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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/102505] [10/11/12 Regression] ICE in
 verify_sra_access_forest, at tree-sra.c:2368
Date: Mon, 27 Sep 2021 22:01:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102505

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jamborm at gcc dot gnu.org
   Last reconfirmed|                            |2021-09-27
     Ever confirmed|0                           |1
             Target|                            |x86_64-*-*
          Component|c++                         |tree-optimization
   Target Milestone|---                         |10.4
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D93516,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D93667,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D93845,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D93776,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D94598,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D96730,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D96820,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D101626
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |ice-on-valid-code

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed more reduced:
struct D  { int i;  int pad alignas(16); };
struct B : virtual D
{
  int j =3D84;
  int k =3D84;
};

struct C: B { };

int main()
{
  C c;
  if (c.j !=3D 84 || c.k !=3D 84)
    __builtin_abort();
}
---- CUT ----

Most likely  r10-6276-g1d8593070a62b.

What I don't get is why the ICE only happens on x86_64 and not on aarch64. =
 I
moved over to using alignas instead of long double to be similar on both
targets.=