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PR c++/16829 * decl.c (start_preparsed_function): Check default arguments unconditionally. * name-lookup.c (pushdecl_maybe_friend): Check default arguments of all functions and function templates. * parser.c (cp_parser_late_parsing_default_args): Check default arguments. * decl2.c (check_default_args): Set missing default arguments to error_mark_node. * g++.dg/other/default2.C: New test. * g++.dg/other/default3.C: New test. From-SVN: r109950
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