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Re: constepxr | Isn't this a constant expression?

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On Sunday, March 11, 2012 6:40:42 AM UTC-4, Samkit Jain wrote:
> Compiler: gcc 4.6.1
> 
> Code:
> 
> struct data
> {
>     constexpr data(int i) :i_(i) {}
>     int i_;
> };
> 
> template <typename T, int Size>
> constexpr void const* get_addr(T const (&elements)[Size]) { return
> (void const*)elements; }
> 
> template <typename T>
> constexpr void const* get_addr(T const& element) { return (void
> const*)&element; }

IIUC, constexpr stuff is only for value semantics.  Addresses are for identity semantics, so constexpr is ignored.  Compile-time evaluations are done generally before object addresses are finalized, so pointer stuff can't really ever be constexpr.

Daryle W.

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constepxr | Isn't this a constant expression? Samkit Jain <samkit.feeds@gmail.com> - 2012-03-11 03:40 -0700
  Re: constepxr | Isn't this a constant expression? darylew@gmail.com - 2012-03-12 06:22 -0700
  constepxr | Isn't this a constant expression? Johannes Schaub - litb <schaub.johannes@googlemail.com> - 2012-03-13 23:52 -0700
    Re: constepxr | Isn't this a constant expression? 88888 Dihedral <dihedral88888@googlemail.com> - 2012-03-14 20:03 -0700
      Re: constepxr | Isn't this a constant expression? Samkit Jain <samkit.feeds@gmail.com> - 2012-03-15 10:04 -0700
        Re: constepxr | Isn't this a constant expression? Johannes Schaub <schaub.johannes@googlemail.com> - 2012-03-16 23:16 +0100
          Re: constepxr | Isn't this a constant expression? Samkit Jain <samkit.feeds@gmail.com> - 2012-03-18 08:09 -0700
    Re: constepxr | Isn't this a constant expression? Miles Bader <miles@gnu.org> - 2012-03-16 09:46 +0900

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