tree 9f5b63b76d2234499eec9263896b573ef0f554dd
parent 5e02f6525d109c42650575c352bd2fdb14ed4193
author Douglas Gregor <dgregor@apple.com> 1348516578 +0000
committer Douglas Gregor <dgregor@apple.com> 1348516578 +0000

Make sure that we don't end up making an #undef'd macro visible after
the fact. Test cases will come when we're actually (de-)serializing
macro history.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164549 91177308-0d34-0410-b5e6-96231b3b80d8