Vedant Kumar f7e804157e [ubsan] Fix a faulty memory accessibility check
The dynamic type check needs to inspect vtables, but could crash if it
encounters a vtable pointer to inaccessible memory. In the first attempt
to fix the issue (r304437), we performed a memory accessibility check on
the wrong range of memory. This should *really* fix the problem.

Patch by Max Moroz!

Differential Revision: https://reviews.llvm.org/D34215

llvm-svn: 305489
2017-06-15 18:23:16 +00:00
2017-06-15 17:58:24 +00:00
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