--- tls/tls_keypair.c.orig	Sun Apr 19 02:12:25 2026
+++ tls/tls_keypair.c	Sun Apr 19 02:12:33 2026
@@ -15,6 +15,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include <limits.h>
+
 #include <openssl/bio.h>
 #include <openssl/err.h>
 #include <openssl/pem.h>