re PR sanitizer/63802 (UBSan doesn't catch misaligned access if address is 16-bytes (or more) aligned)

2014-11-18  Yury Gribov  <y.gribov@samsung.com>

	PR sanitizer/63802

gcc/
	* stor-layout.c (min_align_of_type): Respect user alignment
	more.

gcc/testsuite/
	* c-c++-common/ubsan/pr63802.c: New test.

From-SVN: r217689