Add nd_{v}snprintf() routines/wrappers.

Some versions of the MSVC runtime library have a non-C99-compliant
vsnprintf(), which we want to avoid.  On Windows, use snprintf() and
vsnprintf() for VS 2015 and later, where they both exist in
C99-compliant forms, and wrap _{v}snprintf_s() otherwise (they're
guaranteed to do the null termination that we want).

1 files changed, 1 insertions, 1 deletions

diff --git a/print-fr.c b/print-fr.c
index d9ac455b..a95b56f2 100644
--- a/print-fr.c
+++ b/print-fr.c
@@ -152,7 +152,7 @@ q922_string(netdissect_options *ndo, const u_char *p, u_int length)
     memset(buffer, 0, sizeof(buffer));
 
     if (parse_q922_header(ndo, p, &dlci, &addr_len, &flags, length) == 1){
-        snprintf(buffer, sizeof(buffer), "DLCI %u", dlci);
+        nd_snprintf(buffer, sizeof(buffer), "DLCI %u", dlci);
     }
 
     return buffer;