re PR c/20519 (completed type not selected properly with typeof)

        PR c/20519
        * c-decl.c (c_finish_incomplete_decl): Update complete_array_type call.
        (build_compound_literal): Likewise.  Propagate decl type into the
        initializer.
        (finish_decl): Likewise.  Use new return value from complete_array_type
        for zero sized arrays.
        (complete_array_type): Move ...
        * c-common.c (complete_array_type): ... here.  Change first argument
        to pointer-to-type-node.  Consistently use sizetype for the index
        except for zero sized arrays.  Detect zero sized arrays for pedantic
        mode diagnostics.  Create a new type node instead of modifying the
        old node in place.
        * c-tree.h (complete_array_type): Move decl ...
        * c-common.h (complete_array_type): ... here.
cp/
        * decl.c (cp_complete_array_type): Rename from complete_array_type.
        Use the new complete_array_type in c-common.c.  Update all callers.
        * cp-tree.h (cp_complete_array_type): Update to match.

From-SVN: r97223