Fix PR11073 by adding the argument type information to the decl we construct
for the function type. Update a testcase accordingly.

Patch initially by Anders Waldenborg!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142700 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed