[Issue 15957] Disabled postblit + template mixin break opAssign with confusing error message

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15957

--- Comment #4 from Dicebot <public at dicebot.lv> ---
Interesting. Why does it need to create opAssign when post-blit is disabled? Is
it documented anywhere? It sounds very confusing that disabling any symbol
result in hidden injection of another one in main scope.

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