---

yaml
---
r: 182339
b: refs/heads/beta
c: 0478a8c
h: refs/heads/master
i:
  182337: 38cf07e
  182335: 34564f8
v: v3

Author: Oliver 'ker' Schneider

[refs]

@@ -31,7 +31,7 @@ refs/heads/automation-fail: 1bf06495443584539b958873e04cc2f864ab10e4
 refs/heads/issue-18208-method-dispatch-3-quick-reject: 2009f85b9f99dedcec4404418eda9ddba90258a2
 refs/heads/batch: b7fd822592a4fb577552d93010c4a4e14f314346
 refs/heads/building: 126db549b038c84269a1e4fe46f051b2c15d6970
-refs/heads/beta: d727f9910729625039defffd4058b907ca984bb9
+refs/heads/beta: 0478a8c1d73ab936bcfb762ce8f31ab9f642f462
 refs/heads/windistfix: 7608dbad651f02e837ed05eef3d74a6662a6e928
 refs/tags/1.0.0-alpha: e42bd6d93a1d3433c486200587f8f9e12590a4d7
 refs/heads/tmp: eb836bf767aa1d8d4cba488a9091cde3c0ab4b2f

branches/beta/src/libserialize/json.rs

@@ -2583,7 +2583,7 @@ mod tests {
     use super::DecoderError::*;
     use super::JsonEvent::*;
     use super::{Json, from_str, DecodeResult, DecoderError, JsonEvent, Parser,
-                StackElement, Stack, Decoder};
+                StackElement, Stack, Decoder, Encoder, EncoderError};
     use std::{i64, u64, f32, f64, io};
     use std::collections::BTreeMap;
     use std::num::Float;
@@ -3892,6 +3892,25 @@ mod tests {
         assert_eq!(None::<int>.to_json(), Null);
     }
 
+    #[test]
+    fn test_encode_hashmap_with_arbitrary_key() {
+        use std::str::from_utf8;
+        use std::io::Writer;
+        use std::collections::HashMap;
+        use std::fmt;
+        #[derive(PartialEq, Eq, Hash, RustcEncodable)]
+        struct ArbitraryType(uint);
+        let mut hm: HashMap<ArbitraryType, bool> = HashMap::new();
+        hm.insert(ArbitraryType(1), true);
+        let mut mem_buf = Vec::new();
+        let mut encoder = Encoder::new(&mut mem_buf as &mut fmt::Writer);
+        let result = hm.encode(&mut encoder);
+        match result.unwrap_err() {
+            EncoderError::BadHashmapKey => (),
+            _ => panic!("expected bad hash map key")
+        }
+    }
+
     #[bench]
     fn bench_streaming_small(b: &mut Bencher) {
         b.iter( || {