From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Green Subject: [PATCH v4 11/23] rte_mbuf.h: explicit cast restricting ptrdiff to uint16 Date: Mon, 14 May 2018 13:10:22 +0800 Message-ID: <152627462287.53156.1972221889368883834.stgit@localhost.localdomain> References: <152627436523.53156.4398253089110011263.stgit@localhost.localdomain> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: dev@dpdk.org Return-path: Received: from mail.warmcat.com (mail.warmcat.com [163.172.24.82]) by dpdk.org (Postfix) with ESMTP id 7D6941C68F for ; Mon, 14 May 2018 07:10:26 +0200 (CEST) In-Reply-To: <152627436523.53156.4398253089110011263.stgit@localhost.localdomain> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" /projects/lagopus/src/dpdk/build/include/rte_common.h:141:34: warning: conversion from 'long unsigned int' to 'uint16_t' {aka 'short unsigned int'} may change value [-Wconversion] #define RTE_PTR_DIFF(ptr1, ptr2) ((uintptr_t)(ptr1) - (uintptr_t)(ptr2)) ^ /projects/lagopus/src/dpdk/build/include/rte_mbuf.h:1360:13: note: in expansion of macro 'RTE_PTR_DIFF' *buf_len = RTE_PTR_DIFF(shinfo, buf_addr); Signed-off-by: Andy Green --- lib/librte_mbuf/rte_mbuf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index a27dbb878..0580ec8a0 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -1358,7 +1358,7 @@ rte_pktmbuf_ext_shinfo_init_helper(void *buf_addr, uint16_t *buf_len, shinfo->fcb_opaque = fcb_opaque; rte_mbuf_ext_refcnt_set(shinfo, 1); - *buf_len = RTE_PTR_DIFF(shinfo, buf_addr); + *buf_len = (uint16_t)RTE_PTR_DIFF(shinfo, buf_addr); return shinfo; }