fix some subtle bugs handling the mix of cvr qualifiers, addr spaces, 
and gc attrs.  Add an assert to check that we never 
get ExtQualType(ExtQualType(T)).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64970 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed