From: David Bremner <david@tethera.net>
Date: Mon, 23 May 2022 23:38:58 +0000 (-0300)
Subject: lib: define macro NODISCARD
X-Git-Tag: 0.37_rc0~76
X-Git-Url: https://git.cworth.org/git?p=notmuch;a=commitdiff_plain;h=7d5a9bd3aeed339cb1f1415a9da8fc09c74ca485

lib: define macro NODISCARD

In either C++17 (or later) mode, or when running cppcheck, this can be
used to selectively generate warnings about discarded return values.
---

diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index c63cfe5e..1c2290b2 100644
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -750,6 +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