From 31885f64e96e172cc03506f875fb535172a27c05 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= <l.s.r@web.de>
Date: Mon, 1 May 2023 21:51:57 +0200
Subject: [PATCH] test-ctype: check EOF
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The character classifiers are supposed to allow passing EOF to them, a
negative value.  It isn't part of any character class.  Extend the tests
to cover that.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/helper/test-ctype.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/t/helper/test-ctype.c b/t/helper/test-ctype.c
index b21bd672d9..c8a0363ba2 100644
--- a/t/helper/test-ctype.c
+++ b/t/helper/test-ctype.c
@@ -28,6 +28,8 @@ static int is_in(const char *s, int ch)
 		if (is_in(s, i) != t(i))	\
 			report_error(#t, i);	\
 	}					\
+	if (t(EOF))				\
+		report_error(#t, EOF);		\
 }
 
 #define DIGIT "0123456789"