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authorchristos <christos@NetBSD.org>2021-07-08 15:44:44 +0000
committerchristos <christos@NetBSD.org>2021-07-08 15:44:44 +0000
commit143d572f8e8ffd2a8dd1a53dbfaf6f098dfcbfa8 (patch)
treef9465e7a2e41ee8bf039d2751af14274f52fdedf /lib
parent40295dd6a26586569b2224d609a832a967c812a2 (diff)
Include the 0 return from write. Although the real write system call does
not return 0, the synthetic writes from funopen/fmemopen could. This avoids infinite loops in >= test19 in fmemopen, but the tests still fail, perhaps because they assume the previous behavior, where flush does not adjust the stdio pointers on error.
Diffstat (limited to 'lib')
-rw-r--r--lib/libc/stdio/fflush.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/libc/stdio/fflush.c b/lib/libc/stdio/fflush.c
index 0763e2097de..0c8f9c65217 100644
--- a/lib/libc/stdio/fflush.c
+++ b/lib/libc/stdio/fflush.c
@@ -1,4 +1,4 @@
-/* $NetBSD: fflush.c,v 1.21 2021/07/08 09:06:51 christos Exp $ */
+/* $NetBSD: fflush.c,v 1.22 2021/07/08 15:44:44 christos Exp $ */
/*-
* Copyright (c) 1990, 1993
@@ -37,7 +37,7 @@
#if 0
static char sccsid[] = "@(#)fflush.c 8.1 (Berkeley) 6/4/93";
#else
-__RCSID("$NetBSD: fflush.c,v 1.21 2021/07/08 09:06:51 christos Exp $");
+__RCSID("$NetBSD: fflush.c,v 1.22 2021/07/08 15:44:44 christos Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
@@ -107,7 +107,7 @@ __sflush(FILE *fp)
for (; n > 0; n -= t, p += t) {
t = (*fp->_write)(fp->_cookie, (char *)p, n);
- if (t < 0) {
+ if (t <= 0) {
/* Reset _p and _w. */
if (p > fp->_p) {
/* Some was written. */