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[message] adjust offset when cloning a message subset (#3944)

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This commit is contained in:
Jonathan Hui
2019-06-26 03:42:59 -07:00
committed by GitHub
parent a6ae39893b
commit 03fac0ff48
1 changed files with 4 additions and 1 deletions
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src/core/common/message.cpp
+4 -1
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@@ -637,6 +637,7 @@ Message *Message::Clone(uint16_t aLength) const
{
otError error = OT_ERROR_NONE;
Message *messageCopy;
uint16_t offset;
VerifyOrExit((messageCopy = GetMessagePool()->New(GetType(), GetReserved(), GetPriority())) != NULL,
error = OT_ERROR_NO_BUFS);
@@ -644,7 +645,9 @@ Message *Message::Clone(uint16_t aLength) const
CopyTo(0, 0, aLength, *messageCopy);
// Copy selected message information.
messageCopy->SetOffset(GetOffset());
offset = GetOffset() < aLength ? GetOffset() : aLength;
messageCopy->SetOffset(offset);
messageCopy->SetSubType(GetSubType());
messageCopy->SetLinkSecurityEnabled(IsLinkSecurityEnabled());
#if OPENTHREAD_CONFIG_ENABLE_TIME_SYNC