diff -Naupr zziplib-0.13.49.orig/zzip/file.c zziplib-0.13.49/zzip/file.c
--- zziplib-0.13.49.orig/zzip/file.c	2007-03-18 16:20:12.000000000 +0100
+++ zziplib-0.13.49/zzip/file.c	2007-08-23 11:17:34.000000000 +0200
@@ -713,7 +713,7 @@ zzip_open_shared_io (ZZIP_FILE* stream,
     {   
 	zzip_plugin_io_t os = (o_modes & ZZIP_ALLOWREAL)
 	    ?  zzip_get_default_io () : io;
-	int fd = os->fd.open(filename, o_flags); /* io->fd.open */
+	int fd = (os->fd.open)(filename, o_flags); /* io->fd.open */
         if (fd != -1)
         {
             ZZIP_FILE* fp = calloc (1, sizeof(ZZIP_FILE));
diff -Naupr zziplib-0.13.49.orig/zzip/write.c zziplib-0.13.49/zzip/write.c
--- zziplib-0.13.49.orig/zzip/write.c	2007-03-18 16:22:11.000000000 +0100
+++ zziplib-0.13.49/zzip/write.c	2007-08-23 11:17:46.000000000 +0200
@@ -163,7 +163,7 @@ zzip_dir_creat_ext_io(zzip_char_t* name,
             if (! (exx_len = strlen (*exx)) || exx_len >= MAX_EXT_LEN) break; 
             memcpy (dir->realname+name_len, exx, exx_len); /* append! */
         }____;
-        fd  = io->fd.open (dir->realname, O_CREAT|O_TRUNC|O_WRONLY, o_mode);
+        fd  = (io->fd.open)(dir->realname, O_CREAT|O_TRUNC|O_WRONLY, o_mode);
         dir->realname[name_len] = '\0'; /* keep ummodified */
         if (fd != -1) { dir->fd = fd; return dir; } 
      error:
diff -Naupr zziplib-0.13.49.orig/zzip/zip.c zziplib-0.13.49/zzip/zip.c
--- zziplib-0.13.49.orig/zzip/zip.c	2007-03-18 16:27:49.000000000 +0100
+++ zziplib-0.13.49/zzip/zip.c	2007-08-23 11:17:22.000000000 +0200
@@ -688,7 +688,7 @@ __zzip_try_open(zzip_char_t* filename, i
     for ( ; *ext ; ++ext)
     {
         strcpy (file+len, *ext);
-        fd = io->fd.open(file, filemode);
+        fd = (io->fd.open)(file, filemode);
         if (fd != -1) return fd;
     }
     return -1;
@@ -718,7 +718,7 @@ zzip_dir_open_ext_io(zzip_char_t* filena
     if (! io) io = zzip_get_default_io();
     if (! ext) ext = zzip_get_default_ext();
 
-    fd = io->fd.open(filename, O_RDONLY|O_BINARY);
+    fd = (io->fd.open)(filename, O_RDONLY|O_BINARY);
     if (fd != -1) { 
 	return zzip_dir_fdopen_ext_io(fd, e, ext, io); 
     } else