From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Juergen Borleis <jbe@pengutronix.de>
Cc: "Ulrich Ölmann" <u.oelmann@pengutronix.de>,
"Pengutronix Public Open-Source-Development"
<oss-tools@pengutronix.de>,
entwicklung@pengutronix.de
Subject: Re: [OSS-Tools] [PATCH dt-utils 11/12] state: fix formatting of "off_t" variables
Date: Mon, 4 Feb 2019 10:06:31 +0100 [thread overview]
Message-ID: <20190204090631.dhrkz76qmbd5m6io@pengutronix.de> (raw)
In-Reply-To: <201902040854.30592.jbe@pengutronix.de>
On Mon, Feb 04, 2019 at 08:54:29AM +0100, Juergen Borleis wrote:
> On Sunday 03 February 2019 22:48:06 Ulrich Ölmann wrote:
> > Explicitely casting an "off_t" variable to "long long" and formatting it
> > via "%lld" or "%llx" respectively makes 32- as well as 64-bit compilers
> > happy (tested with gcc-8.2.1 and clang-7.0.1).
>
> Könnte hier der Cast (intmax_t) und der Prefix 'j' vielleicht besser sein?
>
> off_t blub;
>
> printf("Blub is: %jd\n", (intmax_t)blub);
Note: the j length modifier exists only since glibc 2.1. Don't know
about non-Linux (or alternative Linux) libc implementations. (Do we care
about those?). Just checked the OpenSolaris state, printf there knows
about 'j', but notes:
If the j length modifier is used, 32-bit applications that
were compiled using c89 on releases prior to Solaris 10 will
experience undefined behavior
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2019-02-04 9:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-03 21:47 [OSS-Tools] [PATCH dt-utils 00/12] Diverse patches mainly removing bugs and warnings Ulrich Ölmann
2019-02-03 21:47 ` [OSS-Tools] [PATCH dt-utils 01/12] common: align declarations of dev_add_param_*() functions with barebox Ulrich Ölmann
2019-02-03 21:47 ` [OSS-Tools] [PATCH dt-utils 02/12] of_get_devicepath: again correct comment Ulrich Ölmann
2019-02-03 21:47 ` [OSS-Tools] [PATCH dt-utils 03/12] barebox-state: fix usage of multiple state instances Ulrich Ölmann
2019-02-03 21:47 ` [OSS-Tools] [PATCH dt-utils 04/12] barebox-state: complete cmdline options Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 05/12] barebox-state: add cmdline option "--version" Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 06/12] barebox-state: remove declaration of __state_uint8_get() Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 07/12] barebox-state: remove unused variables Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 08/12] keystore-blob: remove unused variable Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 09/12] base64: " Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 10/12] base64: remove duplicate ‘const’ declaration specifier Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 11/12] state: fix formatting of "off_t" variables Ulrich Ölmann
2019-02-04 7:54 ` Juergen Borleis
2019-02-04 9:06 ` Uwe Kleine-König [this message]
2019-02-06 6:25 ` Ulrich Ölmann
2019-02-03 21:48 ` [OSS-Tools] [PATCH dt-utils 12/12] state: fix formatting of "uint32_t" variables Ulrich Ölmann
2019-02-07 11:43 ` [OSS-Tools] [PATCH dt-utils 00/12] Diverse patches mainly removing bugs and warnings Roland Hieber
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