--- src/lib/libc/stdio/findfp.c	2005/11/20 11:07:30	1.10
+++ src/lib/libc/stdio/findfp.c	2006/03/02 18:05:30	1.11
@@ -169,6 +169,7 @@ found:
 	fp->fl_mutex = PTHREAD_MUTEX_INITIALIZER;
 	fp->fl_owner = NULL;
 	fp->fl_count = 0;
+	memset(WCIO_GET(fp), 0, sizeof(struct wchar_io_data));
 	/* fp->_lock = NULL; */
 	return (fp);
 }