mbedtls_ssl_conf_alpn_protocols: declare list elements as const
This reflects the fact that the library will not modify the list, and allows
the list to be read from a const buffer.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 9386801..b7b075c 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -158,7 +158,7 @@
/* Check that the server chosen protocol was in our list and save it */
MBEDTLS_SSL_CHK_BUF_READ_PTR(p, protocol_name_list_end, protocol_name_len);
- for (const char **alpn = ssl->conf->alpn_list; *alpn != NULL; alpn++) {
+ for (const char *const *alpn = ssl->conf->alpn_list; *alpn != NULL; alpn++) {
if (protocol_name_len == strlen(*alpn) &&
memcmp(p, *alpn, protocol_name_len) == 0) {
ssl->alpn_chosen = *alpn;