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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/94951] [8/9/10/11 Regression] dereferencing type-punned
 pointer will break strict-aliasing rules when using super class for a
 template type
Date: Tue, 05 May 2020 16:28:02 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94951

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 48456
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D48456&action=3Dedit
gcc11-pr94951.patch

Untested fix.  It seems just wrong to call the c-family strict_aliasing_war=
ning
for dependent types, we shouldn't query alias sets of dependent types and do
any decisions based on what that gives.=