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Groups > comp.lang.c > #167332

Re: Are there any conformant C compilers?

From Bart <bc@freeuk.com>
Newsgroups comp.lang.c
Subject Re: Are there any conformant C compilers?
Date 2022-08-30 14:58 +0100
Organization Aioe.org NNTP Server
Message-ID <tel51m$j95$1@gioia.aioe.org> (permalink)
References (12 earlier) <tehqrg$vuvb$1@dont-email.me> <2f38674d-81b0-417d-9fe9-d5abc2fcfc3bn@googlegroups.com> <teijh8$14cpj$1@dont-email.me> <39f810b7-0146-402b-9f21-374299576709n@googlegroups.com> <tekrfu$1f4lr$1@dont-email.me>

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On 30/08/2022 12:15, David Brown wrote:
> On 30/08/2022 02:51, bart c wrote:

> (Being C++, this is really off-topic for c.l.c., but it might be of 
> interest to people here.)
> 
> 
> In C++, you can write at file scope :
> 
> int fib(int a) {
>      if (a < 2) return 1;
>      return fib(a - 1) + fib(a - 2);
> }
> 
> 
> int x = fib(5);
> int y = fib(40);
> 
> 
> The compiler may choose, as an optimisation, to pre-compute "fib(5)" and 
> use constant initialisation equivalent to "int x = 8;", so that the 
> memory for the variable "x" gets loaded with the value 8 before main() 
> or any other "real" code of the program runs.  (You are familiar with 
> this initialisation procedure from C.)
> 
> But for y, and optionally for x, the compiler will use run-time 
> initialisation.  In effect, it generates "int y;" and a code section 
> that executes "y = fib(40);" and is run pre-main.
> 
> Sometimes you don't want the possibility of having such run-time 
> initialisation, with all its potential complications such as startup 
> time, initialisation order, protection against race conditions for 
> function-local statics called from multiple threads, etc.  But given the 
> code above, you cannot easily tell which, if either, of the variable 
> initialisations is done with a simple constant copy.
> 
> To solve this, you first have to add "constexpr" to the "fib" function. 
>   That tells the compiler that if it is given a constant expression 
> argument, the function can be evaluated at compile time to give a 
> constant expression result (while also still being usable at runtime - 
> "consteval" is the alternative to say that the function is compile-time 
> only and can never be used at runtime).  This places certain 
> restrictions on the function - it has to be "pure", at least for the 
> particular constant values that you use in the program, but that's fine 
> here.
> 
> Next, you label the variables as "constinit".  This tells the compiler 
> that these functions must be initialised as constants, or compilation 
> will fail :
> 
> constexpr int fib(int a) {
>      if (a < 2) return 1;
>      return fib(a - 1) + fib(a - 2);
> }
> 
> constinit int x = fib(5);
> constinit int y = fib(40);
> 
> 
> Now the compiler has no choice but to treat this as "int x = 8;" and 
> "int y = 165580141;".  If the compiler can't do the calculation at 
> compile time (such as if I'd written fib(46), which at 2971215073 
> overflows a 32-bit int, or fib(41) which exceeds gcc's standard limit of 
> the number of steps it allows in a compile-time execution), then the 
> compiler halts with an error.
> 
> 
> So "constinit" gives you tighter control of such initialisation.  Note 
> that the variables "x" and "y" are still variables - it is only the 
> initialisation that is done by a constant, they are not constants 
> themselves (as they would be with "constexpr int x = fib(5);".  Indeed, 
> the line "constinit int x = fib(5);" is equivalent to :
> 
> constexpr int x_init = fib(5);
> int x = x_init;

OK, thanks.

So 'constinit' means something should be evaluated before execution 
(where there is a choice or possibility that it can be done after 
execution starts, although I can still see problems where x, y, z refer 
to each other, but only one or two use constinit).

And 'constexpr' treats them as readonly, but also allows such an 
expression to be considered a guaranteed compile-time expression, unlike 
static const, suitable for fixed arrays, switch cases, and for constant 
reduction.

Yet, you also say constexpr expressions can have their address taken, 
and can use up storage, which is quite unlike a #define constant 
(earlier you had equated these two).

So with between const, constinit, constexpr (plus enum and #define), 
with all their subtle differences, it is still not that clear, and there 
still isn't ONE feature that is a named constant, pure and simple.

I'm not allowed to mention my stuff, but I'm referring to one that works 
like 'enum', but specifically intended for arbitrary named scalar values 
of a dominated type.

Now that I've briefly reinstated a proper newsreader, I can show my 
earlier table in full; the columns show Yes when the desired attribute 
is True:

                                    #define   enum   const  constexpr

  Uses normal scope rules           No        Yes    Yes    Yes
  Won't create VLAs                 Yes       Yes    No?    ?
  Can't take their address          Yes       Yes    No     No?
  Cannot modify                     Yes       Yes    Yes    Yes?
  Can be used in switch cases       Yes       Yes    No     Yes?
  Can be reduced in expressions     Yes       Yes    ??     Yes?
  Can have any scalar type          Yes?       No     Yes    Yes
  Can be used for static data init  Yes       Yes    No     Yes?
  Not dependent on compiler         Yes       Yes    No     Yes?
  Uses storage                      No        No     Yes?   Yes?
  Value not context dependent       No        Yes    Yes    Yes

(Last entry is new; for #define X = A+B, the value of X depends on the 
local values of A, B, whatever they are; it is not determined once at 
the point of definition.

'Use storage' is from the language's POV; target instruction sets may 
not support immediate operands for all types, and are forced to use 
memory, but this applies also to literals like 123.456.)

Notice the right-hand two columns either have lots of Nos, or lots of 
question marks. The ideal feature will have solid Yeses.

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Thread

Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-08-25 02:33 +0000
  Re: Are there any conformant C compilers? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-08-25 03:00 +0000
    Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-08-26 00:22 +0000
      Re: Are there any conformant C compilers? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-08-26 16:48 +0000
  Re: Are there any conformant C compilers? bart c <bart4858@gmail.com> - 2022-08-25 03:01 -0700
    Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-08-25 14:29 +0000
      Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-08-25 08:10 -0700
        Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-08-25 16:23 +0000
          Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-25 20:53 +0200
          Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-08-26 06:56 -0700
            Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-26 17:29 +0200
              Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-26 13:44 -0700
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-26 13:56 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-26 16:01 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-28 10:27 +0200
                Re: Are there any conformant C compilers? bart c <bart4858@gmail.com> - 2022-08-28 03:52 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-28 15:05 +0200
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-28 17:00 -0700
                Re: Are there any conformant C compilers? bart c <bart4858@gmail.com> - 2022-08-29 15:16 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-30 09:38 +0200
                Re: Are there any conformant C compilers? bart c <bart4858@gmail.com> - 2022-08-30 04:03 -0700
                Re: Are there any conformant C compilers? Anton Shepelev <anton.txt@gmail.com> - 2022-08-31 01:20 +0300
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 09:14 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 06:19 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 06:11 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-28 17:20 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 12:31 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 12:49 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-28 21:29 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-28 17:49 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-29 02:58 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-28 19:51 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-29 10:54 +0100
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-12 05:13 -0700
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-12 13:55 +0000
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-12 15:06 +0100
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-12 15:22 +0000
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-12 17:04 +0100
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-12 17:39 +0000
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-12 17:40 +0000
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-13 15:52 -0700
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-13 17:24 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-28 22:55 +0200
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-28 22:51 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 14:57 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-29 00:46 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 16:13 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-29 08:47 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 20:13 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-28 20:30 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-29 09:36 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 00:43 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 10:44 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-31 04:50 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-31 05:48 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 14:31 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-31 15:15 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 16:41 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-31 08:55 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-31 17:43 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 18:37 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-31 19:30 +0100
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-08-31 18:47 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 20:37 +0100
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-08-31 19:47 +0000
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-01 09:45 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-01 11:55 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-01 05:23 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-01 14:20 +0100
                Re: Are there any conformant C compilers? Manfred <noname@add.invalid> - 2022-09-03 02:20 +0200
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-03 00:25 +0000
                Re: Are there any conformant C compilers? Manfred <noname@add.invalid> - 2022-09-03 02:46 +0200
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-03 10:11 +0200
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-03 12:54 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-03 12:52 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-03 21:08 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-03 12:46 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-01 01:25 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-01 11:17 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-01 12:04 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-01 16:06 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-04 23:24 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-31 11:39 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 18:57 +0200
                Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-09-02 17:37 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-02 23:51 +0100
                Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-09-03 01:23 +0000
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-02 20:42 -0700
                Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-09-03 14:34 +0000
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-03 17:39 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-03 12:00 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-03 14:45 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-03 17:40 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-03 17:30 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-04 15:02 +0200
                Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-09-04 22:45 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-05 01:02 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-05 08:22 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-05 12:28 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-05 15:52 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-05 15:15 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-05 22:54 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-05 22:49 +0100
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-05 23:05 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-06 01:41 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-06 09:39 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-06 10:50 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-06 15:29 +0200
                Re: Are there any conformant C compilers? Anton Shepelev <anton.txt@g{oogle}mail.com> - 2022-09-06 17:05 +0300
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-06 15:43 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-06 17:19 +0200
                Re: Are there any conformant C compilers? tTh <tth@none.invalid> - 2022-09-06 18:19 +0200
                Re: Are there any conformant C compilers? Öö Tiib <ootiib@hot.ee> - 2022-09-08 06:18 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-07 18:10 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-07 20:31 +0200
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-07 19:41 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-07 22:05 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-08 10:07 +0200
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-05 21:42 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-05 23:11 +0100
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-05 23:03 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-06 01:02 +0100
                Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-09-05 12:27 +0000
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-09-05 21:40 +0000
                Re: Are there any conformant C compilers? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-09-05 14:55 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-03 20:24 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-03 22:30 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-04 00:19 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-04 12:35 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-04 14:17 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-04 15:20 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-04 15:58 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-04 18:00 +0100
                Re: Are there any conformant C compilers? Manfred <noname@add.invalid> - 2022-09-04 19:26 +0200
                Re: Are there any conformant C compilers? antispam@math.uni.wroc.pl - 2022-09-03 16:24 +0000
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-03 18:23 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-03 13:56 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-31 06:52 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 15:06 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 12:50 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 15:19 +0200
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-28 16:51 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-29 09:45 +0200
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-29 10:04 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-29 04:59 -0700
                Re: Are there any conformant C compilers? Öö Tiib <ootiib@hot.ee> - 2022-08-29 07:32 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-29 16:47 +0200
                Re: Are there any conformant C compilers? bart c <bart4858@gmail.com> - 2022-08-29 17:51 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-30 13:15 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-30 14:58 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-30 15:54 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-30 09:17 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-30 18:34 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 11:25 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 14:14 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 15:28 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 15:02 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-31 15:28 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 17:06 +0200
                Re: Are there any conformant C compilers? scott@slp53.sl.home (Scott Lurndal) - 2022-08-31 15:29 +0000
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-31 17:48 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-31 19:58 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-08-31 20:31 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-31 13:01 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-31 15:26 -0700
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-31 15:42 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-01 10:00 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-01 04:35 -0700
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-01 15:10 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-02 00:09 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-02 09:30 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-02 13:24 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-02 05:56 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-02 15:14 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-02 16:19 +0100
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-02 17:52 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-02 10:01 -0700
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-02 11:50 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-02 12:18 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-02 20:45 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-02 13:08 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-02 21:41 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-02 13:55 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-02 23:29 +0100
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-09-02 16:25 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-03 10:23 +0200
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-03 13:07 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-03 15:06 +0200
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-11 21:22 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-12 12:01 +0100
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-13 07:40 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-12 12:32 +0100
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-12 09:33 -0700
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-13 07:34 -0700
                Re: Are there any conformant C compilers? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-09-13 16:41 +0000
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-14 07:41 -0700
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-14 11:06 -0700
                Re: Are there any conformant C compilers? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-09-15 01:03 +0000
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-16 06:52 -0700
                Re: Are there any conformant C compilers? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-09-15 00:14 +0000
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-15 17:29 -0700
                Re: Are there any conformant C compilers? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-09-19 02:33 +0000
                Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-11 21:07 -0700
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-02 11:03 -0700
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-09-02 20:47 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-02 15:52 +0200
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-02 16:01 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-02 19:22 +0200
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-02 10:50 -0700
                Re: Are there any conformant C compilers? Bart <bc@freeuk.com> - 2022-09-01 00:30 +0100
                Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-31 21:35 +0100
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-09-01 10:14 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-30 07:58 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-30 17:49 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-30 09:02 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-30 18:36 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-30 09:25 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-30 05:31 -0700
                Re: Are there any conformant C compilers? David Brown <david.brown@hesbynett.no> - 2022-08-30 17:08 +0200
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-30 08:40 -0700
                Re: Are there any conformant C compilers? Thiago Adams <thiago.adams@gmail.com> - 2022-08-30 08:50 -0700
                Re: Are there any conformant C compilers? Opus <ifonly@youknew.org> - 2022-08-27 20:04 +0200
    Re: Are there any conformant C compilers? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-08-25 17:03 +0100
    Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-25 09:50 -0700
      Re: Are there any conformant C compilers? bart c <bart4858@gmail.com> - 2022-08-25 12:04 -0700
        Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-25 12:25 -0700
  Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-08-25 08:23 -0700
    Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-25 09:58 -0700
      Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-08-26 07:51 -0700
        Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-26 11:50 -0700
          Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-08-26 19:45 -0700
            Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-26 22:03 -0700
              Re: Are there any conformant C compilers? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-08-27 08:14 -0700
                Re: Are there any conformant C compilers? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-08-27 11:23 -0700
  Re: Are there any conformant C compilers? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-08-25 12:41 -0700
  Re: Are there any conformant C compilers? Kaz Kylheku <480-992-1380@kylheku.com> - 2022-08-25 20:30 +0000

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