...body availability - the function is eligible for CTFE. I think any adjustment to the extant...

I wonder if you could CTFE it?

https://github.com/dlang/druntime/blob/2fa694319da397d72ab09cb336f3d588107278c1/src...

...is done by _d_newclass.
Yet another runtime function which CTFE has to re-implement.

...funcs that allowed to be called during CTFE? e.g. math funcs about numbers, but...

...5");

That constructor call is done via CTFE. The constructor calls std.math.lround. lround...

...that C func.

This is dramatically enhance CTFE's eval ability, esp for math funcs.

...like it does some CTFE, but

1) I cannot find where CTFE happens in:

https...

...remove the CTFE from it

---
string unifyDirSep(string str, string sep)
{
    version(ctfe)
    {
    static Regex...

...ctfe/ctfe_bc.d and comment out "debug = ctfe;"
Also go into src/dmd/ctfe...

...use as a mixin. So basically using CTFE to create code at compile time. (any...