[Issue 14392] New: Operator overload is shadowed by "alias this"

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14392

          Issue ID: 14392
           Summary: Operator overload is shadowed by "alias this"
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: DMD
          Assignee: nobody at puremagic.com
          Reporter: maximzms at gmail.com

In the following code `alias this` should not be used since there is method
`Boo.opBinary` that takes argument of type `Foo` explicitly.

----------------------------------------
import std.stdio;

struct Foo
{
    int v;

    auto opBinaryRight(string op)(int lhs) if (op == "*")
    {
        writeln("int * Foo");
        return Boo(lhs * v);
    }
}

struct Boo
{
    int v;
    alias v this;

    auto opBinary(string op)(Foo rhs) if (op == "*")
    {
        writeln("Boo * Foo");
        return Boo(v * rhs.v);
    }
}

void main(string[] args)
{
    Boo(1) * Foo(2);
}
----------------------------------------

The output should be "Boo * Foo" regardless whether there is `alias this` or
not.
However it is "int * Foo" with `alias this` line and "Boo * Foo" without it.
Tested with DMD v2.067.0

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