PR c++/17473
* name-lookup.c (supplement_binding): Do not allow typedefs to be
redefined in class scope.
PR c++/18285
* parser.c (cp_parser_set_decl_type_spec): Do not try to allow
redefinitions of builtin types other that "bool" or "wchar_t".
PR c++/17473
* g++.dg/tc1/dr56.C: Remove.
* g++.dg/template/typedef1.C: Add dg-error markers.
* g++.old-deja/g++.other/typedef7.C: Likewise.
PR c++/18285
* g++.dg/parse/typedef7.C: New test.
From-SVN: r91254
