From e04d3fa882e7829fc2b1d174a28e4e3640306696 Mon Sep 17 00:00:00 2001
From: Jesse Wilson <jesse@swank.ca>
Date: Thu, 4 Aug 2011 23:53:10 +0000
Subject: [PATCH] Don't look for instance fields on interfaces.

---
 .../com/google/gson/internal/bind/ReflectiveTypeAdapter.java  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gson/src/main/java/com/google/gson/internal/bind/ReflectiveTypeAdapter.java b/gson/src/main/java/com/google/gson/internal/bind/ReflectiveTypeAdapter.java
index 351ea4d9..a036b357 100644
--- a/gson/src/main/java/com/google/gson/internal/bind/ReflectiveTypeAdapter.java
+++ b/gson/src/main/java/com/google/gson/internal/bind/ReflectiveTypeAdapter.java
@@ -166,6 +166,10 @@ public final class ReflectiveTypeAdapter<T> extends TypeAdapter<T>  {
     private Map<String, BoundField> getBoundFields(
         MiniGson context, TypeToken<?> type, Class<?> raw) {
       Map<String, BoundField> result = new LinkedHashMap<String, BoundField>();
+      if (raw.isInterface()) {
+        return result;
+      }
+
       Type declaredType = type.getType();
       while (raw != Object.class) {
         Field[] fields = raw.getDeclaredFields();