Why do ints defined in template mixins have garbage values?
Steven Schveighoffer
schveiguy at gmail.com
Tue Dec 11 21:19:59 UTC 2018
On 12/11/18 4:09 PM, Johannes Riecken 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.
Looks like a bug to me in static foreach.
Using -vcg-ast, it appears that the int definitions do not show up in main.
If I add an int using a regular declaration or a straight mixin("int i0
= 5;"); then the variable shows up.
-Steve
More information about the Digitalmars-d-learn
mailing list