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9d17a04f24
This test with invalid ^^decltype crashes. finish_decltype_type got a USING_DECL because they sometimes aren't stripped when using -freflection. We should give an error like we do for TYPE_DECL, otherwise finish_decltype_type returns NULL_TREE and eventually we crash in cp_parser_qualifying_entity after calling cp_parser_decltype. Fixed by r16-8132 which moved the cp_preserve_using_decl overriding. PR c++/124494 gcc/testsuite/ChangeLog: * g++.dg/reflect/decltype1.C: New test.
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