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examples: gnrc_networking uses variable it hasn't access to anymore

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This commit is contained in:
Martine Lenders 2016-06-06 19:15:08 +02:00
parent 69b1ef3a41
commit 634adf37d8
1 changed files with 7 additions and 2 deletions
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9
examples/gnrc_networking/udp.c
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@ -51,12 +51,15 @@ static void send(char *addr_str, char *port_str, char *data, unsigned int num,
for (unsigned int i = 0; i < num; i++) { for (unsigned int i = 0; i < num; i++) {
gnrc_pktsnip_t *payload, *udp, *ip; gnrc_pktsnip_t *payload, *udp, *ip;
unsigned payload_size;
/* allocate payload */ /* allocate payload */
payload = gnrc_pktbuf_add(NULL, data, strlen(data), GNRC_NETTYPE_UNDEF); payload = gnrc_pktbuf_add(NULL, data, strlen(data), GNRC_NETTYPE_UNDEF);
if (payload == NULL) { if (payload == NULL) {
puts("Error: unable to copy data to packet buffer"); puts("Error: unable to copy data to packet buffer");
return; return;
} }
/* store size for output */
payload_size = (unsigned)payload->size;
/* allocate UDP header, set source port := destination port */ /* allocate UDP header, set source port := destination port */
udp = gnrc_udp_hdr_build(payload, port, port); udp = gnrc_udp_hdr_build(payload, port, port);
if (udp == NULL) { if (udp == NULL) {
@ -77,8 +80,10 @@ static void send(char *addr_str, char *port_str, char *data, unsigned int num,
gnrc_pktbuf_release(ip); gnrc_pktbuf_release(ip);
return; return;
} }
printf("Success: send %u byte to [%s]:%u\n", (unsigned)payload->size, /* access to `payload` was implicitly given up with the send operation above
addr_str, port); * => use temporary variable for output */
printf("Success: send %u byte to [%s]:%u\n", payload_size, addr_str,
port);
xtimer_usleep(delay); xtimer_usleep(delay);
} }
} }