Exception thrown on typeid of null pointer
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bad_typeid |
Type of the exceptions thrown by typeid when applied on a pointer to a polymorphic type which has a null pointer value.
Its member what returns a null-terminated character sequence identifying the exception.
Example
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// bad_typeid example
#include <iostream>
#include <typeinfo>
using namespace std;
class Polymorphic {virtual void Member(){}};
int main () {
try
{
Polymorphic * pb = 0;
cout << typeid(*pb).name();
}
catch (bad_typeid& bt)
{
cerr << "bad_typeid caught: " << bt.what() << endl;
}
return 0;
}
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Possible output:
bad_typeid caught: St10bad_typeid
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See also
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