Re: refine of the GSOC project

[Charles Cui <charles.cui1984%gmail.com@localhost>]

let's call this small program as test.c.
There is no problem when executing  the command  gcc test.c,
However, when executing as   gcc test.c -D_POSIX_C_SOURCE=200112L, it
reports SA_ONSTACK is not declared.
_POSIX_C_SOURCE is enabled by default in the benchmark suite.
If you guys think this flag is not necessary for us, then problem is solved.

2016-05-13 6:43 GMT-07:00 Christos Zoulas <christos%zoulas.com@localhost>:

> On May 12,  9:50pm, charles.cui1984%gmail.com@localhost (Charles Cui) wrote:
> -- Subject: Re: refine of the GSOC project
>
> | Well, your saying of _NETBSD_SOURCE is defined by default seems correct,
> | I compiled a file in the benchmark separately which has the problem of
> | accessing
> | macro SA_ONSTACK
> | <http://nxr.netbsd.org/source/s?refs=SA_ONSTACK&project=src>  which
> lives
> | in <signal.h>. There is no problem in executing.
> | However, I am still not convinced why _NETBSD_SOURCE does not take effect
> | in the benchmark execution? There is no #undef _NETBSD_SOURCE in the
> | benchmark,
> | also defining other macros will not affect _NETBSD_SOURCE (it will make
> | multiple macros
> | exist simultaneously). I am not quite clear why the default
> _NETBSD_SOURCE
> | does not
> | work in the benchmark.
> |
> | this is from <signal.h>, benchmark using SA_ONSTACK reporting this macro
> | not found.
> |
>
> Why do you say that? Just compile and run this:
>
> #include <signal.h>
> #include <stdio.h>
>
> int
> main(void)
> {
>         printf("%#x\n", SA_ONSTACK);
>         return 0;
> }
>
> christos
>