Boost C++ Libraries: Ticket #3249: ptr_list of const items

attachment set

matcatprg@… — Tue, 07 Jul 2009 15:59:15 GMT

attachment → main.cpp

sample code

anonymous — Tue, 07 Jul 2009 19:24:03 GMT

I have implemented initial support for it in trunk. Play around and let me know what you think.

-Thorsten

matcatprg@… — Tue, 07 Jul 2009 20:19:18 GMT

Replying to anonymous:

I have implemented initial support for it in trunk. Play around and let me know what you think.

-Thorsten

assuming that this: https://svn.boost.org/svn/boost/trunk/boost/ptr_container/ is the correct repository, the compiler can't find push_back(), push_front(), begin(), and end(). E.g: ‘class boost::ptr_list<BASE, boost::heap_clone_allocator, std::allocator<void*> >’ has no member named ‘begin’

I didn't reinstall the entire library, but just downloaded ptr_container and used rest of old library. I don't think this is problematic b/c I tested 1.39.0 the same way and it works fine.

Just to make sure that the const issue isn't one that was fixed by 1.39.0, I tested it as well and it has the same problem w/ ptr_list not compiling w/ const items.

I should mention that in the code where I'm using ptr_list I've already switched over to non-const items in ptr_list. (B/c of abstraction there isn't a way to accidentally tweak the internals of the object, but const would be the theoretical ideal)

Before you go changing code, are the objects in ptr_list supposed to be non-const by design?

Matthew A. Todd

thorsten — Tue, 07 Jul 2009 20:27:37 GMT

Hi matthew,

Please download the whole thing and let it replace the old.

Also always state which compiler you are using.

No, it was an implementation defect that you could not use const object. The case didn't occur to me, before you and others wanted to use it with const objects.

-Thorsten

status changed; keywords, resolution set

matcatprg@… — Tue, 07 Jul 2009 22:25:55 GMT

keywords ptr_list const added
status new → closed
resolution → fixed

Downloaded entire library and replaced old.

Tested in two projects, one I had attached when creating this ticket and another one. Both worked splendidly.

I must say, I'm really impressed.

Matthew A. Todd