[Boost-users] How to detect overflow when use lexical_cast??

From: Ô¬Ïþ»Ô (farproc_at_[hidden])
Date: 2006-07-24 07:52:37

Hi,all

I want to cast string to long long type and handle overflow. I tested as
follow.

long long somevar = lexical_cast<long
long>("123456789789789798879977978789787987879879787977897897897899879978798798798");//!!!!!!!!!!!!!!

But it does not throw an exception!!

It seem that casting to int does not have this kind of problem.

int somevar2 =
lexical_cast<int>("123456789789789798879977978789787987879");//will throw an
exception