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Asked: 2026-06-17T17:35:45+00:00

I always forget to add the ‘static’ prefix to my variabeles and functions, and

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I always forget to add the ‘static’ prefix to my variabeles and functions, and so the GCC marks them as extern. Is it possible to change this behaviour so that it marks everything static by default. And is there a performance difference between the two types at runtime, or is it more a formality?

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  1. Editorial Team

    Is it possible to change this behaviour so that it marks everything static by default.

    Not to my knowledge.

    And is there a performance difference between the two types at runtime, or is it more a formality?

    Yes, gcc is able to perform further optimizations when objects or functions are static specified. For example, gcc(even in -O0) will inline a static specified function that is called only once.

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