File: test20795.d

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gcc-arm-none-eabi 15%3A14.2.rel1-1
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// https://issues.dlang.org/show_bug.cgi?id=20795

// REQUIRED_ARGS: -preview=dip1000

struct Foo
{
    void opEquals(T)(T rhs) if (T.init.opCast!string) {}
}

struct Bar
{
    void opEquals()(Bar)
    {
        Gun() == Foo();
    }
}

class Baz
{
    void opCast(T)() {}
}

struct Gun
{
    void[24] buff;

    auto underlying()
    {
        return cast(Baz) buff.ptr;
    }

    alias underlying this;

    void opEquals(R)(R) if (Bar.init == R.init) {}
}