Re: [boost] How to get the size of an C-array?

Subject: Re: [boost] How to get the size of an C-array?
From: Sid Sacek (ssacek_at_[hidden])
Date: 2009-10-14 18:18:05

I'm going to take a guess. Of course, this is all contingent on whether T is a class that contains a destructor, otherwise all bets are off.
-Sid Sacek

struct XYZ {  int i; };

struct T 
{
        XYZ xyz;
        ~T() {}
};

void foo( void )
{
        T * tp = new T[ 100 ];

        size_t array_size = reinterpret_cast< size_t * >( tp )[ -1 ];
}