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Here we emit a bogus "type/value mismatch" error because convert_template_argument gets a USING_DECL instead of an expected TYPE_DECL. When we are parsing a reflect-expression we set cp_preserve_using_decl not to strip USING_DECLs. The flag should probably go, subject to 124169, but meanwhile we can at least move overriding cp_preserve_using_decl below, just before the call to cp_parser_lookup_name_simple, where it actually matters. The wrong error comes from _reflection_name -> _nested_name_specifier_opt which happens before cp_parser_identifier. PR c++/124472 gcc/cp/ChangeLog: * parser.cc (cp_parser_reflection_name): Move the cp_preserve_using_decl overriding below, before cp_parser_lookup_name_simple. gcc/testsuite/ChangeLog: * g++.dg/reflect/using2.C: New test. Reviewed-by: Jason Merrill <jason@redhat.com>
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