warning: padding size of 'model' with 4 bytes to alignment boundary

[canid]

warning: padding size of 'model' with 4 bytes to alignment boundary

What does that mean

[J.Hilk]

@canid said in warning: padding size of 'model' with 4 bytes to alignment boundary:

with 4 bytes to alignment boundary

The compiler is telling you, that for reasons (can't say why exactly without seeing the class), he assigns additional 4 bytes of memory that will stay unused, when an instance of your class is created.

Useful and needed information if you do low level operations on the class object- e.g direct memory access, or if you want to reduce memory consumption of your application