os: fix path in MkdirTemp error message

Fixes #75012

Change-Id: I9dd3ba8987bde9db93769a1b05d13b162ba5332d
Reviewed-on: https://go-review.googlesource.com/c/go/+/696715
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Sean Liao <sean@liao.dev>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Sean Liao <sean@liao.dev>
Reviewed-by: David Chase <drchase@google.com>

diff --git a/src/os/tempfile.go b/src/os/tempfile.go
index af70b360b3a0f0ef0bb16dc0d98ce797ca1b9b4f..428dc965b7a01792e20ca2b3d02ecc0ac52a4307 100644 (file)
--- a/src/os/tempfile.go
+++ b/src/os/tempfile.go
@@ -105,7 +105,7 @@ func MkdirTemp(dir, pattern string) (string, error) {
                        if try++; try < 10000 {
                                continue
                        }
-                       return "", &PathError{Op: "mkdirtemp", Path: dir + string(PathSeparator) + prefix + "*" + suffix, Err: ErrExist}
+                       return "", &PathError{Op: "mkdirtemp", Path: prefix + "*" + suffix, Err: ErrExist}
                }
                if IsNotExist(err) {
                        if _, err := Stat(dir); IsNotExist(err) {