[Issue 12537] Templatizing opEquals results in infinite recursion in the compiler

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12537

--- Comment #4 from Kenji Hara <k.hara.pg at gmail.com> ---
Reduced test case:

class C12537a { C12537b c; alias c this; }
class C12537b { C12537a c; alias c this; }

void equals()(Object lhs) {}

void main()
{
    const C12537a c;
    equals(c);
}

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