diff --git a/src/syscall/exec_unix_test.go b/src/syscall/exec_unix_test.go
index 643c2e97891..866671ba2ac 100644
--- a/src/syscall/exec_unix_test.go
+++ b/src/syscall/exec_unix_test.go
@@ -214,10 +214,9 @@ func TestForeground(t *testing.T) {
 
 	cmd.Stop()
 
-	errno = syscall.Ioctl(tty.Fd(), syscall.TIOCSPGRP, uintptr(unsafe.Pointer(&fpgrp)))
-	if errno != 0 {
-		t.Fatalf("TIOCSPGRP failed with error code: %s", errno)
-	}
+	// This call fails on darwin/arm64. The failure doesn't matter, though.
+	// This is just best effort.
+	syscall.Ioctl(tty.Fd(), syscall.TIOCSPGRP, uintptr(unsafe.Pointer(&fpgrp)))
 }
 
 func TestForegroundSignal(t *testing.T) {
@@ -227,14 +226,34 @@ func TestForegroundSignal(t *testing.T) {
 	}
 	defer tty.Close()
 
+	// This should really be pid_t, however _C_int (aka int32) is generally
+	// equivalent.
+	fpgrp := int32(0)
+
+	errno := syscall.Ioctl(tty.Fd(), syscall.TIOCGPGRP, uintptr(unsafe.Pointer(&fpgrp)))
+	if errno != 0 {
+		t.Fatalf("TIOCGPGRP failed with error code: %s", errno)
+	}
+
+	if fpgrp == 0 {
+		t.Fatalf("Foreground process group is zero")
+	}
+
+	defer func() {
+		signal.Ignore(syscall.SIGTTIN, syscall.SIGTTOU)
+		syscall.Ioctl(tty.Fd(), syscall.TIOCSPGRP, uintptr(unsafe.Pointer(&fpgrp)))
+		signal.Reset()
+	}()
+
 	ch1 := make(chan os.Signal, 1)
 	ch2 := make(chan bool)
 
 	signal.Notify(ch1, syscall.SIGTTIN, syscall.SIGTTOU)
 	defer signal.Stop(ch1)
 
+	cmd := create(t)
+
 	go func() {
-		cmd := create(t)
 		cmd.proc.SysProcAttr = &syscall.SysProcAttr{
 			Ctty:       int(tty.Fd()),
 			Foreground: true,