On Wed, Dec 05, 2018 at 02:40:09PM +0800, Qu Wenruo wrote:
> messages.h:49:24: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
> PRINT_TRACE_ON_ERROR; \
>
> Just extra braces would solve the problem.
>
> Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
> Reviewed-by: Nikolay Borisov <nborisov@xxxxxxxx>
> ---
> messages.h | 15 ++++++++++-----
> 1 file changed, 10 insertions(+), 5 deletions(-)
>
> diff --git a/messages.h b/messages.h
> index ec7d93381a36..16f650d19a4b 100644
> --- a/messages.h
> +++ b/messages.h
> @@ -45,13 +45,16 @@
>
> #define error_on(cond, fmt, ...) \
> do { \
> - if ((cond)) \
> + if ((cond)) { \
> PRINT_TRACE_ON_ERROR; \
I think the definition of PRINT_TRACE_ON_ERROR should be fixed to always
emit a statement, a "do { } while (0)" in the other case. Otherwise it's
"don't forget to enclose in { } if used", the proposed change looks
lightly safer to me. I'll update the patch, no need to resend, please
let me know if it's ok for you.
