Fix exceptions on encoding list or dict elements and non-overflow err…

…ors on int handling getting silenced

Fixes #273

lib/ultrajsonenc.c

@@ -656,6 +656,11 @@ static void encode(JSOBJ obj, JSONObjectEncoder *enc, const char *name, size_t c
   {
     case JT_INVALID:
     {
+      /*
+      There should already be an exception at the Python level.
+      This however sets the errorMsg so recursion on arrays and objects stops.
+      */
+      SetError (obj, enc, "Invalid type");
       return;
     }
 
@@ -681,6 +686,10 @@ static void encode(JSOBJ obj, JSONObjectEncoder *enc, const char *name, size_t c
         enc->level ++;
         Buffer_AppendIndentUnchecked (enc, enc->level);
         encode (iterObj, enc, NULL, 0);
+        if (enc->errorMsg)
+        {
+          return;
+        }
         count ++;
       }
 
@@ -725,6 +734,10 @@ static void encode(JSOBJ obj, JSONObjectEncoder *enc, const char *name, size_t c
         enc->level ++;
         Buffer_AppendIndentUnchecked (enc, enc->level);
         encode (iterObj, enc, objName, szlen);
+        if (enc->errorMsg)
+        {
+          return;
+        }
         count ++;
       }
 

python/objToJSON.c

@@ -505,12 +505,18 @@ static void Object_beginTypeContext (JSOBJ _obj, JSONTypeContext *tc, JSONObject
       GET_TC(tc)->unsignedLongValue = PyLong_AsUnsignedLongLong(obj);
 
       exc = PyErr_Occurred();
-      if (exc && PyErr_ExceptionMatches(PyExc_OverflowError))
+      if (exc)
       {
         PRINTMARK();
         goto INVALID;
       }
     }
+    else
+    if (exc)
+    {
+      PRINTMARK();
+      goto INVALID;
+    }
 
     return;
   }

tests/test_ujson.py

@@ -659,6 +659,10 @@ def test_dumps_raises(test_input, expected_exception, expected_message):
         (float("inf"), OverflowError),
         (-float("inf"), OverflowError),
         (12839128391289382193812939, OverflowError),
+        ([12839128391289382193812939], OverflowError),
+        ([12839128391289382193812939, 42], OverflowError),
+        ({"a": 12839128391289382193812939}, OverflowError),
+        ({"a": 12839128391289382193812939, "b": 42}, OverflowError),
     ],
 )
 def test_encode_raises_allow_nan(test_input, expected_exception):