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From: "user202729 at protonmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/110137] implement clang -fassume-sane-operator-new
Date: Wed, 05 Jun 2024 08:23:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110137

--- Comment #14 from user202729 <user202729 at protonmail dot com> ---
Regarding alias analysis. The current implementaion is such that:

compiler      | flag             | can alias?| can modify global?|
gcc           | sane             | no        | no                | << NEW
              | no-sane [default]| no        | yes               |
clang         | sane [default]   | no        | no                |
              | no-sane          | yes       | yes               |
[the standard]|                  | no        | yes               |

As pointed out in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110035#c13=
 , gcc
already assume operator new's retuned pointer cannot alias any existing
pointer. So no change is needed there.=