longzhiri opened a new pull request #2215:
URL: https://github.com/apache/thrift/pull/2215
bug in lib/lua/TCompactProtocol.lua, code as follow:
```lua
function TCompactProtocol:readMapBegin()
local size = self:readVarint32()
local kvtype = 0
if size > 0 then
kvtype = self:readSignByte()
end
local ktype = self:getTType(libluabitwise.shiftr(kvtype, 4))
local vtype = self:getTType(kvtype)
return ktype, vtype, size
end
```
if the map's size is zero, it should‘t read another byte.
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