address off by one error in idn_output_filter

diff --git a/bin/dig/dighost.c b/bin/dig/dighost.c
index 33841914714b0f3ac1027d94dea1136323d88a1a..85e725c030ac0df0b8c6e842ddfbcb1d61944dd8 100644 (file)
--- a/bin/dig/dighost.c
+++ b/bin/dig/dighost.c
@@ -4420,7 +4420,7 @@ idn_output_filter(isc_buffer_t *buffer, unsigned int used_org) {
         * Copy name from 'buffer' to 'src' and terminate it with NULL.
         */
        srclen = isc_buffer_usedlength(buffer) - used_org;
-       if (srclen > sizeof(src)) {
+       if (srclen >= sizeof(src)) {
                warn("Input name too long to perform IDN conversion");
                return (ISC_R_SUCCESS);
        }