[Issue 1649] New: Variant coercion fails with delegates

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1649

           Summary: Variant coercion fails with delegates
           Product: D
           Version: 2.007
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Keywords: diagnostic
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: dhasenan at gmail.com


---
auto v = Variant({ return false; });
v.coerce!(bool delegate());
---

This produces the output:
/home/gareis/prog/dmd/src/phobos/std/variant.d(565): function
std.variant.VariantN!(maxSize).VariantN.coerce!(bool delegate()).coerce
expected to return a value of type bool delegate()
/home/gareis/prog/dmd/src/phobos/std/variant.d(5): template instance
std.variant.VariantN!(maxSize).VariantN.coerce!(bool delegate()) error
instantiating

It should static assert false if the type you are trying to coerce to is not
supported (struct, delegate, etc).


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