[Issue 12543] New: Class.sizeof requires the Class' definition

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=12543

           Summary: Class.sizeof requires the Class' definition
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: monarchdodra at gmail.com


--- Comment #0 from monarchdodra at gmail.com 2014-04-08 00:56:16 PDT ---
//----
class SomeClass;
pragma(msg, SomeClass.sizeof);
//----
Error: class main.SomeClass is forward referenced when looking for 'sizeof'
//----

AFAIK, you don't need to know about SomeClass, to know it's size is that of
object, eg, size_t.

See also:
https://d.puremagic.com/issues/show_bug.cgi?id=12540
https://github.com/D-Programming-Language/phobos/pull/2074

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