[Issue 1419] dup attr not checked in the sub-class

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1419





------- Comment #4 from someanon at yahoo.com  2007-11-03 00:26 -------
or at least add a compiler flag to warn the user.


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