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Asked: 2026-06-03T20:51:42+00:00

I have a class called GameState in its own file and that class has

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I have a class called GameState in its own file and that class has a pointer to another object of type StatusView which is in its own file. In GameState.h, I have included the StatusView header but when I try to compile it, I get the error:

missing type specifier - int assumed

However, when I forward declare StatusView even after including it, I am able to compile it. I have no clue what’s causing the requirement to forward declare the class.

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1 Answer

  1. Editorial Team

    You have a circular dependency between the headers. A includes B and B includes A, but B doesn’t really include A because #pragma once was already evaluated for A. (It would be the same with a standard header guard.)

    Because the inner inclusion is ignored, it’s as if it were never there at all, and you need the forward declaration.

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