GCC 6.4 Release Candidate available from gcc.gnu.org

[Eric Botcazou]

> OK to re-apply then on the branch(es) if it fixes the bootstrap issue.

I was wrong, it's PR sanitizer/78532 + PR sanitizer/78992 instead...

2016-11-30  Maxim Ostapenko  <m.ostapenko@samsung.com>

       PR sanitizer/78532
       * sanitizer_common/sanitizer_platform_limits_posix.h
       (__sanitizer_sigaction): Adjust for sparc targets and various Glibc
       versions.

2017-01-10  James Clarke  <jrtc27@jrtc27.com>

	PR sanitizer/78992
	* sanitizer_common/sanitizer_platform_limits_posix.h
	(struct __sanitizer_sigaction): Cherry-pick upstream r291561.

Backported onto the branch after testing on SPARC64/Linux.

-- 
Eric Botcazou