Merge pull request #413 from Quuxplusone/static-analysis

Various bugfixes found by compiling with extra warnings

src/ctx.cpp

@@ -353,7 +353,15 @@ zmq::endpoint_t zmq::ctx_t::find_endpoint (const char *addr_)
      return endpoint;
 }
 
-void zmq::ctx_t::monitor_event (zmq::socket_base_t *socket_, int event_, va_list args_)
+void zmq::ctx_t::monitor_event (zmq::socket_base_t *socket_, int event_, ...)
+{
+    va_list args;
+    va_start (event_, args);
+    va_monitor_event (socket_, event_, args);
+    va_end (args);
+}
+
+void zmq::ctx_t::va_monitor_event (zmq::socket_base_t *socket_, int event_, va_list args_)
 {
     if (monitor_fn != NULL) {
         zmq_event_data_t data;

src/ctx.hpp

@@ -97,7 +97,8 @@ namespace zmq
 
         // Monitoring specific
         int monitor (zmq_monitor_fn *monitor_);
-        void monitor_event (zmq::socket_base_t *socket_, int event_, va_list args_);
+        void monitor_event (zmq::socket_base_t *socket_, int event_, ...);
+        void va_monitor_event (zmq::socket_base_t *socket_, int event_, va_list args_);
 
         enum {
             term_tid = 0,

src/fd.hpp

@@ -35,7 +35,7 @@ namespace zmq
     enum {retired_fd = (fd_t)(~0)};
 #else
     typedef SOCKET fd_t;
-    enum {retired_fd = INVALID_SOCKET};
+    enum {retired_fd = (fd_t)INVALID_SOCKET};
 #endif
 #else
     typedef int fd_t;

src/pipe.cpp

@@ -190,7 +190,7 @@ void zmq::pipe_t::rollback ()
 void zmq::pipe_t::flush ()
 {
     //  If terminate() was already called do nothing.
-    if (state == terminated && state == double_terminated)
+    if (state == terminated || state == double_terminated)
         return;
 
     //  The peer does not exist anymore at this point.

src/session_base.cpp

@@ -290,10 +290,15 @@ void zmq::session_base_t::monitor_event (int event_, ...)
 {
     va_list args;
     va_start (args, event_);
-    socket->monitor_event (event_, args);
+    va_monitor_event (event_, args);
     va_end (args);
 }
 
+void zmq::session_base_t::va_monitor_event (int event_, va_list args)
+{
+    socket->va_monitor_event (event_, args);
+}
+
 void zmq::session_base_t::process_plug ()
 {
     if (connect)

src/session_base.hpp

@@ -24,6 +24,7 @@
 #define __ZMQ_SESSION_BASE_HPP_INCLUDED__
 
 #include <string>
+#include <stdarg.h>
 
 #include "own.hpp"
 #include "io_object.hpp"
@@ -67,6 +68,7 @@ namespace zmq
         void terminated (zmq::pipe_t *pipe_);
 
         void monitor_event (int event_, ...);
+        void va_monitor_event (int event_, va_list args);
 
     protected:
 

src/socket_base.cpp

@@ -1001,6 +1001,11 @@ void zmq::socket_base_t::monitor_event (int event_, ...)
 {
     va_list args;
     va_start (args, event_);
-    get_ctx ()->monitor_event (this, event_, args);
+    va_monitor_event(event, args);
     va_end (args);
 }
+
+void zmq::socket_base_t::monitor_event (int event_, va_list args)
+{
+    get_ctx ()->va_monitor_event (this, event_, args);
+}

src/socket_base.hpp

@@ -25,6 +25,7 @@
 
 #include <string>
 #include <map>
+#include <stdarg.h>
 
 #include "own.hpp"
 #include "array.hpp"
@@ -102,6 +103,7 @@ namespace zmq
         void unlock();
 
         void monitor_event (int event_, ...);
+        void va_monitor_event (int event_, va_list args);
 
     protected:
 

src/tcp_address.cpp

@@ -294,12 +294,12 @@ int zmq::tcp_address_t::resolve_interface (const char *interface_,
     }
 
     //  Use the first result.
+    zmq_assert (res != NULL);
     zmq_assert ((size_t) (res->ai_addrlen) <= sizeof (address));
     memcpy (&address, res->ai_addr, res->ai_addrlen);
 
     //  Cleanup getaddrinfo after copying the possibly referenced result.
-    if (res)
-        freeaddrinfo (res);
+    freeaddrinfo (res);
 
     return 0;
 }
@@ -598,11 +598,9 @@ const bool zmq::tcp_address_mask_t::match_address (const struct sockaddr *ss, co
         }
         if (address_mask < mask) mask = address_mask;
 
-        int full_bytes = mask / 8;
-        if (full_bytes) {
-            if (memcmp(our_bytes, their_bytes, full_bytes))
-                return false;
-        }
+        size_t full_bytes = mask / 8;
+        if (memcmp(our_bytes, their_bytes, full_bytes))
+            return false;
 
         uint8_t last_byte_bits = (0xffU << (8 - (mask % 8))) & 0xffU;
         if (last_byte_bits) {

src/zmq.cpp

@@ -486,9 +486,11 @@ int zmq_recviov (void *s_, iovec *a_, size_t *count_, int flags_)
     }
     zmq::socket_base_t *s = (zmq::socket_base_t *) s_;
 
-    size_t count = (int) *count_;
+    size_t count = *count_;
     int nread = 0;
     bool recvmore = true;
+    
+    *count_ = 0;
 
     for (size_t i = 0; recvmore && i < count; ++i) {
         // Cheat! We never close any msg