From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=tp+B=6F=xry111.site=xry111@sourceware.org>
Received: from xry111.site (xry111.site [89.208.246.23])
	by sourceware.org (Postfix) with ESMTPS id 0B1733858C50
	for <gcc-help@gcc.gnu.org>; Thu,  9 Feb 2023 10:59:52 +0000 (GMT)
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 0B1733858C50
Authentication-Results: sourceware.org; dmarc=pass (p=reject dis=none) header.from=xry111.site
Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=xry111.site
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xry111.site;
	s=default; t=1675940391;
	bh=iXa9jCDrycSmOEW0C7IE5D36xNqUzbVarlXxVEk1LxM=;
	h=Subject:From:To:Date:In-Reply-To:References:From;
	b=d5XKj6d7l+csMdh/d2HpRwV1TPuBwJwYOxUdlmOEI37p2UmISu5ss1EdV+gfriqu2
	 TAK8eJQ0uU5v5uyjjAXGky/jd2/oIzdaJ9fxNq0GyzFmxsLSdCFTWGlQj64ZCH+UhM
	 iyBRdaCl7s/K50Y2FCEobRfU3624ZMj+kCMrpvAE=
Received: from localhost.localdomain (xry111.site [IPv6:2001:470:683e::1])
	(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
	 key-exchange ECDHE (P-256) server-signature ECDSA (P-384) server-digest SHA384)
	(Client did not present a certificate)
	(Authenticated sender: xry111@xry111.site)
	by xry111.site (Postfix) with ESMTPSA id 2C1D965B86;
	Thu,  9 Feb 2023 05:59:49 -0500 (EST)
Message-ID: <e1ace267294d5835f400be71a5ebd2fa8740a315.camel@xry111.site>
Subject: Re: Random Crash Observed while running program compiled with
 latest gcc
From: Xi Ruoyao <xry111@xry111.site>
To: praveen ab <praveenasb@gmail.com>, gcc-help@gcc.gnu.org
Date: Thu, 09 Feb 2023 18:59:47 +0800
In-Reply-To: <CAFtRY14PEx9R0pB8VxtoLTKUJRqNMFKM5naqxhM57Lp27z+zXw@mail.gmail.com>
References: 
	<CAFtRY14PEx9R0pB8VxtoLTKUJRqNMFKM5naqxhM57Lp27z+zXw@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
User-Agent: Evolution 3.46.3 
MIME-Version: 1.0
X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,LIKELY_SPAM_FROM,SPF_HELO_PASS,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org
List-Id: <gcc-help.gcc.gnu.org>

On Thu, 2023-02-09 at 16:26 +0530, praveen ab via Gcc-help wrote:
> Hi All,
>=20
> We are upgrading the GCC version for our existing C/C++ project.
> Earlier we were using gcc 5.4 and everything was working fine.(The
> application works fine even with gcc 7.4)
> When trying to build the application using gcc 8.1 and above we are
> observing the random crashes mostly segmentation fault.
> Any suggestions on how to debug this?
>=20
> Right now I am trying the following:
> Enabling the -Wall flag and trying to fix all the warnings
> Using GDB to inspect memory location and variables.
>=20
> Please Suggest anything else that needs to be checked?

Try -fsanitize=3Dundefined and -fsanitize=3Daddress.

--=20
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University