On 02/04/2014 06:12 PM, Jan Kiszka wrote:
On 2014-02-04 17:36, Philippe Gerum wrote:
On 02/04/2014 04:18 PM, git repository hosting wrote:
Module: xenomai-jki
Branch: for-forge
Commit: bffcc58ed0114985a4d8d8a4cff2adff1b13292d
URL:
http://git.xenomai.org/?p=xenomai-jki.git;a=commit;h=bffcc58ed0114985a4d8d8a4cff2adff1b13292d
Author: Jan Kiszka <jan.kis...@siemens.com>
Date: Tue Feb 4 16:12:07 2014 +0100
alchemy: Replace static variable no_alchemy_task with macro
The current definition of a static const variable representing an
invalid alchemy task is both C++-incompatible and also ugly as we do not
use them in every module that includes task.h. So replace it with a
macro that builds the required struct on-the-fly.
Could you elaborate on the ugly part of things? I don't really get your
point.
It is ugly to define potentially unused static variables in a header,
even more when this header is part of the public interface, pulled in by
our users with hard to predict compiler configurations. But more
important is the conflict with C++ (including C++11).
Are you sure you are using a C++ compiler recent enough?
Using g++ 4.7, I do not get any warning compiling the following code:
#include <stdio.h>
#include <stdlib.h>
struct x {
unsigned a;
unsigned b;
} y = {
.a = 42,
.b = 43,
};
int main(void)
{
printf("%u\n", y.a);
}
Without even passing a -std option.
--
Gilles.
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