ip: fix compiling error with gcc-10
Building VPP using gcc-10 fails because of the array bounds check
error for function ip4_header_checksum(), with option field in IPv4
header exceeding the ip4_header_t bound. Fix this error by turning
off the array bounds check option for function ip4_header_checksum().
Change-Id: I68cc241ae9e403d35ac2e320549506dc6565a0b6
Type: fix
Signed-off-by: Jieqiang Wang <jieqiang.wang@arm.com>
diff --git a/src/vnet/ip/ip4_packet.h b/src/vnet/ip/ip4_packet.h
index fee0c8c..6abb6a9 100644
--- a/src/vnet/ip/ip4_packet.h
+++ b/src/vnet/ip/ip4_packet.h
@@ -43,6 +43,7 @@
#include <vnet/ip/ip_packet.h> /* for ip_csum_t */
#include <vnet/tcp/tcp_packet.h> /* for tcp_header_t */
#include <vppinfra/byte_order.h> /* for clib_net_to_host_u16 */
+#include <vppinfra/warnings.h> /* for WARN_OFF/WARN_ON macro */
/* IP4 address which can be accessed either as 4 bytes
or as a 32-bit number. */
@@ -197,6 +198,13 @@
return (void *) i + ip4_header_bytes (i);
}
+/* Turn off array bounds check due to ip4_header_t
+ option field operations. */
+
+/* *INDENT-OFF* */
+WARN_OFF(array-bounds)
+/* *INDENT-ON* */
+
always_inline u16
ip4_header_checksum (ip4_header_t * i)
{
@@ -297,6 +305,10 @@
return ~((u16) sum);
}
+/* *INDENT-OFF* */
+WARN_ON(array-bounds)
+/* *INDENT-ON* */
+
always_inline void
ip4_header_set_dscp (ip4_header_t * ip4, ip_dscp_t dscp)
{