Index: zeromq3-4.3.3/tests/testutil.cpp
===================================================================
--- zeromq3-4.3.3.orig/tests/testutil.cpp
+++ zeromq3-4.3.3/tests/testutil.cpp
@@ -480,10 +480,14 @@ fd_t bind_socket_resolve_port (const cha
         TEST_ASSERT_SUCCESS_RAW_ERRNO (_mkdir (buffer));
         strcat (buffer, "/ipc");
 #else
-        char buffer[PATH_MAX] = "";
-        strcpy (buffer, "tmpXXXXXX");
+        char *buffer = NULL;
+        size_t len = 10;
+        buffer = (char*) malloc(len);
+        strncpy (buffer, "tmpXXXXXX", len);
 #ifdef HAVE_MKDTEMP
         TEST_ASSERT_TRUE (mkdtemp (buffer));
+        len += 7;
+        buffer = (char *)realloc (buffer, len);
         strcat (buffer, "/socket");
 #else
         int fd = mkstemp (buffer);
@@ -491,12 +495,17 @@ fd_t bind_socket_resolve_port (const cha
         close (fd);
 #endif
 #endif
+        len += strlen((*(struct sockaddr_un *) &addr).sun_path);
+        buffer = (char *)realloc (buffer, len);
         strcpy ((*(struct sockaddr_un *) &addr).sun_path, buffer);
         memcpy (my_endpoint_, "ipc://", 7);
-        strcat (my_endpoint_, buffer);
+        len += strlen(my_endpoint_);
+        buffer = (char *)realloc (buffer, len);
+        strncat (my_endpoint_, buffer, len);
 
         // TODO check return value of unlink
         unlink (buffer);
+        free (buffer);
 #else
         return retired_fd;
 #endif