Hi @Dimka88! The warnings are fixed in the following pull request:
https://github.com/accel-ppp/accel-ppp/pull/64
From my understanding, the situation is next:
In general, assuming anything about data alignment is a bad practice that leads to very obscure errors. Taking the address of a packed member is dangerous since the reduced alignment of the pointee is lost. If the pointer value is dereferenced, this can lead to memory alignment faults in some architectures.