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From: Jens Gustedt <Jens.Gustedt@inria.fr>
To: musl@lists.openwall.com
Subject: [musl] [C23 divers headers 10/17] C23: remove the contents of stdalign.h
Date: Wed, 31 May 2023 11:22:57 +0200	[thread overview]
Message-ID: <83b3220596a37f3580f24cd531881f8423f8ba17.1685522953.git.Jens.Gustedt@inria.fr> (raw)
In-Reply-To: <cover.1685522953.git.Jens.Gustedt@inria.fr>

This now has no contents because the features have been promoted to
keywords.
---
 include/stdalign.h | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/include/stdalign.h b/include/stdalign.h
index 2cc94be3..0f4f28ac 100644
--- a/include/stdalign.h
+++ b/include/stdalign.h
@@ -1,20 +1,25 @@
-#ifndef _STDALIGN_H
-#define _STDALIGN_H
+#ifndef __STDC_VERSION_STDALIGN_H__
+#define __STDC_VERSION_STDALIGN_H__ 202311L
 
 #ifndef __cplusplus
 
 /* this whole header only works in C11 or with compiler extensions */
 #if __STDC_VERSION__ < 201112L && defined( __GNUC__)
-#define _Alignas(t) __attribute__((__aligned__(t)))
-#define _Alignof(t) __alignof__(t)
+# define _Alignas(t) __attribute__((__aligned__(t)))
+# define _Alignof(t) __alignof__(t)
 #endif
 
+#if __STDC_VERSION__ < 202311L
 #define alignas _Alignas
 #define alignof _Alignof
-
 #endif
 
+/* Starting with C23 this header has no contents because these are keywords. */
+#if __STDC_VERSION__ < 202311L
 #define __alignas_is_defined 1
 #define __alignof_is_defined 1
+#endif
+
+#endif
 
 #endif
-- 
2.34.1


  parent reply	other threads:[~2023-05-31  9:24 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-31  9:22 [musl] [C23 divers headers 00/17] Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 01/17] C23: add the WIDTH macros for the standard integer types Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 02/17] C23: Add the *_WIDTH macros to stdint.h Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 03/17] C23: add call_once to stdlib.h Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 04/17] C23: add timegm, gmtime_r and localtime_r to time.h in C23 mode Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 05/17] C23: memccpy, strdup and strndup are now standard C Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 06/17] C23: adapt setjmp.h Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 07/17] C23: change the noreturn functions in stdlib.h Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 08/17] C23: change the noreturn function in threads.h Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 09/17] C23: update stdbool.h Jens Gustedt
2023-05-31 12:58   ` Joakim Sindholt
2023-05-31 13:53     ` Jₑₙₛ Gustedt
2023-05-31 14:13       ` Joakim Sindholt
2023-05-31 14:18         ` Rich Felker
2023-05-31 14:19         ` Jₑₙₛ Gustedt
2023-05-31  9:22 ` Jens Gustedt [this message]
2023-05-31  9:22 ` [musl] [C23 divers headers 11/17] C23: remove the static_assert macro Jens Gustedt
2023-05-31  9:22 ` [musl] [C23 divers headers 12/17] C23: change the assert macro to ... arguments Jens Gustedt
2023-05-31  9:23 ` [musl] [C23 divers headers 13/17] C23: add the __STDC_VERSION_ASSERT_H__ macro Jens Gustedt
2023-05-31  9:23 ` [musl] [C23 divers headers 14/17] C23: allow va_start to receive only one argument Jens Gustedt
2023-05-31  9:23 ` [musl] [C23 divers headers 15/17] C23: add the unreachable macro Jens Gustedt
2023-05-31  9:23 ` [musl] [C23 divers headers 16/17] C23: add the nullptr_t type Jens Gustedt
2023-05-31  9:23 ` [musl] [C23 divers headers 17/17] C23: add the __STDC_VERSION_STDDEF_H__ macro Jens Gustedt
  -- strict thread matches above, loose matches on Subject: below --
2023-05-24 12:54 [musl] [C23 divers headers 00/17] boring header update Jens Gustedt
2023-04-19 11:48 ` [musl] [C23 divers headers 10/17] C23: remove the contents of stdalign.h Jens Gustedt
2023-05-24 14:25   ` Rich Felker

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