lkml.org 
[lkml]   [2014]   [Oct]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: Commit 258801563b breaks on old compilers
On Oct 31, 2014 10:58 AM, "Boris Ostrovsky" <boris.ostrovsky@oracle.com> wrote:
>
> Andy,
>
>
> Your commit 258801563b ("x86/vdso: Change the PER_CPU segment to use struct desc_struct") in -tip breaks old compilers that don't support initialization of anonymous structures (I think pre-4.6):

I bet it breaks clang, too. Tip people, can you add:

http://ozlabs.org/~akpm/mmots/broken-out/arch-x86-vdso-vmac-fix-build-with-older-gcc.patch

Thanks!

>
> FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap> cat anon.c
> struct bar {
> struct {
> int i;
> };
> };
>
> main()
> {
> struct bar a = {.i = 0};
> }
>
> FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap> gcc --version|head -1
> gcc (GCC) 4.4.4 20100503 (Red Hat 4.4.4-2)
> FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap> gcc anon.c
> anon.c: In function ‘main’:
> anon.c:9: error: unknown field ‘i’ specified in initializer
> FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap>
>
>
> but
>
> build@build-mk2 bootstrap]$ gcc --version|head -1
> gcc (GCC) 4.6.3 20120306 (Red Hat 4.6.3-2)
> [build@build-mk2 bootstrap]$ gcc anon.c
> [build@build-mk2 bootstrap]$
>
>
> -boris
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2014-10-31 19:41    [W:0.034 / U:1.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site