--- Libc/Libc-1725.40.4/stdio/FreeBSD/rewind.c
+++ Libc/Libc-825.26/stdio/FreeBSD/rewind.c
@@ -49,7 +49,8 @@
 	int serrno = errno;
 
 	/* make sure stdio is set up */
-	pthread_once(&__sdidinit, __sinit);
+	if (!__sdidinit)
+		__sinit();
 
 	FLOCKFILE(fp);
 	if (_fseeko(fp, (off_t)0, SEEK_SET, 1) == 0) {