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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/96304] Possible mis-compile of SQLite for ARM using gcc
 8.3.0 and -O2
Date: Fri, 24 Jul 2020 07:10:02 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96304

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Martin Li=C5=A1ka from comment #3)
> > But, are we violating aliasing rules here?  What am I missing?
>=20
> Likely you are, but I must admit it's sometimes quite difficult to find t=
hat.
> From quickly looking at the function, you may violate it here:
>=20
>   MemJournal *p =3D (MemJournal*)pJfd;
>=20
> maybe
>=20
> MemJournal *p =3D (MemJournal*)(char*)pJfd;
>=20
> can solve it.
> Unfortunately I can't reproduce it on my x86_64-linux box.

An intermediate cast does never solve any strict-aliasing issue.=