Re: Is dynamic_cast safe?

Article View: comp.std.c++

Article #3534

#3534

From: Fergus Henderson
Date: Wed, 28 Feb 1996 14:56

25 lines
1799 bytes

lars.farm@nts.mh.se (Lars Farm) writes:

>     5.2.6  Dynamic cast                           [expr.dynamic.cast]
>   ...
>   6 Otherwise,  v shall be a pointer to or an lvalue of a polymorphic type
>   ...
>What should happen when 'v' is not a pointer to or an lvalue of a
>polymorphic type? return 0? crash? throw bad_cast? undefined?

If `v' is not a pointer to or an lvalue of a polymorphic type, then
the program is ill-formed, and the implementation must issue a diagnostic.

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Path: arc1-ca.pugleaf.net!cs.mu.OZ.AU!bounce-back
From: fjh@munta.cs.mu.OZ.AU (Fergus Henderson)
Newsgroups: comp.std.c++
Subject: Re: Is dynamic_cast safe?
Date: 28 Feb 96 14:56:00 GMT
Organization: Comp Sci, University of Melbourne
Approved: fjh@cs.mu.oz.au
Message-ID: <4h1dj3$b6b@mulga.cs.mu.OZ.AU>
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