3 Commits

Author	SHA1	Message	Date
Chandler Carruth	3c3f6be0c8	Fix a null pointer dereference when copying a null polymorphic pointer. ... This bug only bit the C++98 build bots because all of the actual uses really do move. ;] But not *quite* ready to do the whole C++11 switch yet, so clean it up. Also add a unit test that catches this immediately. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194548 91177308-0d34-0410-b5e6-96231b3b80d8	2013-11-13 02:48:20 +00:00
Chandler Carruth	3481cdc573	Switch to allow implicit construction. In many cases, we're wrapping ... a derived type and this makes it *much* easier to write this code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194321 91177308-0d34-0410-b5e6-96231b3b80d8	2013-11-09 05:55:03 +00:00
Chandler Carruth	aec427786b	Add a polymorphic_ptr<T> smart pointer data type. It's a somewhat silly ... unique ownership smart pointer which is *deep* copyable by assuming it can call a T::clone() method to allocate a copy of the owned data. This is mostly useful with containers or other collections of uniquely owned data in C++98 where they *might* copy. With C++11 we can likely remove this in favor of move-only types and containers wrapped around those types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194315 91177308-0d34-0410-b5e6-96231b3b80d8	2013-11-09 04:06:02 +00:00