[Issue 3834] New: forward reference in templated class

d-bugmail at puremagic.com d-bugmail at puremagic.com
Thu Feb 18 13:00:54 PST 2010


http://d.puremagic.com/issues/show_bug.cgi?id=3834

           Summary: forward reference in templated class
           Product: D
           Version: 2.040
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2010-02-18 13:00:53 PST ---
class Foo(T) {
    Node!T head;
    class Node(T) {}
}
void main() {
    auto f = new Foo!int;
}


dmd prints:

test.d(2): Error: template instance Node!(int) forward references template
declaration Node(T)

test.d(2): Error: Node!(int) is used as a type
test.d(2): Error: variable test.Foo!(int).Foo.head voids have no value
test.d(6): Error: template instance test.Foo!(int) error instantiating

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