From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: edk2-devel@lists.01.org, michael.d.kinney@intel.com,
liming.gao@intel.com
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH] MdePkg/BaseMemoryLibOptDxe: check for zero length in ZeroMem ()
Date: Thu, 3 Nov 2016 17:31:14 +0000 [thread overview]
Message-ID: <1478194274-16524-1-git-send-email-ard.biesheuvel@linaro.org> (raw)
Unlike other string functions in this library, ZeroMem () does not
return early when the length of the input buffer is 0. So add the
same to ZeroMem () as well.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
MdePkg/Library/BaseMemoryLibOptDxe/ZeroMemWrapper.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/ZeroMemWrapper.c b/MdePkg/Library/BaseMemoryLibOptDxe/ZeroMemWrapper.c
index 2a0a038fd6c5..fbc2f5742c8c 100644
--- a/MdePkg/Library/BaseMemoryLibOptDxe/ZeroMemWrapper.c
+++ b/MdePkg/Library/BaseMemoryLibOptDxe/ZeroMemWrapper.c
@@ -46,6 +46,10 @@ ZeroMem (
IN UINTN Length
)
{
+ if (Length == 0) {
+ return Buffer;
+ }
+
ASSERT (!(Buffer == NULL && Length > 0));
ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));
return InternalMemZeroMem (Buffer, Length);
--
2.7.4
next reply other threads:[~2016-11-03 17:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-03 17:31 Ard Biesheuvel [this message]
2016-11-03 17:38 ` [PATCH] MdePkg/BaseMemoryLibOptDxe: check for zero length in ZeroMem () Laszlo Ersek
2016-11-03 18:05 ` Ard Biesheuvel
2016-11-03 18:10 ` Laszlo Ersek
2016-11-03 17:38 ` Carsey, Jaben
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