extend not working 'pb/standard.lua:357: table index is nil' #27
Description
When message extension is used, following error is printed:
luajit: /usr/local/share/lua/5.1/pb/standard.lua:357: table index is nil
stack traceback:
/usr/local/share/lua/5.1/pb/standard.lua:357: in function 'define'
/usr/local/share/lua/5.1/pb/standard.lua:219: in function 'define_types'
/usr/local/share/lua/5.1/pb/standard.lua:253: in function 'define'
/usr/local/share/lua/5.1/pb/standard.lua:219: in function 'define_types'
/usr/local/share/lua/5.1/pb/standard.lua:373: in function 'compile'
/usr/local/share/lua/5.1/pb.lua:182: in function 'load_proto'
./test_extension.lua:20: in main chunk
[C]: at 0x004043f0
Problem is in line 357 in pb/standard.lua: field.tag_type is nil. Table ket tag_type not exists.
Code to reproduce:
#!/usr/bin/env luajit
local proto = [[
message DeviceInfo {
optional int32 deviceId = 1;
optional int32 deviceType = 2;
extensions 100 to 199;
}
message BatteryInfo {
extend DeviceInfo {
optional BatteryInfo batteryInfo = 100;
}
optional int32 addId = 1;
}
]]
local pb = require 'pb'
local Msgs = pb.load_proto(proto, "Message");