Sean Callanan fc670cf6d0 Don't crash when trying to capture persistent variables in a block.
Reports an error instead.  We can fix this later to make persistent variables
work, but right now we hit an LLVM assertion if we get this wrong.

<rdar://problem/27770298>

llvm-svn: 279850
2016-08-26 18:12:39 +00:00
..