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Fixed not allowing empty length user data #15

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Fixed not allowing empty length user data #15

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2 changes: 1 addition & 1 deletion modbus/functions/mbfuncother.c
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Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,7 @@ eMBSetSlaveID( UCHAR ucSlaveID, BOOL xIsRunning,
/* the first byte and second byte in the buffer is reserved for
* the parameter ucSlaveID and the running flag. The rest of
* the buffer is available for additional data. */
if( usAdditionalLen + 2 < MB_FUNC_OTHER_REP_SLAVEID_BUF )
if( usAdditionalLen + 2 <= MB_FUNC_OTHER_REP_SLAVEID_BUF )
{
usMBSlaveIDLen = 0;
ucMBSlaveID[usMBSlaveIDLen++] = ucSlaveID;
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