Some bug in receiver when parsing final model

[misha1sh]

Hello. Minimal size of final model struct is 8 bytes, but this assert is checking that message_size is larger than 16 bytes

FastBinaryEncoding/source/generator_cpp.cpp

Line 4513 in 393e6ee

assert((message_size >= (4 + 4 + 4 + 4)) && "Invalid receive data!");

Is this kind of bug or I am just using wrong compilation options?

[chronoxor]

8 bytes (4 byte size & 4 bytes offset) is minimal struct size, which could be included into another struct. For root structs which are send / received we need two more fields - 4 bytes total size and 4 bytes offset. See FBE spec for details - https://chronoxor.github.io/FastBinaryEncoding/documents/FBE.html#structs

[misha1sh]

In specification said that minimal size of FINAL struct is 8 bytes:

Final model struct properties:

Root struct size = 8 + sizeof(fileds)
Inner struct size = sizeof(fileds)

And this assert is working for Final model too. If you pass empty struct to FinalSender and then will try to pass buffer to FinalReceiver, this assert will fail. (model should be compiled with --final and --sender flags). Tested on java

[chronoxor]

Reproduced! Fix will be available soon.

[chronoxor]

Fixed!