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Groups > comp.lang.c > #90172

Re: double free

From David Brown <david.brown@hesbynett.no>
Newsgroups comp.lang.c
Subject Re: double free
Date 2016-07-10 11:53 +0200
Organization A noiseless patient Spider
Message-ID <nlt5v7$5me$1@dont-email.me> (permalink)
References (3 earlier) <48c43c3f-8e7e-0509-5b9d-04133e7bb537@verizon.net> <pan.2016.07.09.05.13.42.40000@nowhere.invalid> <d3c0b115-927f-af9a-2c65-7893df4cbba9@verizon.net> <nlrfm4$fgs$1@dont-email.me> <ln60semtpl.fsf@kst-u.example.com>

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On 09/07/16 22:39, Keith Thompson wrote:
> David Brown <david.brown@hesbynett.no> writes:
>> On 09/07/16 16:16, James R. Kuyper wrote:
>>> On 07/09/2016 01:13 AM, Nobody wrote:
>>>> On Wed, 06 Jul 2016 15:22:51 -0400, James R. Kuyper wrote:
>>>>
>>>>>> Casting is /less/ common in C++ than in C -- there's nothing to lament!
>>>>>> Unless you compile C code with a C++ compiler, which is generally a bad
>>>>>> idea.
>>>>>
>>>>> Casting (preferably by using static_cast<>) is required by C++ to convert
>>>>> a void* to a pointer to object type (C++ 2011 C.1.3, cross-referencing
>>>>> 4.10). Such conversions do not occur implicitly the way they do in C.
>>>>
>>>> OTOH, C++ code typically has fewer reasons to use void* in the first place.
>>>>
>>>
>>> True - but the case under discussion is one of those reasons. In pure
>>> C++ code, calls to malloc() should almost always be replaced by more
>>> type-safe approaches such as direct or indirect use of the 'new'
>>> operator. But in code meant to be usable in both C and C++, it's
>>> annoying that casting the value returned by malloc() is mandatory in
>>> C++, and a bad idea in C.
>>>
>>
>> Casting the return value from malloc is not "a bad idea".  It is no more
>> and no less than an extra repetition of types you are already using:
>>
>> 	int* array = (int*) malloc(10 * sizeof(int));
>>
>> Yes, you need to write the same type three times if you want to express
>> your allocation in this manner.  But so what?  The cast does no harm to
>> your code, and it is only really relevant if you need to change the type
>> in some revision of the code.  And if that is likely enough for the
>> extra cast to be a risk of bugs or of extra effort, then you are
>> probably going to have to change a lot more code anyway - and you are
>> better off writing:
>>
>> 	typedef int elemType;
>> 	...
>> 	elemType* array = (elemType*) malloc(10 * sizeof(elemType));
>>
>> Or you can put the malloc inside a function or macro so you don't have
>> to use the cast throughout the code.
>
> Your defense of the cast seems to be that it's only *slightly*
> inconvenient and error-prone.

/I/ don't find it inconvenient or error-prone at all - indeed I think it 
can help avoid errors.

But I think that for those that find it inconvenient or error-prone, it 
is at most only slightly so.

I am not really trying to convince anyone that they should add the cast 
- people can choose that for themselves.  I am trying to explain why /I/ 
don't think it is a bad idea, and why I use the cast.  I think it is 
wrong to state "casting the result of malloc is a bad idea in C" as 
though it were a clear rule.  I happily accept "many C programmers think 
that casting the result of malloc is a bad idea" - and there is 
certainly a fair argument that all else being equal, following common 
idioms is a good thing for your code.

>
> Why do the cast at all?  What advantage does using the cast have over
> simply *not* using the cast?  Why should I write
>      some_type *ptr = (some_type*)malloc(sizeof (some_type));
> rather than
>      some_type *ptr = malloc(sizeof *ptr);
> ?  The version with the cast, writing the type name three times,
> isn't terribly difficult, and I can certainly manage to do it
> correctly if I choose to.  But why should I when there's a simpler
> and more robust alternative?

It becomes relevant when there is a separation between the pointer 
declaration and the call to malloc.  We can simplify by using the 
"sizeof *ptr" in the argument, to remove one of the differences.

	ptr = malloc(sizeof *ptr);

vs.

	ptr = (some_type*) malloc(sizeof *ptr)


When the type of ptr changes, the first version will continue to compile 
and the second version will give an error - this is what you mean by 
"more robust", I think.  But if the type of ptr changes, then it is 
highly likely that a lot of the code in the function will change.  An 
error message here is a /good/ thing - it shows that you have not yet 
checked that this line of code is still correct despite the major change 
to the function.  In fact, in some cases when changing the type of "ptr" 
I would also change its name - precisely to force compiler errors as a 
way of confirming that I have checked all relevant code.  (I would then 
change the name back again, to avoid such changes swamping real code 
changes when comparing code versions.)


Obviously the importance or usefulness of this is going to depend a good 
deal on the code in question.


>
>> Casting the result of malloc is neither hard nor error-prone - it's just
>> one of these things that some C programmers think is important to avoid
>> because using the cast makes your code look like C++.  It is much like
>> some C++ that get upset when someone writes "void foo(void);", because
>> in C++ it "should" be written "void foo();".
>
> Not at all.  My reasons for not casting the result of malloc() have
> absolutely nothing to do with making my code "look like C++".  I avoid
> the cast because code without the cast is shorter, cleaner, and more
> robust than code with the case.
>
>> Sometimes writing your C code in a C++ compatible manner involves a
>> little extra effort, but it is rare (IME) that the result is "bad" C code.
>
> If I needed to write C code that can also be compiled as C++ then sure,
> I'd cast the result of malloc().  But that's rarely necessary or
> appropriate, given the excellent support C++ has for interfacing to pure
> C code.
>
> If there were some advantage to adding the cast, I'd add it.  There
> isn't, so I don't.
>

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double free G G <gdotone@gmail.com> - 2016-07-05 02:38 -0700
  Re: double free Ian Collins <ian-news@hotmail.com> - 2016-07-05 21:45 +1200
    Re: double free Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-05 07:08 -0400
    Re: double free G G <gdotone@gmail.com> - 2016-07-05 16:41 -0700
  Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-05 10:50 +0100
  Re: double free BartC <bc@freeuk.com> - 2016-07-05 11:06 +0100
    Re: double free BartC <bc@freeuk.com> - 2016-07-05 19:07 +0100
  Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-05 12:16 +0000
    Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-05 13:57 +0100
      Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-05 08:43 -0700
    Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-05 14:57 +0100
      Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-10 18:49 +0000
    Re: double free G G <gdotone@gmail.com> - 2016-07-05 17:03 -0700
      Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-05 17:25 -0700
    Re: double free Jorgen Grahn <grahn+nntp@snipabacken.se> - 2016-07-06 19:09 +0000
      Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-07-06 15:22 -0400
        Re: double free Nobody <nobody@nowhere.invalid> - 2016-07-09 06:13 +0100
          Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-07-09 10:16 -0400
            Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-09 08:58 -0700
              Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-09 13:28 -0700
              Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-11 10:41 +0000
            Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-09 20:27 +0200
              Re: double free "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-07-09 11:31 -0700
              Re: double free Gareth Owen <gwowen@gmail.com> - 2016-07-09 20:14 +0100
              Re: double free Jerry Stuckle <jstucklex@attglobal.net> - 2016-07-09 15:34 -0400
                Re: double free jameskuyper@verizon.net - 2016-07-09 14:02 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-09 14:10 -0700
                Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-07-09 17:14 -0400
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-09 14:24 -0700
                Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-07-09 17:31 -0400
                Re: double free Jerry Stuckle <jstucklex@attglobal.net> - 2016-07-09 20:50 -0400
              Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-07-09 15:50 -0400
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-10 11:32 +0200
                Re: double free James Kuyper <jameskuyper@verizon.net> - 2016-07-10 16:01 -0400
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-11 10:07 +0200
                Re: double free James Kuyper <jameskuyper@verizon.net> - 2016-07-11 08:15 -0400
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-11 06:53 -0700
                Re: double free Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-07-11 10:35 -0600
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-11 09:48 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 11:02 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 11:01 -0700
                Re: double free Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-07-11 13:03 -0600
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 10:57 -0700
                Re: double free albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-11-27 13:29 +0100
                Re: double free Melzzzzz <mel@zzzzz.com> - 2016-11-27 14:07 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-10 13:05 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-10 05:31 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-10 13:42 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-11 01:07 +0100
              Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-09 13:39 -0700
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-10 11:53 +0200
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-10 04:11 -0700
                Re: double free Jerry Stuckle <jstucklex@attglobal.net> - 2016-07-10 08:47 -0400
                Re: double free James Kuyper <jameskuyper@verizon.net> - 2016-07-10 16:05 -0400
              Re: double free Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-07-09 17:43 -0600
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-09 17:32 -0700
                Re: double free Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-07-09 20:34 -0600
              Re: double free Jorgen Grahn <grahn+nntp@snipabacken.se> - 2016-07-10 06:25 +0000
                Re: double free supercat@casperkitty.com - 2016-07-11 08:02 -0700
              Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-11 11:01 +0000
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-11 04:07 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 12:17 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-11 04:59 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 13:07 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 13:38 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 14:11 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 18:54 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 11:09 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 19:47 +0100
                Re: double free Ike Naar <ike@iceland.freeshell.org> - 2016-07-11 19:08 +0000
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-11 21:19 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 21:34 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 13:48 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-11 22:49 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 23:20 +0100
                Re: double free Udyant Wig <udyant.wig@gmail.com> - 2016-07-12 10:26 +0530
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-11 22:34 -0700
                Re: double free Ike Naar <ike@iceland.freeshell.org> - 2016-07-12 06:39 +0000
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-12 00:41 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-12 08:57 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-12 01:16 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-12 09:27 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-12 11:48 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-12 08:46 +0100
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-12 10:42 +0200
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-12 09:59 +0100
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-12 12:46 +0200
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 09:08 -0700
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-12 18:51 +0200
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 11:28 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-12 19:53 +0100
                Re: double free supercat@casperkitty.com - 2016-07-12 12:19 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 14:26 -0700
                Re: double free Ken Brody <kenbrody@spamcop.net> - 2016-07-12 11:00 -0400
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-12 16:18 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 08:44 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-12 09:24 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-12 17:34 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-12 09:52 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 09:40 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-12 18:22 +0100
                Re: double free Gareth Owen <gwowen@gmail.com> - 2016-07-13 18:33 +0100
                Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-07-13 14:00 -0400
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 19:16 +0100
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-18 09:15 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-18 09:04 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-18 11:10 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-20 08:52 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-20 09:36 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-21 18:23 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-12 08:42 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-12 11:24 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-12 11:52 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-12 13:18 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-12 16:42 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-12 17:21 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 09:35 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-12 18:08 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-12 18:14 +0100
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-18 10:01 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-18 18:20 +0100
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-21 09:26 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-21 18:57 +0100
                Re: double free Udyant Wig <udyant.wig@gmail.com> - 2016-07-22 23:41 +0530
                Re: double free BartC <bc@freeuk.com> - 2016-07-22 19:47 +0100
                Re: double free supercat@casperkitty.com - 2016-07-22 11:58 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-22 12:03 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-22 20:26 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-22 13:12 -0700
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-23 08:57 +0000
                Re: double free BartC <bc@freeuk.com> - 2016-07-23 10:21 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-23 11:08 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-23 12:36 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-23 07:14 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-23 16:41 +0100
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-23 19:17 +0000
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-23 20:42 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-23 12:51 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-23 21:50 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-23 14:17 -0700
                Re: double free luser droog <luser.droog@gmail.com> - 2016-07-23 15:53 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-23 20:55 -0700
                Re: double free luser droog <luser.droog@gmail.com> - 2016-07-23 22:21 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-24 10:35 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-24 02:55 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-24 04:05 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-24 14:03 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-24 14:24 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-24 15:15 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-24 16:01 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-24 11:36 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-24 19:52 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-24 12:14 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-24 11:13 -0700
                Re: double free Martin Shobe <mashobe9@gmail.com> - 2016-07-24 14:52 -0500
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-25 09:59 -0700
                Re: double free Martin Shobe <mashobe9@gmail.com> - 2016-07-25 19:32 -0500
                Re: double free supercat@casperkitty.com - 2016-07-25 07:39 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-24 10:55 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-24 08:30 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-23 11:11 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-23 12:39 -0700
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-23 20:25 +0000
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-22 12:51 -0700
                Re: double free supercat@casperkitty.com - 2016-07-22 13:18 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-24 08:23 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-24 19:36 +0100
                Re: double free albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-12-02 10:21 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-02 10:57 +0000
                Re: double free BartC <bc@freeuk.com> - 2016-12-02 12:33 +0000
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-12-02 14:07 +0100
                Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-12-02 10:19 -0500
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-12-02 08:56 -0800
                Re: double free "James R. Kuyper" <jameskuyper@verizon.net> - 2016-12-02 12:31 -0500
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-12-02 11:42 -0800
                Re: double free supercat@casperkitty.com - 2016-07-12 08:46 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 09:16 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-12 09:27 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 08:20 -0700
                Re: double free James Kuyper <jameskuyper@verizon.net> - 2016-07-12 12:47 -0400
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-12 22:21 +0000
                Re: double free BartC <bc@freeuk.com> - 2016-07-12 23:27 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-12 16:28 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-13 00:23 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 08:43 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 11:21 +0100
                Re: double free Jean-Marc Bourguet <jm@bourguet.org> - 2016-07-13 12:56 +0200
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 12:35 +0100
                Re: double free Jerry Stuckle <jstucklex@attglobal.net> - 2016-07-13 10:34 -0400
                Re: double free Cal Dershowitz <cal@example.invalid> - 2016-07-15 05:57 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 11:17 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-13 04:30 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 12:33 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 13:41 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 13:57 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-13 06:10 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-13 20:08 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 15:11 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 18:14 +0100
                Re: double free Jean-Marc Bourguet <jm@bourguet.org> - 2016-07-13 19:20 +0200
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 18:24 +0100
                Re: double free Robert Wessel <robertwessel2@yahoo.com> - 2016-07-15 00:51 -0500
                Re: double free luser droog <luser.droog@gmail.com> - 2016-07-15 02:18 -0700
                Re: double free "Osmium" <r124c4u102@comcast.net> - 2016-07-15 07:12 -0500
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-15 13:14 +0100
                Re: double free Rosario19 <Ros@invalid.invalid> - 2016-07-18 09:28 +0200
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 18:43 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-13 20:15 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 21:14 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-13 13:24 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 21:50 +0100
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-23 19:21 +0000
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-13 13:02 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 21:34 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-13 13:51 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-13 22:22 +0100
                Re: double free Robert Wessel <robertwessel2@yahoo.com> - 2016-07-15 01:08 -0500
                Re: double free Reinhardt Behm <rbehm@hushmail.com> - 2016-07-15 17:33 +0800
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-15 05:02 -0700
                Re: double free Reinhardt Behm <rbehm@hushmail.com> - 2016-07-15 21:15 +0800
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-15 14:48 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-15 08:02 -0700
                Re: double free Cal Dershowitz <cal@example.invalid> - 2016-07-18 01:42 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-18 03:07 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-13 22:01 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 22:14 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-13 14:31 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-13 23:03 +0100
                Re: double free "Osmium" <r124c4u102@comcast.net> - 2016-07-13 17:53 -0500
                Re: double free supercat@casperkitty.com - 2016-07-13 16:18 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-13 16:19 -0700
                Re: double free Jerry Stuckle <jstucklex@attglobal.net> - 2016-07-13 22:44 -0400
                Re: double free Jean-Marc Bourguet <jm@bourguet.org> - 2016-07-14 09:44 +0200
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-13 17:07 -0700
                Re: double free supercat@casperkitty.com - 2016-07-14 07:13 -0700
                Re: double free Robert Wessel <robertwessel2@yahoo.com> - 2016-07-15 01:18 -0500
                Re: double free Jerry Stuckle <jstucklex@attglobal.net> - 2016-07-13 10:46 -0400
                Re: double free Robert Wessel <robertwessel2@yahoo.com> - 2016-07-15 00:59 -0500
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-14 23:47 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 11:22 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 11:35 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-15 14:33 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 15:16 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 16:19 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-15 08:39 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 16:54 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-15 21:20 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-15 16:45 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 17:15 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 17:42 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-15 21:18 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-15 21:06 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-15 21:46 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-15 23:08 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-16 01:26 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-15 18:22 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-15 18:48 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-15 18:40 -0700
                Re: double free supercat@casperkitty.com - 2016-07-15 10:09 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-15 11:07 -0700
                Re: double free supercat@casperkitty.com - 2016-07-15 12:11 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-15 12:30 -0700
                Re: double free supercat@casperkitty.com - 2016-07-15 12:41 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-15 13:04 -0700
                Re: double free supercat@casperkitty.com - 2016-07-15 14:26 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-19 10:00 -0700
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-13 12:46 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 13:19 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 13:30 +0100
                Re: double free Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-13 20:53 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-13 21:37 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-13 05:22 -0700
                Re: double free supercat@casperkitty.com - 2016-07-13 07:07 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-14 19:31 +0100
                Re: double free supercat@casperkitty.com - 2016-07-14 12:10 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-14 23:16 +0100
                Re: double free supercat@casperkitty.com - 2016-07-14 16:00 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-14 12:34 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-14 20:57 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-14 13:15 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-14 21:27 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-14 21:31 +0100
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-18 09:46 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-19 13:32 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-19 13:46 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-19 06:00 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-19 09:23 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-19 09:38 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-19 17:51 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-19 18:22 +0100
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-23 09:02 +0000
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-19 11:42 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-19 12:27 -0700
                Re: double free Philip Lantz <prl@canterey.us> - 2016-07-21 10:02 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-21 10:25 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-21 18:27 +0100
                Re: double free Cal Dershowitz <cal@example.invalid> - 2016-07-29 00:42 -0700
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-23 08:59 +0000
                Re: double free BartC <bc@freeuk.com> - 2016-07-19 15:22 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-19 15:59 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-19 16:39 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-19 16:55 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-19 17:49 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-19 18:20 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-19 19:03 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-19 19:22 +0100
                sizeof (was Re: double free) Ken Brody <kenbrody@spamcop.net> - 2016-07-19 14:44 -0400
                Re: sizeof (was Re: double free) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-19 12:31 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-19 22:46 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-19 15:19 -0700
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-20 00:21 +0100
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-23 19:21 +0000
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-19 12:08 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-19 09:41 -0700
                Re: double free Tim Rentsch <txr@alumni.caltech.edu> - 2016-07-21 18:10 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-22 11:23 +0100
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-22 03:40 -0700
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-22 10:33 -0700
                Re: double free Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-07-22 12:47 -0700
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-12 22:18 +0000
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 10:53 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 21:20 +0100
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 13:56 -0700
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 22:39 +0100
                Re: double free David Brown <david.brown@hesbynett.no> - 2016-07-12 10:57 +0200
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 21:58 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 13:23 +0100
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-11 13:00 +0000
                Re: double free Keith Thompson <kst-u@mib.org> - 2016-07-11 10:44 -0700
                Re: double free Gareth Owen <gwowen@gmail.com> - 2016-07-11 19:10 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 20:22 +0100
                Re: double free BartC <bc@freeuk.com> - 2016-07-11 21:11 +0100
                Re: double free Gareth Owen <gwowen@gmail.com> - 2016-07-11 21:49 +0100
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 22:01 +0100
                Re: double free James Kuyper <jameskuyper@verizon.net> - 2016-07-11 09:09 -0400
                Re: double free Richard Heathfield <rjh@cpax.org.uk> - 2016-07-11 14:16 +0100
                Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-15 13:51 +0000
                Re: double free James Kuyper <jameskuyper@verizon.net> - 2016-07-15 12:04 -0400
                Re: double free Jean-Marc Bourguet <jm@bourguet.org> - 2016-07-11 17:51 +0200
            Re: double free raltbos@xs4all.nl (Richard Bos) - 2016-07-11 10:19 +0000
  Re: double free Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-07-05 08:57 -0600
  Re: double free James Kuyper <jameskuyper@verizon.net> - 2016-07-05 11:13 -0400
    Re: double free supercat@casperkitty.com - 2016-07-05 09:05 -0700
      Re: double free G G <gdotone@gmail.com> - 2016-07-05 16:38 -0700
    Re: double free G G <gdotone@gmail.com> - 2016-07-05 16:34 -0700
  Re: double free Nobody <nobody@nowhere.invalid> - 2016-07-06 04:10 +0100
    Re: double free Siri Cruise <chine.bleu@yahoo.com> - 2016-07-05 21:27 -0700
      Re: double free supercat@casperkitty.com - 2016-07-06 02:53 -0700
        Re: double free Siri Cruise <chine.bleu@yahoo.com> - 2016-07-06 06:09 -0700
          Re: double free supercat@casperkitty.com - 2016-07-06 07:53 -0700
    Re: double free "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-07-06 01:25 -0700
    Re: double free BartC <bc@freeuk.com> - 2016-07-06 11:12 +0100
  Re: double free Thiago Adams <thiago.adams@gmail.com> - 2016-11-27 09:52 -0800
    Re: double free supercat@casperkitty.com - 2016-11-27 10:05 -0800

csiph-web