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server: fix ComStmtSendLongData when data length is 0 #7485

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merged 3 commits into from
Aug 27, 2018
Merged

server: fix ComStmtSendLongData when data length is 0 #7485

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670fee7
fix ComStmtSendLongData
jackysp Aug 24, 2018
10de78f
address comments
jackysp Aug 27, 2018
72f3a50
Merge branch 'master' into fix_binary_long_data
jackysp Aug 27, 2018
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8 changes: 5 additions & 3 deletions server/conn_stmt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -249,8 +249,9 @@ func parseStmtArgs(args []interface{}, boundParams [][]byte, nullBitmap, paramTy
args[i] = nil
continue
}
if boundParams[i] != nil {
args[i] = boundParams[i]
if boundParamLength := len(boundParams[i]); boundParamLength != 0 {
// Trim out the last ending byte.
args[i] = boundParams[i][:boundParamLength-1]
continue
}

Expand Down Expand Up @@ -509,7 +510,8 @@ func (cc *clientConn) handleStmtSendLongData(data []byte) (err error) {
}

paramID := int(binary.LittleEndian.Uint16(data[4:6]))
return stmt.AppendParam(paramID, data[6:])
// Append an extra 0 to the end to distinguish no data and no parameter.
return stmt.AppendParam(paramID, append(data[6:], 0))
}

func (cc *clientConn) handleStmtReset(data []byte) (err error) {
Expand Down