linux-kernel - Re: [PATCH v1 1/1] vt: Move custom isspace() to its own namespace

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Date:   Thu, 13 May 2021 09:43:15 +0200
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v1 1/1] vt: Move custom isspace() to its own namespace

On 10. 05. 21, 16:49, Andy Shevchenko wrote:
> If by some reason any of the headers will include ctype.h
> we will have a name collision. Avoid this by moving isspace()
> to the dedicate namespace.
> 
> First appearance of the code is in the commit 24a1c2a769cf
> ("Import 1.1.92").
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Reviewed-by: Jiri Slaby <jirislaby@...nel.org>

> ---
>   drivers/tty/vt/selection.c | 18 +++++++++---------
>   1 file changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/tty/vt/selection.c b/drivers/tty/vt/selection.c
> index f245a5acf7e9..bcb6bc5731cc 100644
> --- a/drivers/tty/vt/selection.c
> +++ b/drivers/tty/vt/selection.c
> @@ -33,7 +33,7 @@
>   #include <linux/sched/signal.h>
>   
>   /* Don't take this from <ctype.h>: 011-015 on the screen aren't spaces */
> -#define isspace(c)	((c) == ' ')
> +#define is_space_on_vt(c)	((c) == ' ')
>   
>   /* FIXME: all this needs locking */
>   static struct vc_selection {
> @@ -209,7 +209,7 @@ static int vc_selection_store_chars(struct vc_data *vc, bool unicode)
>   			bp += store_utf8(c, bp);
>   		else
>   			*bp++ = c;
> -		if (!isspace(c))
> +		if (!is_space_on_vt(c))
>   			obp = bp;
>   		if (!((i + 2) % vc->vc_size_row)) {
>   			/* strip trailing blanks from line and add newline,
> @@ -238,9 +238,9 @@ static int vc_do_selection(struct vc_data *vc, unsigned short mode, int ps,
>   		new_sel_end = pe;
>   		break;
>   	case TIOCL_SELWORD:	/* word-by-word selection */
> -		spc = isspace(sel_pos(ps, unicode));
> +		spc = is_space_on_vt(sel_pos(ps, unicode));
>   		for (new_sel_start = ps; ; ps -= 2) {
> -			if ((spc && !isspace(sel_pos(ps, unicode))) ||
> +			if ((spc && !is_space_on_vt(sel_pos(ps, unicode))) ||
>   			    (!spc && !inword(sel_pos(ps, unicode))))
>   				break;
>   			new_sel_start = ps;
> @@ -248,9 +248,9 @@ static int vc_do_selection(struct vc_data *vc, unsigned short mode, int ps,
>   				break;
>   		}
>   
> -		spc = isspace(sel_pos(pe, unicode));
> +		spc = is_space_on_vt(sel_pos(pe, unicode));
>   		for (new_sel_end = pe; ; pe += 2) {
> -			if ((spc && !isspace(sel_pos(pe, unicode))) ||
> +			if ((spc && !is_space_on_vt(sel_pos(pe, unicode))) ||
>   			    (!spc && !inword(sel_pos(pe, unicode))))
>   				break;
>   			new_sel_end = pe;
> @@ -276,12 +276,12 @@ static int vc_do_selection(struct vc_data *vc, unsigned short mode, int ps,
>   	/* select to end of line if on trailing space */
>   	if (new_sel_end > new_sel_start &&
>   		!atedge(new_sel_end, vc->vc_size_row) &&
> -		isspace(sel_pos(new_sel_end, unicode))) {
> +		is_space_on_vt(sel_pos(new_sel_end, unicode))) {
>   		for (pe = new_sel_end + 2; ; pe += 2)
> -			if (!isspace(sel_pos(pe, unicode)) ||
> +			if (!is_space_on_vt(sel_pos(pe, unicode)) ||
>   			    atedge(pe, vc->vc_size_row))
>   				break;
> -		if (isspace(sel_pos(pe, unicode)))
> +		if (is_space_on_vt(sel_pos(pe, unicode)))
>   			new_sel_end = pe;
>   	}
>   	if (vc_sel.start == -1)	/* no current selection */
> 


-- 
js
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