PR c++/5388
        * call.c (conditional_conversion): Don't consider implicit
        conversions if T2 is a base of T1.
        * cp-tree.h (DERIVED_FROM_P, UNIQUELY_DERIVED_FROM_P): Make boolean.
        (ACCESSIBLY_UNIQUELY_DERIVED_P, PUBLICLY_UNIQUELY_DERIVED_P): Likewise.

        * parser.c (cp_parser_primary_expression): Convert a static data
        member from reference.

From-SVN: r66844