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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109473] [10/11/12/13 Regression] ICE during
 GIMPLE pass: vect: verify_gimple failed with -O1 -ftree-loop-vectorize since
 r10-4076-g82e8e335f917b9
Date: Wed, 12 Apr 2023 08:00:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109473

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot =
gnu.org

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.  The following gets rid of undefined behavior and makes=
 it
ICE with -fno-checking as well (but in forwprop then).

struct spa_buffer {
  __UINT32_TYPE__ *metas;
};
void do_port_use_buffers(struct spa_buffer **buffers, void *mem)
{=20
  for (int i =3D 0; i < 128; i++) {
    void *endptr;
    for (int j =3D 0; j < 128; j++)
      endptr =3D (void *)((__UINTPTR_TYPE__)endptr + buffers[i]->metas[j]);
    if (endptr > mem)
      return;
  }
}=