lib: define macro NODISCARD

[notmuch] / lib / notmuch-private.h

diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index 3cc79bc4c86148445aaaf7f831421abdbb45801d..1c2290b24847d8a55f957e2049c8cf3da64f78f8 100644 (file)
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -586,9 +586,6 @@ _notmuch_message_add_reply (notmuch_message_t *message,
 void
 _notmuch_message_remove_unprefixed_terms (notmuch_message_t *message);
 
-const char *
-_notmuch_message_get_thread_id_only (notmuch_message_t *message);
-
 size_t _notmuch_message_get_thread_depth (notmuch_message_t *message);
 
 void
@@ -753,6 +750,12 @@ _notmuch_talloc_steal (const void *new_ctx, const T *ptr)
 #undef talloc_steal
 #define talloc_steal _notmuch_talloc_steal
 #endif
+
+#if __cplusplus >= 201703L || __cppcheck__
+#define NODISCARD [[nodiscard]]
+#else
+#define NODISCARD /**/
+#endif
 #endif
 
 #endif