Re: [Qemu-devel] [PATCH 1/2] Introduce compiler.h header file

[malc <av1474@comtv.ru>]

On Wed, 13 Jul 2011, Luiz Capitulino wrote:

> On Wed, 13 Jul 2011 18:37:31 +0400 (MSD)
> malc <av1474@comtv.ru> wrote:
> 
> > On Wed, 13 Jul 2011, Luiz Capitulino wrote:
> > 
> > > From: Luiz Capitulino <lcapitulino@gmail.com>
> > > 
> > > This moves compiler related macros from qemu-common.h to compiler.h.
> > > 
> > > The reason for this change is that there are simple header files that
> > > depend only on the compiler macros, so including qemu-common.h is overkill.
> > > 
> > > Besides, qemu-common.h is bloated and will benefit from some splitting.
> > > 
> > > Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>
> > > ---
> > >  compiler.h    |   31 +++++++++++++++++++++++++++++++
> > >  qemu-common.h |   25 +------------------------
> > >  2 files changed, 32 insertions(+), 24 deletions(-)
> > >  create mode 100644 compiler.h
> > > 
> > > diff --git a/compiler.h b/compiler.h
> > > new file mode 100644
> > > index 0000000..2dfc2c6
> > > --- /dev/null
> > > +++ b/compiler.h
> > > @@ -0,0 +1,31 @@
> > > +#ifndef COMPILER_H
> > > +#define COMPILER_H
> > > +
> > > +#include "config-host.h"
> > > +
> > > +#define QEMU_NORETURN __attribute__ ((__noreturn__))
> > > +#ifdef CONFIG_GCC_ATTRIBUTE_WARN_UNUSED_RESULT
> > > +#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
> > > +#else
> > > +#define QEMU_WARN_UNUSED_RESULT
> > > +#endif
> > > +
> > > +#define QEMU_BUILD_BUG_ON(x) typedef char __build_bug_on__##__LINE__[(x)?-1:1];
> > 
> > Identifiers starting with double underscore are reserved for all uses,
> > so, please, use something else.
> 
> I'll fix it as an additional patch:

OK.

> 
> diff --git a/compiler.h b/compiler.h
> index 2dfc2c6..54720bf 100644
> --- a/compiler.h
> +++ b/compiler.h
> @@ -10,7 +10,8 @@
>  #define QEMU_WARN_UNUSED_RESULT
>  #endif
>  
> -#define QEMU_BUILD_BUG_ON(x) typedef char __build_bug_on__##__LINE__[(x)?-1:1];
> +#define QEMU_BUILD_BUG_ON(x) \
> +    typedef char qemu_build_bug_on__##__LINE__[(x)?-1:1];
>  
>  #if defined __GNUC__
>  # if (__GNUC__ < 4) || \
> 

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