https://git.ruby-lang.org/ruby.git/commit/?id=ee7131614c

From ee7131614c584db6e469865e19a5842e0e48680a Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@r...>
Date: Sat, 22 Feb 2020 05:52:01 +0900
Subject: [ruby/openssl] pkey/ec: use EC_GROUP_free() instead of
 EC_GROUP_clear_free()

EC_GROUP_clear_free() is deprecated in OpenSSL 3.0.

EC_GROUP does not include any sensitive data, so we can safely use
EC_GROUP_free() instead.

https://github.com/ruby/openssl/commit/e93a5fdffc
---
 ext/openssl/ossl_pkey_ec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/openssl/ossl_pkey_ec.c b/ext/openssl/ossl_pkey_ec.c
index b317e45d6d..db80d112a0 100644
--- a/ext/openssl/ossl_pkey_ec.c
+++ b/ext/openssl/ossl_pkey_ec.c
@@ -479,7 +479,7 @@ static VALUE ossl_ec_key_check_key(VALUE self) https://github.com/ruby/ruby/blob/trunk/ext/openssl/ossl_pkey_ec.c#L479
 static void
 ossl_ec_group_free(void *ptr)
 {
-    EC_GROUP_clear_free(ptr);
+    EC_GROUP_free(ptr);
 }
 
 static const rb_data_type_t ossl_ec_group_type = {
-- 
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