4 files changed, 23 insertions, 5 deletions
diff --git a/include/salticidae/conn.h b/include/salticidae/conn.h
index 4cc8b11..d93f787 100644
--- a/include/salticidae/conn.h
+++ b/include/salticidae/conn.h
@@ -136,7 +136,7 @@ class SegBuffer {
     }
 };
 
-class ConnPoolError: public SalticidaeError {
+struct ConnPoolError: public SalticidaeError {
     using SalticidaeError::SalticidaeError;
 };
 
diff --git a/include/salticidae/network.h b/include/salticidae/network.h
index ec112ad..4e966d1 100644
--- a/include/salticidae/network.h
+++ b/include/salticidae/network.h
@@ -207,8 +207,8 @@ class ClientNetwork: public MsgNetwork<OpcodeType> {
     void send_msg(const MsgType &msg, const NetAddr &addr);
 };
 
-class PeerNetworkError: public SalticidaeError {
-    using SalticidaeError::SalticidaeError;
+class PeerNetworkError: public ConnPoolError {
+    using ConnPoolError::ConnPoolError;
 };
 
 /** Peer-to-peer network where any two nodes could hold a bi-diretional message
diff --git a/include/salticidae/ref.h b/include/salticidae/ref.h
index f97bd43..44eb01e 100644
--- a/include/salticidae/ref.h
+++ b/include/salticidae/ref.h
@@ -171,7 +171,7 @@ struct _RCCtl {
 struct _ARCCtl {
     std::atomic_size_t ref_cnt;
     std::atomic_size_t weak_cnt;
-    std::atomic_uint8_t dcnt;
+    std::atomic<std::uint8_t> dcnt;
     void add_ref() { ref_cnt++; }
     void add_weak() { weak_cnt++; }
     bool release_ref() {
diff --git a/include/salticidae/util.h b/include/salticidae/util.h
index 39a3683..4e6825a 100644
--- a/include/salticidae/util.h
+++ b/include/salticidae/util.h
@@ -52,7 +52,25 @@ class SalticidaeError: public std::exception {
     std::string msg;
     public:
     SalticidaeError();
-    SalticidaeError(const std::string &fmt, ...);
+
+    template<typename... Args>
+    SalticidaeError(const std::string &fmt, Args... args) {
+        int guessed_size = 128;
+        std::string buff;
+        for (;;)
+        {
+            buff.resize(guessed_size);
+            int nwrote = snprintf((char *)buff.data(), guessed_size, fmt.c_str(), args...);
+            if (nwrote < 0 || nwrote == guessed_size)
+            {
+                guessed_size <<= 1;
+                continue;
+            }
+            buff.resize(nwrote);
+            msg = std::move(buff);
+            break;
+        }
+    }
 
     operator std::string() const { return msg; }
     const char *what() const throw() override { return msg.c_str(); }