From: Tom N <nospam@codesniffer.com>
To: Jonathan Wakely <jwakely.gcc@gmail.com>
Cc: gcc-help <gcc-help@gcc.gnu.org>
Subject: Re: -fsanitize=undefined behavior
Date: Thu, 30 Apr 2020 18:58:05 -0400 (EDT) [thread overview]
Message-ID: <1924531380.192357.1588287485150@email.ionos.com> (raw)
In-Reply-To: <CAH6eHdRXFzFn17CVdpz6S0sWqJixzLboxTm+othc2GksVWnBgw@mail.gmail.com>
> On April 30, 2020 at 5:57 PM Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
> The man page says:
> "Unlike other similar options, -fsanitize=float-divide-by-zero is not enabled by -fsanitize=undefined" and "Unlike other similar options,-fsanitize=float-cast-overflow is not enabled by -fsanitize=undefined"
> So it seems reasonable to assume that all the other suboptions are enabled by -fsanitize=undefined, and if you want *all* of them then use -fsanitize=undefined -fsanitize=float-divide-by-zero-fsanitize=float-cast-overflow
Thanks for the tip. Any reason the description of -fsanitize=undefined doesn't include something like, "If the -fsanitize=undefined option is enabled all sub-options will be enabled unless otherwise specified." so it's clear?
next prev parent reply other threads:[~2020-04-30 22:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 20:30 Tom N
2020-04-30 21:57 ` Jonathan Wakely
2020-04-30 22:58 ` Tom N [this message]
2020-05-01 11:39 ` Jonathan Wakely
2020-05-01 17:13 ` Tom N
2020-05-01 18:17 ` Jonathan Wakely
2020-05-01 20:53 ` Tom N
2020-05-01 13:38 ` Segher Boessenkool
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