4.2 can't parse the jsonObject in jsonArray

[yuanhaoliang]

#include <ArduinoJson.h>

void setup() {
  Serial.begin(9600);
  delay(2000);
  StaticJsonBuffer<200> jsonBuffer;

  char json[] =
      "{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[{\"a\":48.756080,\"b\":2.302038}]}";

  JsonObject& root = jsonBuffer.parseObject(json);

  if (!root.success()) {
    Serial.println("parseObject() failed");
    return;
  }

  const char* sensor = root["sensor"];
  long time = root["time"];
  JsonArray& array = root["data"];


  Serial.println(sensor);
  Serial.println(time);
  Serial.println(array.size());
}

void loop() {
  // not used in this example
}

array.size() is 0.
It seems parse fail,but no error occur.

[yuanhaoliang]

maybe the size 200 for StaticJsonBuffer is too small. The size up to 2000 is OK!