linux-kernel - [PATCH 09/13] lib/test_printf.c: add a few string tests

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Date:	Tue, 20 Oct 2015 22:30:09 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 09/13] lib/test_printf.c: add a few string tests

Cc: Kees Cook <keescook@...omium.org>
Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 lib/test_printf.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/test_printf.c b/lib/test_printf.c
index 1ce1a1dd8faf..80ddafb2675d 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -166,6 +166,10 @@ test_string(void)
 	test("", "%s%.0s", "", "123");
 	test("ABCD|abc|123", "%s|%.3s|%.*s", "ABCD", "abcdef", 3, "123456");
 	test("1  |  2|3  |  4|5  ", "%-3s|%3s|%-*s|%*s|%*s", "1", "2", 3, "3", 3, "4", -3, "5");
+	test("1234      ", "%-10.4s", "123456");
+	test("      1234", "%10.4s", "123456");
+	/* Negative precision should be treated as 0. */
+	test("    ", "%4.*s", -5, "123456");
 	/*
 	 * POSIX and C99 say that a missing precision should be
 	 * treated as a precision of 0. However, the kernel's printf
-- 
2.6.1

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