[Issue 7516] Postblit not called for structs returned from a ternary operator

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7516



--- Comment #3 from Kenji Hara <k.hara.pg at gmail.com> 2012-05-10 22:56:59 PDT ---
Test cases:

void main()
{
    static struct S
    {
        int val;

        this(int n) { val = n; }
        this(this) { val *= 3; }
    }

    // cond ? lvalue : lvalue
    S foo(bool f)
    {
        auto s1 = S(1), s2 = S(2);
        return f ? s1 : s2;
    }
    auto s1 = foo(true);
    assert(s1.val == 3);
    auto s2 = foo(false);
    assert(s2.val == 6);

    // cond ? rvalue : rvalue
    S bar(bool f)
    {
        return f ? S(1) : S(2);
    }
    auto s3 = bar(true);
    assert(s3.val == 1);
    auto s4 = bar(false);
    assert(s4.val == 2);

    // cond ? lvalue : rvalue
    S baz(bool f)
    {
        auto s1 = S(1);
        return f ? s1 : S(2);
    }
    auto s5 = baz(true);
    assert(s5.val == 3);
    auto s6 = baz(false);
    assert(s6.val == 2);
}

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