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Re: [Qemu-trivial] [Qemu-devel] [PATCH] disas/i386.c: Add explicit brace


From: Blue Swirl
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH] disas/i386.c: Add explicit braces round empty for-loop body
Date: Sat, 23 Feb 2013 16:49:38 +0000

Thanks, applied.

On Sat, Feb 2, 2013 at 5:17 PM, Peter Maydell <address@hidden> wrote:
> Add explicit braces round an empty for-loop body; this fits
> QEMU style and is easier to read than an inconspicuous semicolon
> at the end of the line. It also silences a clang warning:
>
> disas/i386.c:4723:49: warning: for loop has empty body [-Wempty-body]
>           for (i = 0; tmp[i] == '0' && tmp[i + 1]; i++);
>                                                        ^
> disas/i386.c:4723:49: note: put the semicolon on a separate line to silence 
> this warning [-Wempty-body]
>
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> This is the only clang warning on MacOSX apart from the ones about
> deprecated features in audio/coreaudio.c and ui/cocoa.m, which is why
> I think it's worth zapping despite it being a style issue in one of the
> bits of disassembler code we got from binutils and which aren't generally
> in QEMU style.
>
> checkpatch complains about the non-multiple-of-4 indent:
> WARNING: suspect code indent for conditional statements (10, 10)
> #27: FILE: disas/i386.c:4723:
> +          for (i = 0; tmp[i] == '0' && tmp[i + 1]; i++) {
> +          }
>
> but I didn't see any value in reindenting the whole function just to
> shut it up.
>
> At some point in the 1.5 cycle maybe we could update the code to avoid
> the deprecated MacOS functions and then we could enable warnings-are-errors
> on MacOS too.
>
>  disas/i386.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/disas/i386.c b/disas/i386.c
> index 3b006b1..dbecf1f 100644
> --- a/disas/i386.c
> +++ b/disas/i386.c
> @@ -4720,7 +4720,8 @@ print_operand_value (char *buf, size_t bufsize, int 
> hex, bfd_vma disp)
>           buf[0] = '0';
>           buf[1] = 'x';
>            snprintf_vma (tmp, sizeof(tmp), disp);
> -         for (i = 0; tmp[i] == '0' && tmp[i + 1]; i++);
> +          for (i = 0; tmp[i] == '0' && tmp[i + 1]; i++) {
> +          }
>            pstrcpy (buf + 2, bufsize - 2, tmp + i);
>         }
>        else
> --
> 1.7.11.4
>
>



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