warning #6379: The structure contains one or more misaligned fields.

[bucaioni__thomas]

Apparently, some fields are misaligned but in the source code the indentation is fine. What is the meaning of misalignment?

[mecej4]

The warning is about misalignment of data in memory when your program is running and accessing the memory locations occupied by members of the structure, not about the alignment of the characters of the source code in a text editor!

Regarding the issues related to misalignment, see, for example, https://en.wikipedia.org/wiki/Data_structure_alignment .

[bucaioni__thomas]

Is there anything I can do about it?

[mecej4 · Accepted solution]

You may be able to rearrange the order of the elements in the structure and add padding (or remove attributes that inhibit padding) to mitigate the alignment problem.

You can use compiler options to turn off the warning.

Unless you have conducted studies to establish that the misalignment problem is significant, however, I'd suggest that you take note of the issue and put it aside.