r299989 fixes the underlying issue by waiting long enough to late parsed
arguments to be processed before doing an calculating the hash.

r298742
[ODRHash] Add error messages for mismatched parameters in methods.

r298754
[ODRHash] Add support for array and decayed types.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@300001 91177308-0d34-0410-b5e6-96231b3b80d8