blob: d2b7743d785fe9bded0b952fbb9d445230405640 (
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diff --git a/lib/mbedtls/library/ssl_tls13_keys.c b/lib/mbedtls/library/ssl_tls13_keys.c
index dbc703a6c124961cfe38973ed4a0cae4867ba870..51afb044ccf3892bd0d69ec06b1f0ab0d15c287d 100644
--- a/lib/mbedtls/library/ssl_tls13_keys.c
+++ b/lib/mbedtls/library/ssl_tls13_keys.c
@@ -80,7 +80,8 @@ struct mbedtls_ssl_tls13_labels_struct const mbedtls_ssl_tls13_labels =
* the HkdfLabel structure on success.
*/
-static const char tls13_label_prefix[6] = "tls13 ";
+/* We need to tell the compiler that we meant to leave out the null character. */
+static const char tls13_label_prefix[6] __attribute__ ((nonstring)) = "tls13 ";
#define SSL_TLS1_3_KEY_SCHEDULE_HKDF_LABEL_LEN(label_len, context_len) \
(2 /* expansion length */ \
diff --git a/lib/mbedtls/library/ssl_tls13_keys.h b/lib/mbedtls/library/ssl_tls13_keys.h
index 14f6e4876c64b7562eef7de589f92c1fd84b190a..f6d02b522a5e3f4a6f6802ae7655dee07218f8d1 100644
--- a/lib/mbedtls/library/ssl_tls13_keys.h
+++ b/lib/mbedtls/library/ssl_tls13_keys.h
@@ -40,8 +40,9 @@
#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+/* We need to tell the compiler that we meant to leave out the null character. */
#define MBEDTLS_SSL_TLS1_3_LABEL(name, string) \
- const unsigned char name [sizeof(string) - 1];
+ const unsigned char name [sizeof(string) - 1] __attribute__ ((nonstring));
union mbedtls_ssl_tls13_labels_union {
MBEDTLS_SSL_TLS1_3_LABEL_LIST
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