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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/97569] Declaring a struct in a field declaration of another
 struct. gcc and clang difference.
Date: Sun, 25 Oct 2020 22:03:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97569

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Anders Granlund from comment #0)
> The interesting thing is that if we replace  struct S  with  struct S {}=
=20
> both compilers agree on rejecting the program.

I don't see any struct S in the example program.=