* process.c (Fnetwork_interface_info): Avoid possibility of int overflow.

diff --git a/src/ChangeLog b/src/ChangeLog
index bea6ffd..c4c7e4e 100644 (file)
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -3,6 +3,7 @@
        * process.c (list_processes_1, create_pty, read_process_output):
        (exec_sentinel): Remove vars that were set but not used.
        (create_pty): Remove unnecessary "volatile"s.
+       (Fnetwork_interface_info): Avoid possibility of int overflow.
 
        * bytecode.c (exec_byte_code): Rename local to avoid shadowing.
 

diff --git a/src/process.c b/src/process.c
index 57b76b6..50a068b 100644 (file)
--- a/src/process.c
+++ b/src/process.c
@@ -3949,7 +3949,7 @@ FLAGS is the current flags of the interface.  */)
       const struct ifflag_def *fp;
       int fnum;
 
-      any++;
+      any = 1;
       for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++)
        {
          if (flags & fp->flag_bit)
@@ -3977,7 +3977,7 @@ FLAGS is the current flags of the interface.  */)
       register struct Lisp_Vector *p = XVECTOR (hwaddr);
       int n;
 
-      any++;
+      any = 1;
       for (n = 0; n < 6; n++)
        p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]);
       elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr);
@@ -3989,7 +3989,7 @@ FLAGS is the current flags of the interface.  */)
 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
   if (ioctl (s, SIOCGIFNETMASK, &rq) == 0)
     {
-      any++;
+      any = 1;
 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
       elt = conv_sockaddr_to_lisp (&rq.ifr_netmask, sizeof (rq.ifr_netmask));
 #else
@@ -4003,7 +4003,7 @@ FLAGS is the current flags of the interface.  */)
 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
   if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0)
     {
-      any++;
+      any = 1;
       elt = conv_sockaddr_to_lisp (&rq.ifr_broadaddr, sizeof (rq.ifr_broadaddr));
     }
 #endif
@@ -4013,7 +4013,7 @@ FLAGS is the current flags of the interface.  */)
 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
   if (ioctl (s, SIOCGIFADDR, &rq) == 0)
     {
-      any++;
+      any = 1;
       elt = conv_sockaddr_to_lisp (&rq.ifr_addr, sizeof (rq.ifr_addr));
     }
 #endif