From: Cyril Hrubis <chrubis@suse.cz>
To: David Howells <dhowells@redhat.com>
Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
libc-alpha@sourceware.org,
"linux-api@vger.kernel.org" <linux-api@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
David Laight <David.Laight@aculab.com>,
Zack Weinberg <zack@owlfolio.org>,
"ltp@lists.linux.it" <ltp@lists.linux.it>
Subject: Re: [PATCH] uapi: Make __{u,s}64 match {u,}int64_t in userspace
Date: Wed, 8 Dec 2021 16:33:47 +0100 [thread overview]
Message-ID: <YbDQW6uakG3XD8jV@yuki> (raw)
In-Reply-To: <913509.1638457313@warthog.procyon.org.uk>
Hi!
> > I could be persuaded otherwise with an example of a program for which
> > changing __s64 from 'long long' to 'long' would break *binary* backward
> > compatibility, or similarly for __u64.
>
> C++ could break.
Thinking of this again we can detect C++ as well so it can be safely
enabled just for C with:
#if !defined(__KERNEL__) && !defined(__cplusplus) && __BITSPERLONG == 64
# include <asm-generic/int-l64.h>
#else
# include <asm-generic/int-ll64.h>
#endif
--
Cyril Hrubis
chrubis@suse.cz
next prev parent reply other threads:[~2021-12-08 15:32 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-22 16:43 [PATCH] uapi: Make __{u,s}64 match {u,}int64_t in userspace Cyril Hrubis
2021-11-22 16:51 ` Alejandro Colomar (mailing lists) via Libc-alpha
2021-11-22 20:48 ` Arnd Bergmann
2021-11-23 9:14 ` Cyril Hrubis
2021-11-23 14:18 ` Arnd Bergmann
2021-11-23 19:50 ` Florian Weimer via Libc-alpha
2021-11-24 10:17 ` Alejandro Colomar (man-pages) via Libc-alpha
2021-11-22 22:19 ` Zack Weinberg via Libc-alpha
2021-11-23 9:15 ` Cyril Hrubis
2021-12-02 15:34 ` Rich Felker
2021-12-02 23:29 ` Rich Felker
2021-12-02 23:43 ` Adhemerval Zanella via Libc-alpha
2021-12-03 0:10 ` Zack Weinberg via Libc-alpha
2021-12-03 12:32 ` Adhemerval Zanella via Libc-alpha
2021-12-03 12:54 ` Alejandro Colomar (man-pages) via Libc-alpha
2021-11-23 16:47 ` David Howells via Libc-alpha
2021-11-23 16:58 ` David Laight via Libc-alpha
2021-11-29 11:58 ` Cyril Hrubis
2021-11-29 14:34 ` Arnd Bergmann
2021-12-02 14:55 ` Zack Weinberg via Libc-alpha
2021-12-02 15:01 ` David Howells via Libc-alpha
2021-12-02 20:48 ` Zack Weinberg via Libc-alpha
2021-12-08 15:33 ` Cyril Hrubis [this message]
2022-06-17 12:13 ` Ping: " Alejandro Colomar via Libc-alpha
2022-06-17 15:04 ` Ping: [PATCH] uapi: Make __{u, s}64 match {u, }int64_t " Cyril Hrubis
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