diff options
| -rw-r--r-- | src/nat/gnunet-helper-nat-client.c | 11 | ||||
| -rw-r--r-- | src/nat/gnunet-helper-nat-server.c | 11 |
2 files changed, 22 insertions, 0 deletions
diff --git a/src/nat/gnunet-helper-nat-client.c b/src/nat/gnunet-helper-nat-client.c index 9768dd8563..359e529b0f 100644 --- a/src/nat/gnunet-helper-nat-client.c +++ b/src/nat/gnunet-helper-nat-client.c @@ -67,6 +67,17 @@ #endif /** + * Call memcpy() but check for @a n being 0 first. In the latter + * case, it is now safe to pass NULL for @a src or @a dst. + * Unlike traditional memcpy(), returns nothing. + * + * @param dst destination of the copy, may be NULL if @a n is zero + * @param src source of the copy, may be NULL if @a n is zero + * @param n number of bytes to copy + */ +#define GNUNET_memcpy(dst,src,n) do { if (0 != n) { (void) memcpy (dst,src,n); } } while (0) + +/** * Must match IP given in the server. */ #define DUMMY_IP "192.0.2.86" diff --git a/src/nat/gnunet-helper-nat-server.c b/src/nat/gnunet-helper-nat-server.c index f356491526..b8f499b4d0 100644 --- a/src/nat/gnunet-helper-nat-server.c +++ b/src/nat/gnunet-helper-nat-server.c @@ -71,6 +71,17 @@ #endif /** + * Call memcpy() but check for @a n being 0 first. In the latter + * case, it is now safe to pass NULL for @a src or @a dst. + * Unlike traditional memcpy(), returns nothing. + * + * @param dst destination of the copy, may be NULL if @a n is zero + * @param src source of the copy, may be NULL if @a n is zero + * @param n number of bytes to copy + */ +#define GNUNET_memcpy(dst,src,n) do { if (0 != n) { (void) memcpy (dst,src,n); } } while (0) + +/** * Should we print some debug output? */ #define VERBOSE 0 |