Portability fixes

- CFLAG gnu99 was changed to c99.
- CXXFLAG c++98 was changed to c++11.
- CFLAG -pedantic-errors was added so that non-ISO C now throws errors.
- _XOPEN_SOURCE feature test macro added and set to 600 to expose SUSv3
  and c99 definitions in modules that required them.
- Fixed tests (and bootstrap daemon logging) that were failing due to
  the altered build flags.
- Avoid string suffix misinterpretation; explicit narrowing conversion.
- Misc. additions to .gitignore to make sure build artifacts don't wind
  up in version control.

1 files changed, 2 insertions, 2 deletions

diff --git a/toxcore/TCP_server.c b/toxcore/TCP_server.c
index 0e2d0085..d9ace28a 100644
--- a/toxcore/TCP_server.c
+++ b/toxcore/TCP_server.c
@@ -619,7 +619,7 @@ static int send_routing_response(TCP_Secure_Connection *con, uint8_t rpid, const
  */
 static int send_connect_notification(TCP_Secure_Connection *con, uint8_t id)
 {
-    uint8_t data[2] = {TCP_PACKET_CONNECTION_NOTIFICATION, id + NUM_RESERVED_PORTS};
+    uint8_t data[2] = {TCP_PACKET_CONNECTION_NOTIFICATION, (uint8_t)(id + NUM_RESERVED_PORTS)};
     return write_packet_TCP_secure_connection(con, data, sizeof(data), 1);
 }
 
@@ -629,7 +629,7 @@ static int send_connect_notification(TCP_Secure_Connection *con, uint8_t id)
  */
 static int send_disconnect_notification(TCP_Secure_Connection *con, uint8_t id)
 {
-    uint8_t data[2] = {TCP_PACKET_DISCONNECT_NOTIFICATION, id + NUM_RESERVED_PORTS};
+    uint8_t data[2] = {TCP_PACKET_DISCONNECT_NOTIFICATION, (uint8_t)(id + NUM_RESERVED_PORTS)};
     return write_packet_TCP_secure_connection(con, data, sizeof(data), 1);
 }