memory leaks in phobos?

[Ali Çehreli]

On 04/10/2013 10:04 PM, Andrey wrote:> Hello!

 >      int arr[];
 >      int length = 100_000_000;
 >      for (int i=0; i<10; i++)
 >      {
 >          arr.length = length; // always new memory blocks, why?

The slice does not know what other slices may be sharing the same 
elements. So, increasing the length of a slice will relocate the 
elements (almost always, with exceptions.) The following article goes 
into a lot of detail:

   http://dlang.org/d-array-article.html

 >          arr[90] = 20;
 >          writeln("After allocation. Press a key.");
 >          stdin.readln();
 >
 >          clear(arr);
 >          arr.length = 0; // must be deallocation? but nothing happens

Are you compiling as a 32-bit application? Then, chances are random bit 
patterns look like references into these slices. (dmd uses a 
conservative garbage collector). Try compiling with -m64.

Ali