From 174ab56c0677389bd4e851654d45bdb5473912eb Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Wed, 10 Jan 2018 21:55:53 +0000
Subject: [PATCH] fgetwc may clobber errno when the result is not WEOF

---
 src/regression/fgetwc-buffering.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/regression/fgetwc-buffering.c b/src/regression/fgetwc-buffering.c
index a73ad54..dc0a13d 100644
--- a/src/regression/fgetwc-buffering.c
+++ b/src/regression/fgetwc-buffering.c
@@ -23,11 +23,11 @@ int main()
 	A(write(p[1], "\200", 1) == 1);
 	close(p[1]);
 
-	errno = 0;
 	wc = fgetwc(stdin);
 	if (wc != 0x800)
 		t_error("wanted 0x800, got 0x%x\n", (unsigned)wc);
 
+	errno = 0;
 	wc = fgetwc(stdin);
 	if (wc != WEOF)
 		t_error("wanted WEOF, got 0x%x\n", (unsigned)wc);
-- 
2.11.4.GIT