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allow AdsWrite for zero length buffer #6

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allow AdsWrite for zero length buffer #6

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3 changes: 2 additions & 1 deletion AdsLib/AdsLib.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -217,7 +217,7 @@ long AdsSyncWriteReqEx(long port,
const void* buffer)
{
ASSERT_PORT_AND_AMSADDR(port, pAddr);
if (!buffer) {
if (!buffer && bufferLength) {
return ADSERR_CLIENT_INVALIDPARM;
}

Expand Down Expand Up @@ -332,3 +332,4 @@ long AdsSyncSetTimeoutEx(long port, uint32_t timeout)
ASSERT_PORT(port);
return GetRouter().SetTimeout((uint16_t)port, timeout);
}