CI: Add warning exemptions for Sun C (suncc-5.14) on Solaris 10

[tcpdump] / print-frag6.c

diff --git a/print-frag6.c b/print-frag6.c
index 16e8a4b21926b993f7e1c811dd2ff477695dae87..abc2a6367380927c6fe242c06b6f7a7df34717e2 100644 (file)
--- a/print-frag6.c
+++ b/print-frag6.c
@@ -21,12 +21,11 @@
 
 /* \summary: IPv6 fragmentation header printer */
 
-#ifdef HAVE_CONFIG_H
 #include <config.h>
-#endif
 
 #include "netdissect-stdinc.h"
 
+#define ND_LONGJMP_FROM_TCHECK
 #include "netdissect.h"
 #include "extract.h"
 
@@ -42,24 +41,24 @@ frag6_print(netdissect_options *ndo, const u_char *bp, const u_char *bp2)
        dp = (const struct ip6_frag *)bp;
        ip6 = (const struct ip6_hdr *)bp2;
 
-       if (ndo->ndo_vflag) {
-               ND_PRINT("frag (0x%08x:%u|%zu)",
-                        GET_BE_U_4(dp->ip6f_ident),
-                        GET_BE_U_2(dp->ip6f_offlg) & IP6F_OFF_MASK,
+       ND_PRINT("frag (");
+       if (ndo->ndo_vflag)
+               ND_PRINT("0x%08x:", GET_BE_U_4(dp->ip6f_ident));
+       else
+               ND_TCHECK_4(dp->ip6f_ident);
+       ND_PRINT("%u|", GET_BE_U_2(dp->ip6f_offlg) & IP6F_OFF_MASK);
+       if ((bp - bp2) + sizeof(struct ip6_frag) >
+           sizeof(struct ip6_hdr) + GET_BE_U_2(ip6->ip6_plen))
+               ND_PRINT("[length < 0] (invalid))");
+       else
+               ND_PRINT("%zu)",
                         sizeof(struct ip6_hdr) + GET_BE_U_2(ip6->ip6_plen) -
-                               (bp - bp2) - sizeof(struct ip6_frag));
-       } else {
-               ND_PRINT("frag (%u|%zu)",
-                        GET_BE_U_2(dp->ip6f_offlg) & IP6F_OFF_MASK,
-                        sizeof(struct ip6_hdr) + GET_BE_U_2(ip6->ip6_plen) -
-                                (bp - bp2) - sizeof(struct ip6_frag));
-       }
+                        (bp - bp2) - sizeof(struct ip6_frag));
 
        /* it is meaningless to decode non-first fragment */
        if ((GET_BE_U_2(dp->ip6f_offlg) & IP6F_OFF_MASK) != 0)
                return -1;
-       else
-       {
+       else {
                ND_PRINT(" ");
                return sizeof(struct ip6_frag);
        }