why mixin template can not inclulde statement;

[Kagamin]

On Friday, 10 August 2018 at 13:01:21 UTC, learnfirst1 wrote:
> duplicate symbol __D4test4mainUZ8__mixin111__a_field_0i in:
>     test.o
> ld: 1 duplicate symbol for architecture x86_64
> clang: error: linker command failed with exit code 1 (use -v to 
> see invocation)
> Error: linker exited with status 1
>
>
> this really make no sense,  what is wrong with it?    (same 
> code build with ldc2)

Looks like some problem with tuple, try __gshared a = A[0];