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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68608] [concepts] ICE with explicit class instantiation
Date: Sat, 24 Jul 2021 01:07:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D68608

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #1)
> Still ICEs on current trunk with -std=3Dc++17 -fconcepts, and also with
> -std=3Dc++2a after modernising the code:

I can't get this to crash with r12-2133.
But the funny thing is clang crashes with a similar issue as what GCC had:
<source>:6:7: error: definition with same mangled name '_ZN1AIiE1fEv' as
another definition
  int f() requires (!C<T>) { return 2; }
      ^
<source>:5:7: note: previous definition is here
  int f() requires C<T> { return 1; }
      ^=