PR c++/13113
* init.c (build_offset_ref): Improve error recovery for invalid
uses of non-static member functions.
PR c++/13854
* cp-tree.h (cp_build_type_attribute_variant): New function.
* class.c (build_clone): Use cp_build_type_attribute_variant.
* decl.c (duplicate_decls): Likewise.
* pt.c (copy_default_args_to_explicit_spec): Likewise.
(tsubst_function_type): Likewise.
* tree.c (build_exception_variant): Check attributes before
concluding that two types are the same.
(cp_build_type-attribute_variant): New method.
* typeck.c (merge_types): Use cp_build_type_attribute_variant.