[release-branch.go1.15] syscall: use MustHaveExec in TestExec

For #41702
For #41704

Change-Id: Ib2b15e52aa1fef2f5e644b316c726150252fa9f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/262738
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
(cherry picked from commit 11cfb48df192c14d185c1cfcaad1ba3e7b84c807)
Reviewed-on: https://go-review.googlesource.com/c/go/+/264020

diff --git a/src/syscall/exec_unix_test.go b/src/syscall/exec_unix_test.go
index d005bba610ea7d213c7963d61dd59ce8cc5f29a3..4431f7fc90095dacad1c2cec5fd36886b9318891 100644 (file)
--- a/src/syscall/exec_unix_test.go
+++ b/src/syscall/exec_unix_test.go
@@ -247,6 +247,7 @@ func TestInvalidExec(t *testing.T) {
 
 // TestExec is for issue #41702.
 func TestExec(t *testing.T) {
+       testenv.MustHaveExec(t)
        cmd := exec.Command(os.Args[0], "-test.run=TestExecHelper")
        cmd.Env = append(os.Environ(), "GO_WANT_HELPER_PROCESS=2")
        o, err := cmd.CombinedOutput()