ext/openssl/ossl_pkey.c in openssl-2.0.6 vs ext/openssl/ossl_pkey.c in openssl-2.0.7

@@ -161,20 +161,21 @@
 	ossl_raise(ePKeyError, "Could not parse PKey");
 
     return ossl_pkey_new(pkey);
 }
 
-static void
-pkey_check_public_key(EVP_PKEY *pkey)
+void
+ossl_pkey_check_public_key(const EVP_PKEY *pkey)
 {
     void *ptr;
     const BIGNUM *n, *e, *pubkey;
 
     if (EVP_PKEY_missing_parameters(pkey))
 	ossl_raise(ePKeyError, "parameters missing");
 
-    ptr = EVP_PKEY_get0(pkey);
+    /* OpenSSL < 1.1.0 takes non-const pointer */
+    ptr = EVP_PKEY_get0((EVP_PKEY *)pkey);
     switch (EVP_PKEY_base_id(pkey)) {
       case EVP_PKEY_RSA:
 	RSA_get0_key(ptr, &n, &e, NULL);
 	if (n && e)
 	    return;
@@ -350,10 +351,10 @@
     const EVP_MD *md;
     EVP_MD_CTX *ctx;
     int siglen, result;
 
     GetPKey(self, pkey);
-    pkey_check_public_key(pkey);
+    ossl_pkey_check_public_key(pkey);
     md = GetDigestPtr(digest);
     StringValue(sig);
     siglen = RSTRING_LENINT(sig);
     StringValue(data);