[LLVMdev] isa and friends as an alternative to dynamic cast?

[Jeff Cohen]

As far as I can tell, exceptions work just fine without RTTI when using 
gcc 3.4.2.  dynamic_cast, on the hand, crashes without RTTI (no 
compilation error or warning is generated).

Jeff Cohen wrote:

> This may be the case with GCC, but VC++ allows exception handling to 
> be enabled while RTTI is disabled.  According to VC++ documentation, 
> RTTI is needed only to support dynamic_cast, the typeid operator, and 
> the type_info class.
>
> Chris Lattner wrote:
>
>> On Thu, 21 Apr 2005, Jeff Cohen wrote:
>>
>>> That's a good point.
>>
>>
>>
>> I think there are some issues with doing this (e.g. EH doesn't work, 
>> so the very few places we use it would have to be modified), but 
>> other than that I fully support the idea.
>>
>> -Chris
>
>
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