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From: Szabolcs Nagy <nsz@port70.net>
To: musl@lists.openwall.com
Subject: Re: time.h define NULL
Date: Tue, 2 Jun 2015 11:35:53 +0200	[thread overview]
Message-ID: <20150602093553.GA10927@port70.net> (raw)
In-Reply-To: <1433236180.2010.17.camel@xiaoka.com>

* Tomasz Sterna <tomek@xiaoka.com> [2015-06-02 11:09:40 +0200]:
> Why does time.h unconditionally define NULL [1]?

because it is required

> It gives me the following warning during compilation:
> 
> In file included from /usr/include/pthread.h:31:
> /usr/include/time.h:11:9: warning: 'NULL' macro redefined
> [-Wmacro-redefined]
> #define NULL 0L
>         ^

what is the previous definition?
and why is that conflicting?

c11 6.10.3p2:

#define A x
#define A x

is valid

#define A x
#define A y

is not.

> 
> [1] http://git.musl-libc.org/cgit/musl/tree/include/time.h#n11
> -- 
>  /o__ 
> (_<^' It's better to burn out than it is to rust.


  reply	other threads:[~2015-06-02  9:35 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-02  9:09 Tomasz Sterna
2015-06-02  9:35 ` Szabolcs Nagy [this message]
2015-06-02  9:38   ` Daniel Cegiełka
2015-06-02  9:41     ` Szabolcs Nagy
2015-06-02 11:16   ` Tomasz Sterna
2015-06-02 11:24     ` Szabolcs Nagy
2015-06-02 12:04       ` Tomasz Sterna
2015-06-02 15:57         ` stable 1.1.9 & current GIT broken on mips Sebastian Gottschall
2015-06-02 17:19           ` Rich Felker
2015-06-02 17:52             ` Sebastian Gottschall
2015-06-02 19:11               ` Rich Felker
2015-06-02 19:59                 ` Sebastian Gottschall
2015-06-04  4:04                   ` Rich Felker
2015-06-04  8:29                     ` Sebastian Gottschall
2015-06-04 12:14                     ` Sebastian Gottschall
2015-06-04 16:07                       ` Rich Felker
2015-06-06 15:42                         ` Anthony G. Basile
2015-06-06 15:59                           ` Anthony G. Basile
2015-06-02 11:32     ` time.h define NULL Jens Gustedt

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