- {
- for (x = fields; x; prev = x, x = TREE_CHAIN (x))
- {
- if (DECL_NAME (x) == 0)
- {
- if (! ANON_AGGR_TYPE_P (TREE_TYPE (x)))
- continue;
- TYPE_FIELDS (TREE_TYPE (x))
- = delete_duplicate_fields_1 (field, TYPE_FIELDS (TREE_TYPE (x)));
- if (TYPE_FIELDS (TREE_TYPE (x)) == 0)
- {
- if (prev == 0)
- fields = TREE_CHAIN (fields);
- else
- TREE_CHAIN (prev) = TREE_CHAIN (x);
- }
- }
- else if (TREE_CODE (field) == USING_DECL)
- /* A using declaration is allowed to appear more than
- once. We'll prune these from the field list later, and
- handle_using_decl will complain about invalid multiple
- uses. */
- ;
- else if (DECL_NAME (field) == DECL_NAME (x))
- {
- if (TREE_CODE (field) == CONST_DECL
- && TREE_CODE (x) == CONST_DECL)
- cp_error_at ("duplicate enum value `%D'", x);
- else if (TREE_CODE (field) == CONST_DECL
- || TREE_CODE (x) == CONST_DECL)
- cp_error_at ("duplicate field `%D' (as enum and non-enum)",
- x);
- else if (DECL_DECLARES_TYPE_P (field)
- && DECL_DECLARES_TYPE_P (x))
- {
- if (same_type_p (TREE_TYPE (field), TREE_TYPE (x)))
- continue;
- cp_error_at ("duplicate nested type `%D'", x);
- }
- else if (DECL_DECLARES_TYPE_P (field)
- || DECL_DECLARES_TYPE_P (x))
- {
- /* Hide tag decls. */
- if ((TREE_CODE (field) == TYPE_DECL
- && DECL_ARTIFICIAL (field))
- || (TREE_CODE (x) == TYPE_DECL
- && DECL_ARTIFICIAL (x)))
- continue;
- cp_error_at ("duplicate field `%D' (as type and non-type)",
- x);
- }
- else
- cp_error_at ("duplicate member `%D'", x);
- if (prev == 0)
- fields = TREE_CHAIN (fields);
- else
- TREE_CHAIN (prev) = TREE_CHAIN (x);
- }
- }
- }
- return fields;