diff --git a/plan9/syscall_plan9.go b/plan9/syscall_plan9.go
index 84e14714..723b1f40 100644
--- a/plan9/syscall_plan9.go
+++ b/plan9/syscall_plan9.go
@@ -132,8 +132,10 @@ func Pipe(p []int) (err error) {
 	}
 	var pp [2]int32
 	err = pipe(&pp)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return
 }
 
diff --git a/unix/syscall_aix.go b/unix/syscall_aix.go
index 6192750c..4f55c8d9 100644
--- a/unix/syscall_aix.go
+++ b/unix/syscall_aix.go
@@ -519,8 +519,10 @@ func Pipe(p []int) (err error) {
 	}
 	var pp [2]_C_int
 	err = pipe(&pp)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return
 }
 
diff --git a/unix/syscall_darwin.go b/unix/syscall_darwin.go
index 8826f414..0eaab913 100644
--- a/unix/syscall_darwin.go
+++ b/unix/syscall_darwin.go
@@ -159,8 +159,10 @@ func Pipe(p []int) (err error) {
 	}
 	var x [2]int32
 	err = pipe(&x)
-	p[0] = int(x[0])
-	p[1] = int(x[1])
+	if err == nil {
+		p[0] = int(x[0])
+		p[1] = int(x[1])
+	}
 	return
 }
 
diff --git a/unix/syscall_dragonfly.go b/unix/syscall_dragonfly.go
index 5af108a5..2e37c316 100644
--- a/unix/syscall_dragonfly.go
+++ b/unix/syscall_dragonfly.go
@@ -101,7 +101,10 @@ func Pipe(p []int) (err error) {
 	if len(p) != 2 {
 		return EINVAL
 	}
-	p[0], p[1], err = pipe()
+	r, w, err := pipe()
+	if err == nil {
+		p[0], p[1] = r, w
+	}
 	return
 }
 
@@ -114,7 +117,10 @@ func Pipe2(p []int, flags int) (err error) {
 	var pp [2]_C_int
 	// pipe2 on dragonfly takes an fds array as an argument, but still
 	// returns the file descriptors.
-	p[0], p[1], err = pipe2(&pp, flags)
+	r, w, err := pipe2(&pp, flags)
+	if err == nil {
+		p[0], p[1] = r, w
+	}
 	return err
 }
 
diff --git a/unix/syscall_freebsd.go b/unix/syscall_freebsd.go
index 18c392cf..2f650ae6 100644
--- a/unix/syscall_freebsd.go
+++ b/unix/syscall_freebsd.go
@@ -110,8 +110,10 @@ func Pipe2(p []int, flags int) error {
 	}
 	var pp [2]_C_int
 	err := pipe2(&pp, flags)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return err
 }
 
diff --git a/unix/syscall_linux.go b/unix/syscall_linux.go
index 4bc5baf7..f432b068 100644
--- a/unix/syscall_linux.go
+++ b/unix/syscall_linux.go
@@ -131,8 +131,10 @@ func Pipe2(p []int, flags int) error {
 	}
 	var pp [2]_C_int
 	err := pipe2(&pp, flags)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return err
 }
 
diff --git a/unix/syscall_netbsd.go b/unix/syscall_netbsd.go
index 853d5f0f..4e06c0b3 100644
--- a/unix/syscall_netbsd.go
+++ b/unix/syscall_netbsd.go
@@ -128,8 +128,10 @@ func Pipe2(p []int, flags int) error {
 	}
 	var pp [2]_C_int
 	err := pipe2(&pp, flags)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return err
 }
 
diff --git a/unix/syscall_openbsd.go b/unix/syscall_openbsd.go
index 22b55038..11b1d419 100644
--- a/unix/syscall_openbsd.go
+++ b/unix/syscall_openbsd.go
@@ -87,8 +87,10 @@ func Pipe2(p []int, flags int) error {
 	}
 	var pp [2]_C_int
 	err := pipe2(&pp, flags)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return err
 }
 
diff --git a/unix/syscall_solaris.go b/unix/syscall_solaris.go
index 8b88ac21..5c813921 100644
--- a/unix/syscall_solaris.go
+++ b/unix/syscall_solaris.go
@@ -66,8 +66,10 @@ func Pipe(p []int) (err error) {
 	if n != 0 {
 		return err
 	}
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return nil
 }
 
@@ -79,8 +81,10 @@ func Pipe2(p []int, flags int) error {
 	}
 	var pp [2]_C_int
 	err := pipe2(&pp, flags)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return err
 }
 
diff --git a/unix/syscall_zos_s390x.go b/unix/syscall_zos_s390x.go
index 5fb76a14..f8616f45 100644
--- a/unix/syscall_zos_s390x.go
+++ b/unix/syscall_zos_s390x.go
@@ -579,8 +579,10 @@ func Pipe(p []int) (err error) {
 	}
 	var pp [2]_C_int
 	err = pipe(&pp)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return
 }