Why do ints defined in template mixins have garbage values?

H. S. Teoh hsteoh at quickfur.ath.cx
Tue Dec 11 21:17:46 UTC 2018


On Tue, Dec 11, 2018 at 09:09:55PM +0000, Johannes Riecken via Digitalmars-d-learn wrote:
> Code:
> 
> import std.conv;
> import std.stdio;
> 
> mixin template genInts()
> {
>   enum arr = [0,1];
>   static foreach (t; arr) {
>     mixin("int i" ~ to!string(t) ~ " = 5;");
>   }
> }
> 
> void main() {
>   mixin genInts!();
>   writeln(i0);
>   writeln(i1);
> }
> 
> 
> Expected output:
> 5
> 5
> 
> Actual output is two garbage integer values.

Whoa.  That looks like a compiler bug. File a bug here:

	https://issues.dlang.org/enter_bug.cgi


T

-- 
There are two ways to write error-free programs; only the third one works.


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