aa2b105511
CWG 1879 - Inadequate definition of alignment requirement. * cp-tree.h (ALIGNOF_EXPR_STD_P): New. * typeck.c (cxx_sizeof_or_alignof_type): Add std_alignof parm. (cxx_sizeof_expr, cxx_sizeof_nowarn, cxx_alignas_expr) (cxx_alignof_expr): Pass it. * parser.c (cp_parser_unary_expression): Pass it. * pt.c (tsubst_copy): Copy it. (tsubst_copy_and_build): Pass it. * decl.c (fold_sizeof_expr): Pass it. From-SVN: r259578