From 09eefa9f988a3d5ab04ad5722982447d7a7d3c97 Mon Sep 17 00:00:00 2001
From: schwarze <schwarze@openbsd.org>
Date: Wed, 24 Aug 2016 18:35:12 +0000
Subject: [PATCH] set the error indicator on malloc(3) failure; from Andrey
 Chernov <ache at freebsd dot org>; OK millert@

---
 lib/libc/stdio/fgetwln.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/libc/stdio/fgetwln.c b/lib/libc/stdio/fgetwln.c
index 37fcf3a1aee..2ee7e8d61e6 100644
--- a/lib/libc/stdio/fgetwln.c
+++ b/lib/libc/stdio/fgetwln.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fgetwln.c,v 1.2 2016/08/21 21:10:52 schwarze Exp $	*/
+/*	$OpenBSD: fgetwln.c,v 1.3 2016/08/24 18:35:12 schwarze Exp $	*/
 
 /*-
  * Copyright (c) 2002-2004 Tim J. Robbins.
@@ -61,8 +61,10 @@ fgetwln(FILE * __restrict fp, size_t *lenp)
 	while ((wc = __fgetwc_unlock(fp)) != WEOF) {
 #define	GROW	512
 		if (len >= fp->_lb._size / sizeof(wchar_t) &&
-		    __slbexpand(fp, len + GROW))
+		    __slbexpand(fp, len + GROW)) {
+			fp->_flags |= __SERR;
 			goto error;
+		}
 		*((wchar_t *)fp->_lb._base + len++) = wc;
 		if (wc == L'\n')
 			break;
-- 
2.20.1