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Date:      Sat, 07 Jul 2018 14:08:44 -0700
From:      Cy Schubert <Cy.Schubert@cschubert.com>
To:        =?utf-8?B?5b6M6Jek5aSn5Zyw?= <daichigoto@icloud.com>
Cc:        Hiroki Sato <hrs@FreeBSD.org>, daichi@FreeBSD.org, Eitan Adler <eadler@FreeBSD.org>, gnn@FreeBSD.org, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r336028 - head/usr.bin/top
Message-ID:  <201807072108.w67L8irC051381@slippy.cwsent.com>
In-Reply-To: Message from =?utf-8?B?5b6M6Jek5aSn5Zyw?= <daichigoto@icloud.com> of "Sat, 07 Jul 2018 20:39:33 %2B0900." <EA13C9AB-808A-4FDA-B68F-57E832AF6449@icloud.com>

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In message <EA13C9AB-808A-4FDA-B68F-57E832AF6449@icloud.com>, 
=?utf-8?B?5b6M6Je
k5aSn5Zyw?= writes:
> 
> > 2018/07/07 8:53、Hiroki Sato <hrs@FreeBSD.org>のメール:
> > 
> > Daichi GOTO <daichi@FreeBSD.org> wrote
> >  in <201807061207.w66C76CR043533@repo.freebsd.org>:
> > 
> > da> Author: daichi
> > da> Date: Fri Jul  6 12:07:06 2018
> > da> New Revision: 336028
> > da> URL: https://svnweb.freebsd.org/changeset/base/336028
> > da>
> > da> Log:
> > da>   Changed to eliminate the upper limit of command length displayed
> > da>   by "-a" and expand to match terminal width
> > da>
> > da>   Reviewed by:	eadler
> > da>   Approved by:	gnn (mentor)
> > da>   Differential Revision:	https://reviews.freebsd.org/D16083
> > da>
> > da> Modified:
> > da>   head/usr.bin/top/display.c
> > da>   head/usr.bin/top/machine.c
> > da>   head/usr.bin/top/screen.c
> > da>   head/usr.bin/top/top.h
> > 
> > This change breaks displaying a prompt and messages in the
> > interactive mode by new_message() when typing "o" or "p", for
> > example.  While r336031 fixed a warning in GCC, it does not fix the
> > problem itself.  Please fix it.
>
> OK. I will fix this problem first.

This should circumvent the problem until you find a more permanent fix.

Index: /opt/src/svn-current/usr.bin/top/display.c
===================================================================
--- /opt/src/svn-current/usr.bin/top/display.c	(revision 336075)
+++ /opt/src/svn-current/usr.bin/top/display.c	(working copy)
@@ -960,7 +960,7 @@
     va_start(args, msgfmt);
 
     /* first, format the message */
-    vsnprintf(next_msg, strlen(next_msg), msgfmt, args);
+    vsnprintf(next_msg, screen_width + 5, msgfmt, args);
 
     va_end(args);
 

>
>
> > I also think restructure of the buffer management is required first
> > if we want to eliminate the column width limitation.  Using sbuf(9)
> > consistently may be better than incomplete conversion from static
> > arrays to malloc().
>
> I understand. Switching to sbuf(9) is the next step.
>
> > 
> > -- Hiroki
>
>
>


-- 
Cheers,
Cy Schubert <Cy.Schubert@cschubert.com>
FreeBSD UNIX:  <cy@FreeBSD.org>   Web:  http://www.FreeBSD.org

	The need of the many outweighs the greed of the few.





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