[Bug d/92216] GDC generate duplicate symbols when mixins and interfaces are used to gather

[kozzi11 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92216

--- Comment #1 from Daniel Kozak <kozzi11 at gmail dot com> ---
Created attachment 47112
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47112&action=edit
Make thunk weak linking