Can't I allocate at descontructor?

[Jack]

The following code returns a memory error. I did notice it did 
happens whenever I did a memory allocation. Is this not possible 
in the descontrutor? if so, why?

> core.exception.InvalidMemoryOperationError at src\core\exception.d(647): Invalid memory operation

import std.stdio;

int main()
{
	auto a = new A;
	return 0;
}

class A
{
	this() { }
	
	~this()
	{
		f();
	}
}

void f()
{
	auto str = new string[100];
}