PR c++/18093
* search.c (current_scope): Return the innermost non-block scope,
not the innermost non-block, non-namespace scope.
(at_namespace_scope_p): Adjust accordingly.
(dfs_accessible_post): Do not pass namespaces to is_friend.
(dfs_walk_once_accessible_r): Likewise.
* decl.c (grokvardecl): Adjust call to current_scope.
(build_enumerator): Likewise.
* parser.c (cp_parser_using_declaration): Likewise.
(cp_parser_direct_declarator): Use at_namespace_scope_p instead of
current_scope.
(cp_parser_class_head): Adjust call to current_scope.
* name-lookup.c (do_namespace_alias): Set the DECL_CONTEXT for the
alias.
PR c++/18020
* pt.c (tusbst_copy_and_build): Resolve enumeration constants to
their underlying values.
PR c++/18161
* typeck.c (build_binary_op): Honor build_type, even when in a
template.
PR c++/18093
* g++.dg/lookup/ns2.C: New test.
PR c++/18020
* g++.dg/template/enum4.C: New test.
PR c++/18161
* g++.dg/template/expr1.C: New test.
From-SVN: r89627
