[Issue 8589] New: Incorrect conversion of function returning `typeof(null)` to function returning an array

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=8589

           Summary: Incorrect conversion of function returning
                    `typeof(null)` to function returning an array
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: wrong-code
          Severity: major
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: verylonglogin.reg at gmail.com


--- Comment #0 from Denis Shelomovskij <verylonglogin.reg at gmail.com> 2012-08-26 13:56:44 MSD ---
---
void f(int[] function() del)
{
    assert(!del());
}

typeof(null) g() { return null; }

void main()
{
    f(&g);
    f(() => null);
}
---
As a result `f(() => null)` will trigger this issue too. This makes lambda
expressions returning null very dangerous.

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