[Bug libstdc++/110572] ld.lld: error: duplicate symbol: std::type_info::operator==(std::type_info const&) const

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110572

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is the fix I'm suggesting:

--- a/libstdc++-v3/libsupc++/typeinfo
+++ b/libstdc++-v3/libsupc++/typeinfo
@@ -188,6 +188,9 @@ namespace std
 #endif

 #if __GXX_TYPEINFO_EQUALITY_INLINE || __cplusplus > 202002L
+# if ! __GXX_TYPEINFO_EQUALITY_INLINE
+  [[__gnu__::__always_inline__]]
+# endif
   _GLIBCXX23_CONSTEXPR inline bool
   type_info::operator==(const type_info& __arg) const _GLIBCXX_NOEXCEPT
   {