include ctype.h

diff --git a/crypto/x509/x509_cmp.c b/crypto/x509/x509_cmp.c
index 1a7691d2a85f0e1a470c60250a9cf3950baa5504..792781009820efd68cd48f2562b31042003cb463 100644 (file)
--- a/crypto/x509/x509_cmp.c
+++ b/crypto/x509/x509_cmp.c
@@ -57,6 +57,7 @@
  */
 
 #include <stdio.h>
+#include <ctype.h>
 #include "cryptlib.h"
 #include <openssl/asn1.h>
 #include <openssl/objects.h>