From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 16 May 2023 10:23:49 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pypyG-002ivw-LD for lore@lore.pengutronix.de; Tue, 16 May 2023 10:23:49 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pypyD-0006Qf-KM for lore@pengutronix.de; Tue, 16 May 2023 10:23:46 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=FV/e2LSI6wXZ2BrRKu1qXNVwQOgnbATxqa/SfTewITY=; b=GQDinCT6wqE/UFtCFDdu/ZexRT dhqzyeHaoHSf58DwJY8LpZ3tOSKZhPfpr76T6nth5kBJh5mgaRW+0ICSs96LINlgBc3ZtFIQspNMj rbOYDyvsd03pduQ/lZMEbXGrS6f+41YjdyFUwIyaIyzzLf7622vS1J4cOVCRUqbIGvAiIA+Zjnoen js6pW8qvb+ffIsA15BtypqpDLJGrCQIkHH7l5lCotLrhQau40PnumOKP3WK2RcWiV4CA2xbpX8Lcm THa3b/7MW7Saxn8hFf+6CYgygD5mafIzoRHQhqxgDAovHz2YXLViBmRcPkHLuMtt7GOPWNI5Wttin C4MaKljQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pypwn-004pgu-3D; Tue, 16 May 2023 08:22:17 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pypwk-004pf1-2v for barebox@lists.infradead.org; Tue, 16 May 2023 08:22:16 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pypwY-0006Hy-Sf; Tue, 16 May 2023 10:22:02 +0200 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pypwY-000YtM-7x; Tue, 16 May 2023 10:22:02 +0200 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pypwX-006rPj-7I; Tue, 16 May 2023 10:22:01 +0200 From: Sascha Hauer To: Barebox List Date: Tue, 16 May 2023 10:22:00 +0200 Message-Id: <20230516082200.1635283-1-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230516_012214_948573_0D80C80F X-CRM114-Status: UNSURE ( 9.36 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH] i.MX: HABv4: Hide NULL pointers from optimizer X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) We are derefencing pointers which are in the zero page, consequently gcc warns us with: drivers/hab/habv4.c: In function 'imx6_hab_get_status': drivers/hab/habv4.c:580:16: warning: array subscript 0 is outside array bounds of 'const struct habv4_rvt[0]' [-Warray-bounds] Yes, we really want to derefence these pointers, so silence the warning with OPTIMIZER_HIDE_VAR(). Signed-off-by: Sascha Hauer --- drivers/hab/habv4.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hab/habv4.c b/drivers/hab/habv4.c index 252e38f655..ca26773bf8 100644 --- a/drivers/hab/habv4.c +++ b/drivers/hab/habv4.c @@ -564,14 +564,17 @@ int imx6_hab_get_status(void) const struct habv4_rvt *rvt; rvt = (void *)HABV4_RVT_IMX6_OLD; + OPTIMIZER_HIDE_VAR(rvt); if (rvt->header.tag == HAB_TAG_RVT) return habv4_get_status(rvt); rvt = (void *)HABV4_RVT_IMX6_NEW; + OPTIMIZER_HIDE_VAR(rvt); if (rvt->header.tag == HAB_TAG_RVT) return habv4_get_status(rvt); rvt = (void *)HABV4_RVT_IMX6UL; + OPTIMIZER_HIDE_VAR(rvt); if (rvt->header.tag == HAB_TAG_RVT) return habv4_get_status(rvt); -- 2.39.2