set the error indicator on malloc(3) failure;

from Andrey Chernov <ache at freebsd dot org>;
OK millert@

diff --git a/lib/libc/stdio/fgetwln.c b/lib/libc/stdio/fgetwln.c
index 37fcf3a..2ee7e8d 100644 (file)
--- 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;