On Mon, 24 Sep 2007 11:06:06 +0300, Thorsten Ottosen wrote:

Boris skrev:

...

struct foo { }; boost::ptr_map bar; bar.insert(1, new foo()); bar.insert(1, new foo());

Does this code leak? Or does bar delete the second instance of foo?

The containers never leak. (If so, it is a bug).

I asked as it wasn't clear to me if the container takes responsibility for deleting the second instance as after all it isn't stored in the container. I understand now that the code is safe though. Thanks for your reply! Boris

On Mon, 24 Sep 2007 17:05:18 +0300, Thorsten Ottosen wrote:

[...]

...

I asked as it wasn't clear to me if the container takes responsibility for deleting the second instance as after all it isn't stored in the container. I understand now that the code is safe though. Thanks for your reply!

http://www.boost.org/libs/ptr_container/doc/ptr_multimap_adapter.html#modifi...

in particular:

"Effects: Takes ownership of x and returns an iterator pointing to it."

I wasn't sure if this applies to a successful insertion only and decided to ask here before risking a memory leak. :) Boris