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Date: Sun, 30 Sep 2012 17:17:37 -0600 From: Jason Gunthorpe <jgunthorpe@...idianresearch.com> To: linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH] Fix userspace compilation of ip_tables.h/ip6_tables.h in C++ mode The implicit cast from void * is not allowed for C++ compilers, and the arithmetic on void * generates warnings in C++ mode. $ g++ -c t.cc ip_tables.h:221:24: warning: pointer of type 'void *' used in arithmetic ip_tables.h:221:24: error: invalid conversion from 'void*' to 'xt_entry_target*' Signed-off-by: Jason Gunthorpe <jgunthorpe@...idianresearch.com> --- include/linux/netfilter_ipv4/ip_tables.h | 2 +- include/linux/netfilter_ipv6/ip6_tables.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/netfilter_ipv4/ip_tables.h b/include/linux/netfilter_ipv4/ip_tables.h index db79231..050ad8a 100644 --- a/include/linux/netfilter_ipv4/ip_tables.h +++ b/include/linux/netfilter_ipv4/ip_tables.h @@ -226,7 +226,7 @@ struct ipt_get_entries { static __inline__ struct xt_entry_target * ipt_get_target(struct ipt_entry *e) { - return (void *)e + e->target_offset; + return (struct xt_entry_target *)((__u8 *)e + e->target_offset); } /* diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h index 08c2cbb..3349bf1 100644 --- a/include/linux/netfilter_ipv6/ip6_tables.h +++ b/include/linux/netfilter_ipv6/ip6_tables.h @@ -263,7 +263,7 @@ struct ip6t_get_entries { static __inline__ struct xt_entry_target * ip6t_get_target(struct ip6t_entry *e) { - return (void *)e + e->target_offset; + return (struct xt_entry_target *)((__u8 *)e + e->target_offset); } /* -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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