Microsoft Releases Source For Its GDB/LLDB Debug Engine
Visual Studio 2015 is making use of this debug engine code in order to debug C++ programs on Android and iOS via GDB and LLDB. The code Microsoft released is under the MIT license.
Beyond pushing out this code, Microsoft has also reiterated their desire to further improve LLVM's LLDB to make it more comparable to GDB. Many organizations have been putting their weight behind LLDB given that the code-base is much more modern and cleaner than GDB and GCC, the more liberal license, etc. Valve and other game developers are also among the companies working to improve LLDB.
More details on Microsoft's latest open-source actions can be found via the MSDN blog.