Re: [Xen-devel] [OSSTEST PATCH 01/25] Osstest.pm: Provide new db_prepare helper with built-in debugging

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Thu, 2015-06-18 at 16:33 +0100, Ian Jackson wrote:
> Ian Jackson writes ("[OSSTEST PATCH 01/25] Osstest.pm: Provide new db_prepare 
> helper with built-in debugging"):
> > No callers, so no functional change, as yet.
> 
> > +sub db_prepare ($) {
> > +    # caller must ensure global filehandle DEBUG is open
> > +    my ($stmt) = @_;
> > +    print ::DEBUG "DB PREPARING:\n$stmt\n";
> > +    return $dbh_tests->prepare($stmt);
> 
> This generates:
> 
> Name "main::DEBUG" used only once: possible typo at Osstest.pm line
> 274.
> 
> Here is a v2 of this patch which fixes it.
> 
> Ian.
> 
> commit bd7cf4f0f1a8c45d840528bc28dbd89b34732d7a
> Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> Date:   Fri May 29 13:19:39 2015 +0000
> 
>     Osstest.pm: Provide new db_prepare helper with built-in debugging
>     
>     No callers, so no functional change, as yet.
>     
>     Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
>     Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
>     ---
>     v2: Suppress "used only once" warning
> 
> diff --git a/Osstest.pm b/Osstest.pm
> index e8bd77b..8948666 100644
> --- a/Osstest.pm
> +++ b/Osstest.pm
> @@ -35,7 +35,7 @@ BEGIN {
>                        getmethod
>                        postfork
>                        $dbh_tests db_retry db_retry_retry db_retry_abort
> -                      db_begin_work
> +                      db_begin_work db_prepare
>                        ensuredir get_filecontents_core_quiet system_checked
>                        nonempty visible_undef show_abs_time
>                        );
> @@ -49,6 +49,10 @@ our $mjobdb;
>  
>  our $dbh_tests;
>  
> +scalar *main::DEBUG;
> +# declaration prevents `Name "main::DEBUG" used only once'
> +# scalar prevents `useless use of a variable in void context'

um, wow ;-)

I suppose you will push this?



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