Only dump up to 512 bytes.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4756 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/vtc_log.c

@@ -172,6 +172,7 @@ void
 vtc_dump(struct vtclog *vl, unsigned lvl, const char *pfx, const char *str)
 {
 	int nl = 1;
+	unsigned l;
 
 	CHECK_OBJ_NOTNULL(vl, VTCLOG_MAGIC);
 	assert(lvl < NLEAD);
@@ -183,7 +184,12 @@ vtc_dump(struct vtclog *vl, unsigned lvl, const char *pfx, const char *str)
 		vsb_printf(vl->vsb, "%s %-4s %s(null)\n",
 		    lead[lvl], vl->id, pfx);
 	else
+		l = 0;
 		for(; *str != '\0'; str++) {
+			if (++l > 512) {
+				vsb_printf(vl->vsb, "..."); 
+				break;
+			}
 			if (nl) {
 				vsb_printf(vl->vsb, "%s %-4s %s| ",
 				    lead[lvl], vl->id, pfx);