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--rtti, --no_rtti
Controls support for the RTTI features dynamic_cast and typeid in C++.
Usage
Use --no_rtti to disable source-level RTTI features such as
dynamic_cast.
Note
You are permitted to use dynamic_cast without
--rtti in cases where RTTI is not required, such as dynamic cast to an
unambiguous base, and dynamic cast to (void *). If you try to use
dynamic_cast without --rtti in cases where
RTTI is required, the compiler generates an error.
Mode
These options are effective only if the source language is C++.
Default
The default is --rtti.