From 22245cb2942531adf8010654757dcbde43c8064b Mon Sep 17 00:00:00 2001 From: David Horstmann Date: Fri, 13 Mar 2026 15:15:09 +0000 Subject: [PATCH] Add unused fields to SSL structs These fields reserve a small space for us to repurpose in the lifetime of the 4.1 LTS release without breaking the ABI, if needed. Signed-off-by: David Horstmann --- include/mbedtls/ssl.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h index 8f58b3e9c0..c4cbaaf4e0 100644 --- a/include/mbedtls/ssl.h +++ b/include/mbedtls/ssl.h @@ -1239,6 +1239,12 @@ struct mbedtls_ssl_session { #if defined(MBEDTLS_SSL_PROTO_TLS1_3) mbedtls_ssl_tls13_application_secrets MBEDTLS_PRIVATE(app_secrets); #endif + + /* Unused field reserved for future use */ + union { + size_t number; + void *ptr; + } MBEDTLS_PRIVATE(unused); }; /* @@ -1565,6 +1571,12 @@ struct mbedtls_ssl_config { #if defined(MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED) const mbedtls_x509_crt *MBEDTLS_PRIVATE(dn_hints);/*!< acceptable client cert issuers */ #endif + + /* Unused field reserved for future use */ + union { + size_t number; + void *ptr; + } MBEDTLS_PRIVATE(unused); }; struct mbedtls_ssl_context { @@ -1848,6 +1860,12 @@ struct mbedtls_ssl_context { * does not currently restore the user data. */ mbedtls_ssl_user_data_t MBEDTLS_PRIVATE(user_data); + + /* Unused field reserved for future use */ + union { + size_t number; + void *ptr; + } MBEDTLS_PRIVATE(unused); }; /**