Patch ping

[Jakub Jelinek]

Hi!

I'd like to ping 2 patches:

- UBSAN -fsanitize=pointer-overflow support
  - http://gcc.gnu.org/ml/gcc-patches/2017-06/msg01365.html

- noipa attribute addition                                                      
                                                                   
  http://gcc.gnu.org/ml/gcc-patches/2016-12/msg01501.html                       
                                                                   

        Jakub