vlib: use flexible array in vlib_buffer for GCC-10

GCC-10 increase overflows-related warnings but gets confused by 0-length
arrays. Use C99 flexible length array instead.

Type: fix

Change-Id: Ie62cfa8faaa408479a598785fd3f06ffd0233c7a
Signed-off-by: Benoît Ganne <bganne@cisco.com>
(cherry picked from commit 049d0b438ef2971181549f195c7e0338cd1c60f4)

diff --git a/src/vlib/buffer.h b/src/vlib/buffer.h
index 02b6526..4e44a7a 100644 (file)
--- a/src/vlib/buffer.h
+++ b/src/vlib/buffer.h
@@ -178,7 +178,7 @@ typedef union
     u8 pre_data[VLIB_BUFFER_PRE_DATA_SIZE];
 
     /** Packet data */
-    u8 data[0];
+    u8 data[];
   };
 #ifdef CLIB_HAVE_VEC128
   u8x16 as_u8x16[4];