[ros-users] GPL-licensed .msg files

Hi,

Does anyone know the implications of a GPL-licensed .msg or .srv file?
If I wrote code that uses these messages (through the generated C++
code), does my code also need to be under the GPL? Or maybe, because
the code generation process only reads the GPL-encumbered .msg file
and outputs independent C++ code it's somehow free of the license?

Thanks,
Mrinal