From 54dd37bf077c4b5efbd0444ed0acb0691c5f2dbc Mon Sep 17 00:00:00 2001
From: Alex Gaynor <alex.gaynor@gmail.com>
Date: Sun, 19 Apr 2026 16:29:04 -0400
Subject: [PATCH] Make OpenSSL ASN.1 string types opaque for OpenSSL 4 compat

---
 src/_cffi_src/openssl/asn1.py | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/src/_cffi_src/openssl/asn1.py b/src/_cffi_src/openssl/asn1.py
index 39e8fef82064..f9cba775d855 100644
--- a/src/_cffi_src/openssl/asn1.py
+++ b/src/_cffi_src/openssl/asn1.py
@@ -13,18 +13,11 @@
 
 typedef ... ASN1_INTEGER;
 
-struct asn1_string_st {
-    int length;
-    int type;
-    unsigned char *data;
-    long flags;
-};
-
-typedef struct asn1_string_st ASN1_OCTET_STRING;
-typedef struct asn1_string_st ASN1_IA5STRING;
-typedef struct asn1_string_st ASN1_TIME;
+typedef ... ASN1_OCTET_STRING;
+typedef ... ASN1_IA5STRING;
+typedef ... ASN1_TIME;
 typedef ... ASN1_OBJECT;
-typedef struct asn1_string_st ASN1_STRING;
+typedef ... ASN1_STRING;
 typedef ... ASN1_GENERALIZEDTIME;
 typedef ... ASN1_ENUMERATED;