From 10fa3a64977dec30b25fba7ce6b35cbc275d0c2e Mon Sep 17 00:00:00 2001
From: Jack Christensen <jack@jackchristensen.com>
Date: Sat, 12 Aug 2017 16:40:18 -0500
Subject: [PATCH] Return error on MarshalJSON of status Undefined

Previously "undefined" was returned as a value. While this is a
valid JavaScript value, it is not valid JSON.
---
 int2.go | 2 +-
 int4.go | 2 +-
 int8.go | 2 +-
 text.go | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/int2.go b/int2.go
index 45bce93c..6156ea77 100644
--- a/int2.go
+++ b/int2.go
@@ -202,7 +202,7 @@ func (src *Int2) MarshalJSON() ([]byte, error) {
 	case Null:
 		return []byte("null"), nil
 	case Undefined:
-		return []byte("undefined"), nil
+		return nil, errUndefined
 	}
 
 	return nil, errBadStatus
diff --git a/int4.go b/int4.go
index a3499fef..37d00511 100644
--- a/int4.go
+++ b/int4.go
@@ -193,7 +193,7 @@ func (src *Int4) MarshalJSON() ([]byte, error) {
 	case Null:
 		return []byte("null"), nil
 	case Undefined:
-		return []byte("undefined"), nil
+		return nil, errUndefined
 	}
 
 	return nil, errBadStatus
diff --git a/int8.go b/int8.go
index d671eda7..17a676eb 100644
--- a/int8.go
+++ b/int8.go
@@ -179,7 +179,7 @@ func (src *Int8) MarshalJSON() ([]byte, error) {
 	case Null:
 		return []byte("null"), nil
 	case Undefined:
-		return []byte("undefined"), nil
+		return nil, errUndefined
 	}
 
 	return nil, errBadStatus
diff --git a/text.go b/text.go
index f05e1e89..e7fba682 100644
--- a/text.go
+++ b/text.go
@@ -144,7 +144,7 @@ func (src *Text) MarshalJSON() ([]byte, error) {
 	case Null:
 		return []byte("null"), nil
 	case Undefined:
-		return []byte("undefined"), nil
+		return nil, errUndefined
 	}
 
 	return nil, errBadStatus