Home/ Questions/Q 4253334
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-21T04:55:55+00:00

I though address-of-static was a constant expression as in the example below but I

  • 0

I though address-of-static was a constant expression as in the example below but I get a compiler error (or is this new to C++0x?)

class X {
    static const int x;
    enum { y = &x };
};
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Reading the 1998 standard, 5.19(1): “In several places, C++ requires expressions that evaluate to an integral or enumeration constant…as enumerator initializers (7.2)….”

    Further, “An integral constant-expression can involve only….In particular, except in sizeof expressions, functions, class objects, pointers, or references shall not be used….”

    Floating literals are explicitly listed as castable to integral or enumeration type, and nothing else is.

    Casting even an address constant expression to make an enumerator initializer was invalid from the first standard.

    • 0