[Issue 17261] Implicit cast from static array to immutable should not be allowed

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17261

--- Comment #3 from hsteoh at quickfur.ath.cx ---
Note that while some may blame implicit slicing for this bug, it still happens
with explicit slicing:

-----
string gunk() {
    string x = func()[]; // still allowed, but shouldn't be
    writeln(x.ptr);
    writeln(x);
    return x;
}
-----

Looks like the compiler's escaping ref analysis has a hole here.

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