CODEWITHSUNDEEP
c++visual-studiowarningsmemory-alignment
Fedor
Fedor

Reputation: 21201

‘structure was padded due to alignment specifier’ VS warning

If in Visual Studio I specify alignment for a class or structure, e.g.

struct __declspec(align(256)) A
{
};

I get level 4 warning as follows ‘warning C4324: 'A': structure was padded due to alignment specifier’. Do I specify alignment somehow incorrectly or this warning is just safe to ignore?

Upvotes: 1

Views: 1476

Answers (1)

eerorika
eerorika

Reputation: 238351

Do I specify alignment somehow incorrectly

No, although you are using a language extension. That may be unnecessary as there is a standard syntax that would be preferable:

struct alignas(256) A
{
};

This warning is just safe to ignore?

Yes, it is safe to ignore this warning, unless you have areason to consider the padding to be a problem.

However, I recommend asking yourself: why would you need a class to be aligned when it has no members?

Upvotes: 3

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