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BUILD: server: shut a bogus gcc warning on certain ubuntu

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On ubuntu 20.04 and 22.04 with gcc 9.4 and 11.4 respectively, we get
the following warning:

  src/server.c: In function 'srv_update_addr_port':
  src/server.c:4027:3: warning: 'new_port' may be used uninitialized in this function [-Wmaybe-uninitialized]
   4027 |   _srv_event_hdl_prepare_inetaddr(&cb_data.addr, &s->addr, s->svc_port,
        |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4028 |                                   ((ip_change) ? &sa : &s->addr),
        |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4029 |                                   ((port_change) ? new_port : s->svc_port),
        |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4030 |                                   1);
        |                                   ~~

It's clearly wrong, port_change only changes from 0 to anything else
*after* assigning new_port. Let's just preset new_port to zero instead
of trying to play smart with the compiler.
This commit is contained in:
Willy Tarreau 2023-11-30 17:48:03 +01:00
parent 7f58e9f1e0
commit 822d45678f
1 changed files with 1 additions and 1 deletions
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src/server.c
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@ -3902,7 +3902,7 @@ const char *srv_update_addr_port(struct server *s, const char *addr, const char
struct sockaddr_storage sa;
int ret;
char current_addr[INET6_ADDRSTRLEN];
uint16_t current_port, new_port;
uint16_t current_port, new_port = 0;
struct buffer *msg;
int ip_change = 0;
int port_change = 0;