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PR lto/66180 * ipa-devirt.c (type_with_linkage): Check that TYPE_STUB_DECL is set; check for assembler name at LTO time. (type_in_anonymous_namespace): Remove hacks, check that all anonymous types are called "<anon>" (odr_type_p): Simplify; add check for "<anon>" (odr_subtypes_equivalent): Add odr_type_p check. * tree.c (need_assembler_name_p): Even anonymous namespace needs assembler name. * mangle.c (mangle_decl): Mangle anonymous namespace types as "<anon>". * g++.dg/lto/pr66180_0.C: New testcase. * g++.dg/lto/pr66180_1.C: New testcase. From-SVN: r223633
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