On 6/5/18 12:10 PM, Stefan Koch wrote:
This is not bug just not very intuitive.
Since you are declaring a static array the value of n needs to known at
compiletime.
so it'll try to evaluate n at an compile-time context in which n is 1.
however when code-generation for the function is done __ctfe will be false.
Causing the n variable to be initialized to 2.
Therefore n will not be equal to a.length.
No, it's definitely a bug. main is not being evaluated at compile time.
The real result of this function should be a compile-time error --
__ctfe is a *runtime* value that is always defined based on whether you
are __ctfe or not. Therefore, n must be a runtime value, and not usable
as a static array dimension.
If the posted code is valid, then this should be valid as well:
static if(__ctfe)
immutable n = 1;
else
immutable n = 2;
But it's not.
-Steve
