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c++compilationstatic-assert

Is static_assert compiled into the binary file

I'd like to use static_assert in my C++11 project to do some compile time check.

As my understanding, static_assert won't be executed at runtime, right?

If so, when I compile my project by executing the command about compilation, such as gcc ..., the compiler will build the static_assert into the binary file or the static_assert will be totally ignored, just like a comment?

Solution

  • Is static_assert compiled into the binary file

    No.

    As my understanding, static_assert won't be executed at runtime, right?

    Right.

    the compiler will build the static_assert into the binary file

    No.

    the static_assert will be totally ignored, just like a comment?

    No, it's not a comment - the expression is checked, and if the expression is false, then a message is shown. When the expression is not a constant (can't be computed at compile time) then also a message is shown.