Avoid overflow during statistics dump

Related: !1493
Fixes: #4467
(cherry picked from commit 7b0115e33178711367d0375a884f85bb978aac14)

diff --git a/lib/isc/stats.c b/lib/isc/stats.c
index 3e4676c2aca710806e395a39026926559beff8c6..2e3fd3f47febfd1bf8276d012fcf0515e33047e1 100644 (file)
--- a/lib/isc/stats.c
+++ b/lib/isc/stats.c
@@ -125,7 +125,7 @@ isc_stats_dump(isc_stats_t *stats, isc_stats_dumper_t dump_fn, void *arg,
        REQUIRE(ISC_STATS_VALID(stats));
 
        for (i = 0; i < stats->ncounters; i++) {
-               uint32_t counter = atomic_load_acquire(&stats->counters[i]);
+               isc__atomic_statcounter_t counter = atomic_load_acquire(&stats->counters[i]);
                if ((options & ISC_STATSDUMP_VERBOSE) == 0 && counter == 0) {
                        continue;
                }