From: Ruiyu Ni <ruiyu.ni@intel.com>
To: edk2-devel@lists.01.org
Cc: Hao A Wu <hao.a.wu@intel.com>
Subject: [PATCH] MdePkg/SafeString.c: Fix code to be more readable
Date: Mon, 6 Mar 2017 15:24:27 +0800 [thread overview]
Message-ID: <20170306072427.601984-1-ruiyu.ni@intel.com> (raw)
The change doesn't impact the functionality.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
---
MdePkg/Library/BaseLib/SafeString.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/MdePkg/Library/BaseLib/SafeString.c b/MdePkg/Library/BaseLib/SafeString.c
index b7895ad..249fe47 100644
--- a/MdePkg/Library/BaseLib/SafeString.c
+++ b/MdePkg/Library/BaseLib/SafeString.c
@@ -1234,6 +1234,7 @@ StrToIpv6Address (
//
// Uintn won't exceed MAX_UINT16 if number of hexadecimal digit characters is no more than 4.
//
+ ASSERT (AddressIndex + 1 < ARRAY_SIZE (Address->Addr));
LocalAddress.Addr[AddressIndex] = (UINT8) ((UINT16) Uintn >> 8);
LocalAddress.Addr[AddressIndex + 1] = (UINT8) Uintn;
AddressIndex += 2;
@@ -1286,11 +1287,13 @@ StrToIpv6Address (
}
CopyMem (&Address->Addr[0], &LocalAddress.Addr[0], CompressStart);
ZeroMem (&Address->Addr[CompressStart], ARRAY_SIZE (Address->Addr) - AddressIndex);
- CopyMem (
- &Address->Addr[CompressStart + ARRAY_SIZE (Address->Addr) - AddressIndex],
- &LocalAddress.Addr[CompressStart],
- AddressIndex - CompressStart
- );
+ if (AddressIndex > CompressStart) {
+ CopyMem (
+ &Address->Addr[CompressStart + ARRAY_SIZE (Address->Addr) - AddressIndex],
+ &LocalAddress.Addr[CompressStart],
+ AddressIndex - CompressStart
+ );
+ }
if (PrefixLength != NULL) {
*PrefixLength = LocalPrefixLength;
@@ -3204,6 +3207,7 @@ AsciiStrToIpv6Address (
//
// Uintn won't exceed MAX_UINT16 if number of hexadecimal digit characters is no more than 4.
//
+ ASSERT (AddressIndex + 1 < ARRAY_SIZE (Address->Addr));
LocalAddress.Addr[AddressIndex] = (UINT8) ((UINT16) Uintn >> 8);
LocalAddress.Addr[AddressIndex + 1] = (UINT8) Uintn;
AddressIndex += 2;
@@ -3256,11 +3260,13 @@ AsciiStrToIpv6Address (
}
CopyMem (&Address->Addr[0], &LocalAddress.Addr[0], CompressStart);
ZeroMem (&Address->Addr[CompressStart], ARRAY_SIZE (Address->Addr) - AddressIndex);
- CopyMem (
- &Address->Addr[CompressStart + ARRAY_SIZE (Address->Addr) - AddressIndex],
- &LocalAddress.Addr[CompressStart],
- AddressIndex - CompressStart
- );
+ if (AddressIndex > CompressStart) {
+ CopyMem (
+ &Address->Addr[CompressStart + ARRAY_SIZE (Address->Addr) - AddressIndex],
+ &LocalAddress.Addr[CompressStart],
+ AddressIndex - CompressStart
+ );
+ }
if (PrefixLength != NULL) {
*PrefixLength = LocalPrefixLength;
--
2.9.0.windows.1
next reply other threads:[~2017-03-06 7:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-06 7:24 Ruiyu Ni [this message]
2017-03-06 7:27 ` [PATCH] MdePkg/SafeString.c: Fix code to be more readable Wu, Hao A
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