[cmake-developers] [PATCH] Macro generation for relaxed constexpr

[Stephen Kelly]

Stephen Kelly wrote:

> * A method marked constexpr will fail to compile with a compiler which
> does not support relaxed constexpr if the method uses language which
> requires relaxed mode (such as a for loop), even if the method is
> evaluated in a non- constant expression. I tested GCC and Clang.

Are there any values of '...' where 

 constexpr foo = ...;

would compile or not depending only on whether using cxx11-constexpr or 
cxx14-constexpr?

Thanks,

Steve.