From: Eric Botcazou <ebotcazou@adacore.com>
To: Marek Polacek <polacek@redhat.com>
Cc: gcc-patches@gcc.gnu.org,
"Joseph S. Myers" <joseph@codesourcery.com>,
Jakub Jelinek <jakub@redhat.com>,
Jason Merrill <jason@redhat.com>
Subject: Re: [PATCH][ubsan] Add VLA bound instrumentation
Date: Fri, 13 Sep 2013 11:23:00 -0000 [thread overview]
Message-ID: <2617895.LPJnfBXDzq@polaris> (raw)
In-Reply-To: <20130913095030.GS23899@redhat.com>
> Well, I have a patch for that, but I no longer think that ubsan should
> imply -fstack-check, since e.g.
>
> int
> main (void)
> {
> int x = -1;
> int b[x - 4];
> /* ... */
> return 0;
> }
>
> segfaults at runtime on int b[x - 4]; line when -fstack-check is used
> (even without sanitizing), so we wouldn't give proper diagnostics
> for stmts following that line...
In Ada we catch the sigsegv, turn it into an exception and unwind.
--
Eric Botcazou
next prev parent reply other threads:[~2013-09-13 10:53 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-12 12:38 Marek Polacek
2013-09-12 12:48 ` Marek Polacek
2013-09-12 16:12 ` Joseph S. Myers
2013-09-12 16:20 ` Joseph S. Myers
2013-09-12 17:15 ` Marek Polacek
2013-09-13 10:29 ` Marek Polacek
2013-09-13 11:23 ` Eric Botcazou [this message]
2013-09-13 18:01 ` Joseph S. Myers
2013-09-16 11:13 ` Marek Polacek
2013-09-16 13:39 ` Florian Weimer
2013-09-12 16:29 ` Marek Polacek
2013-09-25 13:23 ` Marek Polacek
2013-10-07 20:17 ` Marek Polacek
2013-10-15 13:25 ` Marek Polacek
2013-10-15 15:01 ` Joseph S. Myers
2013-10-24 20:35 ` Jason Merrill
2013-10-25 17:38 ` Marek Polacek
2013-10-25 19:04 ` Jason Merrill
2013-10-25 19:15 ` Marek Polacek
2013-10-25 19:30 ` Jason Merrill
2013-10-30 15:16 ` Marek Polacek
2013-10-30 16:08 ` Jason Merrill
2013-10-30 16:20 ` Marek Polacek
2013-10-30 20:55 ` Mike Stump
2013-10-30 22:46 ` Marek Polacek
2013-10-30 22:50 ` Mike Stump
2013-10-31 11:12 ` Marek Polacek
2013-10-31 3:18 ` Jason Merrill
2013-10-31 19:07 ` Marek Polacek
2013-11-01 17:35 ` Jason Merrill
2013-11-01 19:10 ` Marek Polacek
2013-11-01 20:39 ` Jason Merrill
2013-11-02 13:06 ` Marek Polacek
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