Re: [eigen] strange sizeof on windows

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Benoit Jacob schrieb:
Hi Frank,

Thank you very much. Together with Robert's remark, I am starting to
have a terrible fear:could it be that with MSVC, inheriting an empty
struct increases the sizeof? Normally this shouldn't be the case (by
contrast, having an empty struct as member does normally increase the

can you try this:

struct empty {};
struct foo : empty
  float x;

and print sizeof(foo), sizeof(empty), sizeof(float) ?

sizeof(foo) = 4
sizeof(empty) = 1
sizeof(float) = 4


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