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Sun, 05 Apr 2026 17:42:43 -0700 (PDT) Received: from localhost.localdomain ([110.44.115.179]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b27472d5e5sm146105915ad.15.2026.04.05.17.42.40 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 05 Apr 2026 17:42:43 -0700 (PDT) From: Shuvam Pandey To: Petr Mladek , Steven Rostedt Cc: Andy Shevchenko , Rasmus Villemoes , Sergey Senozhatsky , Andrew Morton , linux-kernel@vger.kernel.org Subject: [PATCH] printf: add escaped-string format tests Date: Mon, 6 Apr 2026 06:27:37 +0545 Message-ID: <20260406004237.16189-1-shuvampandey1@gmail.com> X-Mailer: git-send-email 2.50.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" printf_kunit leaves escaped_str() empty even though printk-formats.rst documents %*pE conversions and says that omitting the field width escapes one byte only. Add tests for the documented %*pE, %*pEhp, and %*pEa conversions, and for the single-byte %pE default when the field width is omitted. Signed-off-by: Shuvam Pandey --- lib/tests/printf_kunit.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lib/tests/printf_kunit.c b/lib/tests/printf_kunit.c index f6f21b445..8ea67abf1 100644 --- a/lib/tests/printf_kunit.c +++ b/lib/tests/printf_kunit.c @@ -394,6 +394,14 @@ addr(struct kunit *kunittest) static void escaped_str(struct kunit *kunittest) { + const u8 buf[] =3D { 0x1b, 0x62, 0x20, 0x5c, 0x43, + 0x07, 0x22, 0x90, 0x0d, 0x5d }; + + test("\\eb \\C\\a\"\\220\\r]", "%*pE", 10, buf); + test("\\x1bb \\C\\x07\"\\x90\\x0d]", "%*pEhp", 10, buf); + test("\\e\\142\\040\\\\\\103\\a\\\"\\220\\r\\135", + "%*pEa", 10, buf); + test("\\e", "%pE", buf); } =20 static void