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From: Florian Weimer <fweimer@redhat.com>
To: gcc@gcc.gnu.org
Subject: -Wint-conversion, -Wincompatible-pointer-types, -Wpointer-sign: Are they hiding constraint C violations?
Date: Thu, 10 Nov 2022 19:25:21 +0100	[thread overview]
Message-ID: <87mt8ysm3y.fsf@oldenburg.str.redhat.com> (raw)

GCC accepts various conversions between pointers and ints and different
types of pointers by default, issuing a warning.

I've been reading the (hopefully) relevant partso f the C99 standard,
and it seems to me that C implementations are actually required to
diagnose errors in these cases because they are constraint violations:
the types are not compatible.

Is this interpretation correct?

Sorry if this questions this is more appropriate for the gcc-help list.

Thanks,
Florian


             reply	other threads:[~2022-11-10 18:25 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-10 18:25 Florian Weimer [this message]
2022-11-10 18:43 ` Marek Polacek
2022-11-10 19:16   ` Florian Weimer
2022-11-10 23:05     ` Jonathan Wakely
2022-11-10 23:33     ` Joseph Myers
2022-11-11  9:21     ` David Brown

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