Buffer
 	cmd := exec.Command(cmdline[0], cmdline[1:]...)
+	if cmd.Path != "" {
+		cmd.Args[0] = cmd.Path
+	}
 	cmd.Stdout = &buf
 	cmd.Stderr = &buf
 	cleanup := passLongArgsInResponseFiles(cmd)