On 06/29/2012 02:17 PM, Lawrence Crowl wrote:
+<h4><a name="RTTI">RTTI and<code>dynamic_cast</code></a></h4> + +<p> +Run-time type information (RTTI) is permitted +when certain non-default<code>--enable-checking</code> options are enabled, +so as to allow checkers to report dynamic types. +However, by default, RTTI is not permitted +and the compiler must build cleanly with<code>-fno-rtti</code>. +</p>
As discussed, I would say that RTTI is currently not permitted but could be added later. For the rationale, I would say that disabling RTTI saves some space for classes with virtual functions when it isn't used, but could be enabled if it would be useful in some part of the compiler. And then remove the rest of the rationale.
Jason
