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Groups > comp.lang.c > #43498

Re: Constant strings

From James Kuyper <jameskuyper@verizon.net>
Newsgroups comp.lang.c
Subject Re: Constant strings
Date 2014-04-24 07:45 -0400
Organization A noiseless patient Spider
Message-ID <ljath7$ulm$1@dont-email.me> (permalink)
References (16 earlier) <02S5v.55118$iZ5.28539@fx17.am4> <5357F31E.1090105@verizon.net> <9WS5v.52882$hB4.38502@fx20.am4> <lj9m9q$hjh$1@dont-email.me> <3Y46v.117235$%n2.57715@fx30.am4>

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On 04/24/2014 05:37 AM, BartC wrote:
> "Stephen Sprunk" <stephen@sprunk.org> wrote in message
> news:lj9m9q$hjh$1@dont-email.me...
>> On 23-Apr-14 12:39, BartC wrote:
> 
> [The meaning of 'const']
>>> I think I have a pretty good idea what it does,
>>
>> Your responses in this thread seem to indicate otherwise.
>>
>> At minimum, you don't have a "pretty good idea" of how to use it.
> 
> Let's see:
> 
> (1) It really means 'read-only'

For an object whose type is itself const-qualified, rather than being
merely a pointer to a const-qualified type, it also means "cannot be
modified after initialization with defined behavior".

> (2) It's an attribute applied to a type
> 
> (3) Such a type can be used pretty much everywhere that a non-const type can

I would say that the following item constitutes an exception to the
preceding item, and they should both therefore be re-written to
acknowledge that relationship.

> (4) Attempts to write to an l-value with a read-only attribute raise a
> compiler diagnostic, except:

This applies not only to explicit attempts to write to the object, but
also to certain constructs that merely put the object at risk of being
written to. The prime example of this is passing a 'const T*' to a
function where the corresponding parameter has the type 'T*'. That means
that the function could, without containing any constraint violations in
the function itself, attempt to write through that parameter - so the
function call itself has been made a constraint violation. This is
perhaps the single most useful feature enabled by 'const'.

Keep in mind that a diagnostic is required because such uses of
const-qualified types are constraint violations. That also gives an
implementation permission to reject the program. If the implementation
chooses not to reject the program, and if the user chooses to execute
the translated program, the behavior is also undefined. That's the most
seriously negative thing that C standard says about any program construct.

> (5) An object with a read-only type attribute can be initialised in its
> declaration (even with a runtime value for a non-static object); and:
> 
> (6) A function parameter with a read-only type attribute can be initialised
> from an argument that has non-read-only attribute
> 
> (7) Implicit coercions from non-read-only to read-only versions of the same
> type ( T to const T) are allowed.
> 
> (8) Implicit coercions from read-only to non-read-only versions of the same
> type (const T to T) raise a compiler diagnostic.

More accurately, such conversions do not occur implicitly at all. The
diagnostic message is side-effect of the fact that the conversion did
NOT occur. It is the use of a const-qualified type in a context where it
is incompatible with the required type, that is the actual cause of the
constraint violation.

> (9) Read-only attributes can be used by the compiler as optimisation hints,
> as well helping to decide which kind of data segments static data can be
> stored in.

That is a side-effect of the fact that the use a const-qualified types
in certain contexts leaves the behavior of the entire program undefined,
so that there is no such thing as incorrect behavior in those contexts.
An implementor is therefore free to let the behavior in those contexts
be whatever is most convenient, rather than whatever it is that the
programmer might have thought was reasonable.

> (10) Read-only attributes can be applied to any level of any
> type-specification, which means a complex type-spec can have any number of
> read-only attributes (not including the multiple attributes that some
> compilers allow at each level)

You should clarify that you're referring to levels of indirection.
'const' is a type-qualifier, and as such can only appear in locations
where type-qualifiers are allowed by the syntax, though it can be mixed
in with any of the other kinds of declaration specifiers; their relative
order has no significance. What you're referring to is the fact that
'const' has a different meaning depending upon whether it appears to the
left or to the right of any given '*' in the declaration.

> (11) Read-only attributes can be applied to scalars, structs and pointers,
> but not to arrays.

<nitpick>That's redundant, since pointer types are scalar types. unions
can also be declared 'const'.</nitpick>

Could you provide a citation for the array exception? Perhaps you're
thinking of the _Atomic type-qualifier, for which application to an
array type would be a constraint violation (6.7.3p2)?

> (12) Casts can be used to convert read-only to non-read-only and vice versa
> 
> If that lot (which is is off the top of my head, so apologies if the terms
> aren't quite right) isn't a 'pretty good' summary of how 'const' works, then
> I will admit I have absolutely no idea what it does.

It is a pretty good summary; the objections I've raised are relatively
minor - if I wrote up my own summary I'd expect Keith, at least, to be
able find at least as many minor errors in my summary. He's annoyingly
good at finding such errors - but the annoyance is with myself, for
making the errors, not with him, for finding them.

Which makes it all the more confusing that you've said so many
ridiculous things about 'const' that are not justified by any of the
items from the above summary (I'm NOT referring to your subjective
judgment that 'const' is useless). If you can't use the facts you've
listed above to reach correct conclusions about how 'const' is used,
then you don't really understand those facts, even if you can list them
out correctly. Possibly your mistaken belief that use of 'const' calls
for frequent use of (const T*) casts is merely due to your deliberate
lack of experience with using 'const'.
-- 
James Kuyper

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Thread

Constant strings "BartC" <bc@freeuk.com> - 2014-04-18 11:45 +0100
  Re: Constant strings Richard Damon <Richard@Damon-Family.org> - 2014-04-18 07:34 -0400
  Re: Constant strings G G <gdotone@gmail.com> - 2014-04-18 05:23 -0700
    Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-18 17:16 +0100
      Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-18 11:08 -0700
      Re: Constant strings G G <gdotone@gmail.com> - 2014-04-18 13:11 -0700
  Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-18 10:21 -0400
    Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-18 08:45 -0700
    Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-18 16:48 +0100
      Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-18 09:21 -0700
      Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-19 09:09 +1200
        Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-18 23:53 +0100
          Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-18 23:06 +0000
            Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-19 03:57 -0700
              Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-19 23:41 +1200
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-19 06:21 -0700
                Re: Constant strings Barry Schwarz <schwarzb@dqel.com> - 2014-04-19 10:04 -0700
                Re: Constant strings Barry Schwarz <schwarzb@dqel.com> - 2014-04-19 16:54 -0700
                Re: Constant strings Seungbeom Kim <musiphil@bawi.org> - 2014-04-19 17:54 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-19 13:20 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-19 23:32 +0100
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-19 23:38 +0000
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-19 17:28 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-20 10:53 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-20 14:29 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-20 23:41 +0100
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-21 11:14 +1200
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-21 13:05 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-21 11:11 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-20 19:44 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-21 10:51 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-21 13:29 -0400
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-21 11:04 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 11:31 +0100
                Re: Constant strings Martin Shobe <martin.shobe@yahoo.com> - 2014-04-22 06:24 -0500
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 13:34 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-22 09:19 -0400
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 15:00 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 07:53 -0700
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-22 12:48 -0400
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-22 07:28 -0400
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 05:46 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 07:45 -0700
                Re: Constant strings Ike Naar <ike@iceland.freeshell.org> - 2014-04-22 16:34 +0000
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 10:10 -0700
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-22 11:50 -0500
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 18:48 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-22 14:02 -0400
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 19:48 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-22 15:28 -0400
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-22 19:48 -0500
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-23 11:56 +0100
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-23 12:59 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-23 08:21 -0400
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-23 14:09 +0100
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-23 14:19 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-23 08:40 -0400
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-23 11:56 -0400
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-23 11:10 -0700
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-23 19:19 -0500
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-23 19:19 -0700
                Re: Constant strings Robert Wessel <robertwessel2@yahoo.com> - 2014-04-23 23:53 -0500
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-24 11:55 +0000
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-24 11:27 -0500
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-24 20:03 +0000
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-24 17:16 -0500
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-23 17:39 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-23 13:06 -0400
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-23 10:25 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-23 11:30 -0700
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-23 20:55 +0000
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-23 21:53 -0700
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-24 17:05 +1200
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-24 00:59 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-23 18:39 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-23 14:53 -0400
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-23 21:09 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-23 19:23 -0400
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-25 10:52 -0500
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-23 19:36 -0500
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-24 10:37 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-24 07:45 -0400
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-24 13:15 +0100
                Re: Constant strings Martin Shobe <martin.shobe@yahoo.com> - 2014-04-24 08:33 -0500
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-24 09:47 -0400
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-24 15:09 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-24 12:07 -0400
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-24 18:23 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-24 14:49 -0400
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-24 13:48 -0500
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-24 12:32 -0700
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-24 23:57 -0500
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-25 08:31 -0400
                Re: Constant strings Martin Shobe <martin.shobe@yahoo.com> - 2014-04-25 09:51 -0500
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-25 16:45 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-25 09:07 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-25 17:33 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-25 11:38 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-25 11:42 -0700
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-25 10:58 -0500
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-25 11:29 -0700
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-25 15:10 -0400
                Re: Constant strings Martin Shobe <martin.shobe@yahoo.com> - 2014-04-25 19:06 -0500
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-26 05:39 -0400
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-26 04:07 -0700
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-26 12:50 +0100
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-26 05:03 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-26 11:23 -0700
                Re: Constant strings gazelle@shell.xmission.com (Kenny McCormack) - 2014-04-26 19:13 +0000
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-26 23:54 +0200
                Re: Constant strings Richard Damon <Richard@Damon-Family.org> - 2014-04-26 18:47 -0400
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-26 23:01 +0000
                Re: Constant strings Seungbeom Kim <musiphil@bawi.org> - 2014-04-26 18:09 -0700
                Re: Constant strings gazelle@shell.xmission.com (Kenny McCormack) - 2014-04-27 01:22 +0000
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-27 04:09 +0200
                Re: Constant strings David Thompson <dave.thompson2@verizon.net> - 2014-05-25 16:44 -0400
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-05-25 14:43 -0700
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-27 04:09 +0200
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-27 05:36 +0000
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-27 06:42 -0700
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-27 02:42 +0000
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-27 04:45 +0200
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-27 14:13 -0500
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-27 20:11 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 03:22 +0100
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-28 10:00 +0100
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 11:24 +0100
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-28 12:30 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 13:58 +0100
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-28 12:22 +0000
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-28 08:53 -0700
                Re: Constant strings gazelle@shell.xmission.com (Kenny McCormack) - 2014-04-28 16:10 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 18:11 +0000
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-28 11:34 -0700
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-28 19:01 +0000
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-28 11:06 +0000
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-28 12:48 +0100
                Re: Constant strings Richard Damon <Richard@Damon-Family.org> - 2014-04-28 08:11 -0400
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 14:04 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 12:55 +0100
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-28 13:23 +0100
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 13:47 +0100
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-28 06:01 -0700
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-29 08:43 +1200
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 21:08 +0000
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-29 09:32 +1200
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 22:41 +0100
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 22:00 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 23:18 +0100
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-28 15:43 -0700
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-28 23:23 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 22:47 +0000
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-28 23:17 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-29 01:18 +0100
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-29 00:31 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-29 01:58 +0100
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-29 01:13 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-29 03:19 +0100
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-29 03:31 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-29 04:21 +0000
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-29 04:29 +0000
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-29 09:14 +0200
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-29 14:05 +0100
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-29 00:37 -0700
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-29 13:36 +0200
                Re: Constant strings ralph <nt_consulting@yahoo.com> - 2014-04-29 07:49 -0500
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-29 06:28 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-29 07:37 -0700
                Re: Constant strings David Brown <david.brown@hesbynett.no> - 2014-04-29 17:15 +0200
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-29 20:58 +0000
                Re: Constant strings David Brown <david.brown@hesbynett.no> - 2014-04-30 10:16 +0200
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-29 16:04 +0000
                Re: Constant strings gazelle@shell.xmission.com (Kenny McCormack) - 2014-04-29 16:10 +0000
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-29 09:58 -0700
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-30 12:46 +0200
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-29 14:51 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-29 16:05 +0000
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-29 01:53 +0000
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-28 23:11 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 23:29 +0000
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-29 00:18 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 21:52 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-28 23:08 +0100
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-28 22:31 +0000
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-29 00:54 +0100
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-28 23:10 +0100
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-29 11:28 +1200
                Re: Constant strings gazelle@shell.xmission.com (Kenny McCormack) - 2014-04-27 06:31 +0000
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-26 12:27 +0100
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-26 13:11 +0100
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-26 13:50 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-26 11:26 -0700
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-27 02:21 +0100
                Re: Constant strings Martin Shobe <martin.shobe@yahoo.com> - 2014-04-26 08:05 -0500
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-26 11:39 -0700
                Re: Constant strings Martin Shobe <martin.shobe@yahoo.com> - 2014-04-26 16:27 -0500
                Re: Constant strings Ian Zimmerman <itz@buug.org> - 2014-04-27 10:46 -0700
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-26 22:46 -0400
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-27 10:08 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-27 07:35 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-27 16:35 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-27 12:28 -0700
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-27 12:36 +0100
                Re: Constant strings James Kuyper <jameskuyper@verizon.net> - 2014-04-27 23:14 -0400
                Re: Constant strings Seungbeom Kim <musiphil@bawi.org> - 2014-04-26 18:03 -0700
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-27 02:33 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-24 07:49 -0700
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-25 03:03 +0100
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-25 22:50 +0100
                Re: Constant strings Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2014-04-24 20:20 -0600
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-24 23:31 -0700
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-25 15:24 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-25 08:31 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-24 07:58 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-26 13:38 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-26 11:50 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-24 07:42 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-24 08:43 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-23 11:28 -0700
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-23 18:42 +0000
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-24 14:03 -0500
                Re: Constant strings glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-23 20:49 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-23 21:21 +0000
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-23 10:50 -0500
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-22 19:41 -0500
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 09:43 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 18:19 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 11:45 -0700
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 20:01 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 12:19 -0700
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-23 11:01 -0500
                Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-22 15:21 -0500
                Re: Constant strings Richard <rgrdev_@gmail.com> - 2014-04-20 11:08 +0100
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 02:26 -0700
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-22 21:36 +1200
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 13:14 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 07:25 -0700
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 08:29 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 09:35 -0700
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 09:54 -0700
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 10:17 -0700
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 10:31 -0700
                Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 02:33 -0700
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-22 21:37 +1200
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-22 07:17 -0700
              Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-19 13:42 +0100
              Re: Constant strings Ike Naar <ike@iceland.freeshell.org> - 2014-04-19 15:42 +0000
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-19 16:19 +0000
              Re: Constant strings Seungbeom Kim <musiphil@bawi.org> - 2014-04-19 17:47 -0700
          Re: Constant strings Stephen Sprunk <stephen@sprunk.org> - 2014-04-22 11:00 -0500
            Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 18:36 +0100
              Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-23 09:38 +1200
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-22 23:25 +0100
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-23 10:48 +1200
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-23 12:37 +0100
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-23 13:47 +0100
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-23 14:03 +0100
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-24 09:14 +1200
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-23 23:37 +0100
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-24 10:54 +1200
                Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-24 00:52 +0100
                Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-24 01:04 +0000
                Re: Constant strings Ian Collins <ian-news@hotmail.com> - 2014-04-24 13:16 +1200
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-23 19:14 -0700
                Re: Constant strings Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-24 03:41 +0100
                Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-23 16:04 -0700
  Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-18 08:53 -0700
    Re: Constant strings Tim Rentsch <txr@alumni.caltech.edu> - 2014-04-20 16:02 -0700
  Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-18 16:13 +0000
    Re: Constant strings "BartC" <bc@freeuk.com> - 2014-04-18 18:34 +0100
      Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-18 11:06 -0700
      Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-18 18:54 +0000
        Re: Constant strings Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-18 14:15 -0700
  Re: Constant strings Rosario193 <Rosario@invalid.invalid> - 2014-04-20 20:15 +0200
    Re: Constant strings Rosario193 <Rosario@invalid.invalid> - 2014-04-20 22:13 +0200
      Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-20 14:31 -0700
    Re: Constant strings Keith Thompson <kst-u@mib.org> - 2014-04-20 14:30 -0700
      Re: Constant strings Rosario193 <Rosario@invalid.invalid> - 2014-04-21 02:43 +0200
        Re: Constant strings Kaz Kylheku <kaz@kylheku.com> - 2014-04-21 03:12 +0000
          Re: Constant strings Rosario193 <Rosario@invalid.invalid> - 2014-04-21 09:08 +0200

csiph-web