From: Shengyu Huang <kumom.huang@gmail.com>
To: David Malcolm <dmalcolm@redhat.com>
Cc: GCC Development <gcc@gcc.gnu.org>
Subject: Re: [Static Analyzer] Loop handling - False positive for malloc-sm
Date: Tue, 21 Mar 2023 11:12:33 +0100 [thread overview]
Message-ID: <64B0D3A9-0DC4-4900-ACA2-C36B8FBEADF5@gmail.com> (raw)
In-Reply-To: <3b77234afb96947c9694d375b43b3096cbd45467.camel@redhat.com>
[-- Attachment #1: Type: text/plain, Size: 626 bytes --]
Hi Dave,
> On 21 Mar 2023, at 00:30, David Malcolm via Gcc <gcc@gcc.gnu.org> wrote:
>
> I implemented my own approach, with a "widening_svalue" subclass of
> symbolic value. This is widening in the Abstract Interpretation sense,
> (as opposed to the bitwise operations sense): if I see multiple values
> on successive iterations, the widening_svalue tries to simulate that we
> know the start value and the direction the variable is moving in.
I forgot to mention there is a relevant section “path selection” in the paper I mentioned several times (https://users.ece.cmu.edu/~aavgerin/papers/Oakland10.pdf).
prev parent reply other threads:[~2023-03-21 10:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-20 12:28 Pierrick Philippe
2023-03-20 23:30 ` David Malcolm
2023-03-21 8:21 ` Pierrick Philippe
2023-03-22 18:19 ` David Malcolm
2023-03-23 8:06 ` Pierrick Philippe
2023-03-21 10:01 ` Shengyu Huang
2023-03-22 18:34 ` David Malcolm
2023-03-21 10:12 ` Shengyu Huang [this message]
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