On Thu, Jul 25, 2013 at 04:13:29PM -0400, Jason Merrill wrote:
> Otherwise, looks fine.  If nobody else has comments, go ahead and
> check it in next week.

I had to make a few changes since, particularly:

 - [ubsan] Add -static-libubsan
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01467.html
 - [ubsan] Don't try to sanitize shifts outside of functions
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01468.html
 - [ubsan] Use build_constructor_va where possible
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01469.html
 - [ubsan] Add bootstrap-ubsan.mk
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01470.html
 - [ubsan] Rename obsolete variable
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01473.html
 - [ubsan] Instrument expr only when doing shift or division
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01529.html
 - [ubsan] Improve documentation of -fsanitize=undefined
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01540.html
 - [ubsan] Add missing ubsan tests in g++.dg/dg.exp
   http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01563.html

There are still at least two issues though, which is why
bootstrap with -fsanitize=undefined fails:

http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01480.html
http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01536.html

They seem to be relatively minor, but we'll have to deal
with them eventually.

Regtested/bootstrapped on both ppc64-linux and x86_64 linux,
so, ok for trunk?

        Marek

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