Index: lib/filesys.cpp
===================================================================
--- lib/filesys.cpp.orig
+++ lib/filesys.cpp
@@ -46,6 +46,7 @@
 #include <sys/time.h>
 #include <unistd.h>
 #include <dirent.h>
+#include <climits>
 
 #ifdef HAVE_SYS_RESOURCE_H
 #include <sys/resource.h>
@@ -400,7 +401,8 @@ int dir_size(const char* dirpath, double
     } while (FindNextFileA(hFind, &findData));
 	::FindClose(hFind);
 #else
-    char filename[256], subdir[256];
+    char filename[PATH_MAX];
+    char *subdir;
     int retval=0;
     DIRREF dirp;
     double x;
@@ -411,7 +413,7 @@ int dir_size(const char* dirpath, double
     while (1) {
         retval = dir_scan(filename, dirp, sizeof(filename));
         if (retval) break;
-        sprintf(subdir, "%s/%s", dirpath, filename);
+        asprintf(&subdir, "%s/%s", dirpath, filename);
 
         if (is_dir(subdir)) {
             if (recurse) {
@@ -424,6 +426,9 @@ int dir_size(const char* dirpath, double
             if (retval) continue;
             size += x;
         }
+
+        if(subdir != NULL)
+            free(subdir);
     }
     dir_close(dirp);
 #endif