bug in compiles?

[Jacob Carlborg]

On 2019-04-11 20:13, Alex wrote:
> The following code works when I comment out the static if
> 
> //static if (__traits(compiles, __traits(getAttributes, T)))
>     static foreach(a;  __traits(getAttributes, T)) Attributes ~=
> 
> 
> There seems to be absolutely no reason why this code would fail with the 
> static if but pass without it but in the first case I get no attributes 
> because the __traits compiles fails.
> 
> 
> 
> __traits(compiles, __traits(getAttributes, T))
> 
> vs
> 
> __traits(getAttributes, T)
> 
> How could it not compile in the first case and yet work in the foreach?

The problem is that "__traits(getAttributes, T)" in it self is not valid 
code. It needs to be part of larger expression or statement. The 
following seems to work:

https://run.dlang.io/is/JWkdbQ

-- 
/Jacob Carlborg