[Issue 3906] New: Undefined struct and union declarations are not documented

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=3906

           Summary: Undefined struct and union declarations are not
                    documented
           Product: D
           Version: 2.041
          Platform: All
               URL: http://digitalmars.com/d/2.0/struct.html
        OS/Version: All
            Status: NEW
          Keywords: spec
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: jlquinn at optonline.net


--- Comment #0 from Jerry Quinn <jlquinn at optonline.net> 2010-03-08 21:54:59 PST ---
It seems the grammar was updated to permit the following code:

struct Z;

However, there is no documentation on what this does.  Trying dmd 2.041, this
compiles.  However, trying the following (as expected from C/C++):

struct Z;
struct Z {}

gives this error:

junk.d(2): Error: struct junk.Z conflicts with struct junk.Z at junk.d(1)

Something is amiss here.

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