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From: Andreas Arnez <arnez@linux.vnet.ibm.com>
To: Pedro Alves <palves@redhat.com>
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH 1/4] tui-disasm: Fix window content buffer overrun
Date: Wed, 09 Nov 2016 12:07:00 -0000	[thread overview]
Message-ID: <m3fun0x3f9.fsf@oc1027705133.ibm.com> (raw)
In-Reply-To: <763f0466-3261-faca-fcc1-da6772c952c8@redhat.com> (Pedro Alves's	message of "Tue, 8 Nov 2016 19:28:50 +0000")

On Tue, Nov 08 2016, Pedro Alves wrote:

[...]

> Missing copyright header.

Added.

> Funny, I was just playing with throwing a large
> function name at the compiler last week, after seeing:
>
>   https://sourceware.org/ml/binutils/2016-11/msg00027.html

Wow, "mangled name of some 590K characters"... that's impressive.  The
TUI crash already occurs with much shorter names.  On the other hand,
IIRC, I had a version of my test with more than that (I think it was
over 1MB), and it worked.  So I'm not sure why I didn't hit the problem
above.

[...]

>> +	fail "compile"
>
> Shouldn't this be "untested" ?

Yeah, probably more appropriate.  Changed.

[...]

> This is OK.

Thanks.  I pushed the whole patch series with the changes above.

> This could probably all be greatly simplified with std::string
> and getting rid of the alloca...

Also note that the current implementation has a usability issue.  With
long mangled names, the instructions are no longer visible on the
screen, and a lot of scrolling may be required.  See also
https://sourceware.org/bugzilla/show_bug.cgi?id=15580

Of course, fixing that would be a different topic.

--
Andreas


  reply	other threads:[~2016-11-09 12:07 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-08 18:57 [PATCH 0/4] Some TUI fixes Andreas Arnez
2016-11-08 18:58 ` [PATCH 1/4] tui-disasm: Fix window content buffer overrun Andreas Arnez
2016-11-08 19:29   ` Pedro Alves
2016-11-09 12:07     ` Andreas Arnez [this message]
2016-11-08 18:59 ` [PATCH 3/4] tui-winsource: Allocate for actual lines only Andreas Arnez
2016-11-08 19:31   ` Pedro Alves
2016-11-08 18:59 ` [PATCH 2/4] tui-disasm: Fix line buffer size calculation Andreas Arnez
2016-11-08 19:30   ` Pedro Alves
2016-11-08 19:00 ` [PATCH 4/4] tui-winsource: Remove failed-allocation logic Andreas Arnez
2016-11-08 19:31   ` Pedro Alves

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