Partial classes

[Walter Bright]

On 6/26/2012 12:52 PM, Timon Gehr wrote:
> On 06/26/2012 09:29 PM, Artur Skawina wrote:
>> On 06/26/12 20:21, Walter Bright wrote:
>>> On 6/26/2012 3:53 AM, Jacob Carlborg wrote:
>>>> replace arbitrary methods and classes, even in the standard library. In D you
>>>> can overwrite an arbitrary piece of memory.
>>>
>>> Not when using safe code, you can't.
>>
>>     void poke(T)(size_t addr, T val) @safe pure {
>>        T* ptr;
>>        ptr[addr/T.sizeof] = val;
>>     }
>>
>>     int i = 42;
>>
>>     void main() @safe {
>>        writeln(i);
>>        auto whatever = cast(size_t)&i;
>>        poke(whatever, 666);
>>        writeln(i);
>>        poke(0, 0);
>>     }
>>
>>     void writeln(A...)(A a) @trusted { import std.stdio; writeln(a); }
>>
>> artur
>
> This is not legal D code. (pointer indexing is unsafe)

If the compiler doesn't give an error on that, it's a compiler bug, not a 
language problem.