From: Greg Colvin (gcolvin_at_[hidden])
Date: 2000-10-30 13:23:34
It turns out there is a longstanding bug where Microsoft Visual C++
can optimize away the catch blocks for a throw from dynamic_cast:
http://support.microsoft.com/support/kb/articles/Q247/2/03.ASP
The above states version 6, but I have reproduced this in 5 as well.
The following ugly patch seems to fix the problem:
template<class T,class U> T do_dynamic_cast(U& r) {
return dynamic_cast<T>(r);
}
template<class T,class U> T do_dynamic_cast(U* p) {
return dynamic_cast<T>(p);
}
#define dynamic_cast do_dynamic_cast
Does anyone else have any insight on dealing with this?