Re: [PATCH v2 09/13] audio: remove GNUC & MSVC check

[Peter Maydell <peter.maydell@linaro.org>]

On Thu, 26 Nov 2020 at 11:30, <marcandre.lureau@redhat.com> wrote:
>
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> QEMU requires either GCC or Clang, which both advertize __GNUC__.
> Drop MSVC fallback path.
>
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  audio/audio.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
>
> diff --git a/audio/audio.c b/audio/audio.c
> index 46578e4a58..d7a00294de 100644
> --- a/audio/audio.c
> +++ b/audio/audio.c
> @@ -122,13 +122,7 @@ int audio_bug (const char *funcname, int cond)
>
>  #if defined AUDIO_BREAKPOINT_ON_BUG
>  #  if defined HOST_I386
> -#    if defined __GNUC__
> -        __asm__ ("int3");
> -#    elif defined _MSC_VER
> -        _asm _emit 0xcc;
> -#    else
> -        abort ();
> -#    endif
> +      __asm__ ("int3");
>  #  else
>          abort ();
>  #  endif
> --
> 2.29.0

I would prefer to just drop this attempt to emit an inline
breakpoint insn (which won't work on non-x86 hosts and seems
to me to have no benefit over just calling abort(), which will
also drop you into the debugger) and simply make it abort() if
AUDIO_BREAKPOINT_ON_BUG is defined. Gerd, do you have an
opinion ?

thanks
-- PMM