[Issue 12204] using delegates as alias parameter to templated struct: cannot get frame pointer to sort

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12204

--- Comment #2 from briancschott at gmail.com ---
Another test case:

---
module test;
import std.algorithm;

struct DummyRange
{
    auto opSlice()
    {
        int[] ints;
        return ints.map!(i => i);
    }
}

void main()
{
    DummyRange r1, r2, r3;
    auto r = cartesianProduct(r1[], r2[], r3[]);
}
---

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