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From: "zhroma at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/98533] [11/12/13/14 Regression] ICE: 'verify_type' failed
Date: Sat, 14 Oct 2023 07:16:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98533

Roman Zhuykov <zhroma at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zhroma at gcc dot gnu.org

--- Comment #9 from Roman Zhuykov <zhroma at gcc dot gnu.org> ---
Just adding another example where I caught the same error:

$ cat test.cc=20
class IR;
class Pass {
public:
    explicit Pass(IR *ir) : ir_(ir) {}
    virtual ~Pass() =3D default;
    IR *ir_ {nullptr};
};
class PassManager {
public:
    template <typename T> void RunPass() { T pass(ir_); }
    IR *ir_ {nullptr};
};
class IR final {
public:=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20
    template <typename T> void RunPass() { pass_manager_.RunPass<T>(); }
    PassManager pass_manager_;
};
class ThePass : Pass {
public:
    explicit ThePass(IR *ir) : Pass(ir) {}
    ThePass(const ThePass &) =3D delete;
    template <typename Func =3D bool (*)(void *)> void Bar(void *inst, Func=
 func
=3D [](void *) {});
};

void foo(IR *ir) { ir->RunPass<ThePass>(); }

$ g++ -fchecking -g -c test.cc  # any g++ from 8 to 13
test.cc:18:7: error: type variant has different =E2=80=98TYPE_FIELDS=E2=80=
=99
   18 | class ThePass : Pass {
      |       ^~~~~~~
 <record_type 0x7f44b1bbd738 ThePass ...=