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From: Michael S <already5chosen@yahoo.com>
Newsgroups: comp.lang.c
Subject: Re: C23 thoughts and opinions
Date: Sun, 26 May 2024 17:20:30 +0300
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On Sun, 26 May 2024 15:46:33 +0200
jak <nospam@please.ty> wrote:

> Michael S ha scritto:
> > On Sun, 26 May 2024 13:44:32 +0200
> > jak <nospam@please.ty> wrote:
> >   
> >> Keith Thompson ha scritto:  
> >>> jak <nospam@please.ty> writes:  
> >>>> Kaz Kylheku ha scritto:  
> >>>>> On 2024-05-24, jak <nospam@please.ty> wrote:  
> >>>>>> Bonita Montero ha scritto:  
> >>>>>>> Am 23.05.2024 um 21:49 schrieb Thiago Adams:  
> >>>>>>>> On 23/05/2024 16:25, Bonita Montero wrote:  
> >>>>>>>>> I ask myself what the point is in further developing a
> >>>>>>>>> language like this that can actually no longer be saved.  
> >>>>>>>> do you mean C++?
> >>>>>>>>     
> >>>>>>>
> >>>>>>> No, C.  
> >>>>>>
> >>>>>> I think you have a lot of confusion about programming
> >>>>>> languages. C and C++ are not comparable languages.  
> >>>>> Except for observations like that we can write useful,
> >>>>> production software that compiles as C or C++, but go on ...  
> >>>>
> >>>> Indeed there are c++ compilers who, if used to compile c code,
> >>>> could decide to call the c compiler to do the work, but if
> >>>> something in the code is not strictly c, then the compilation
> >>>> will be in c++, the size of the executable will increase
> >>>> significantly and will need of an internal or external runtimer
> >>>> to work. If it were the same thing you would not get different
> >>>> things.  
> >>>
> >>> Oh?  Do you know of a C++ compiler that actually behaves this way?
> >>> I've never heard of such a thing.
> >>>
> >>> C and C++ are closely related, and C and C++ compilers often share
> >>> backends, but the two languages have different grammars.  The gcc
> >>> command, for example, can invoke either a C or C++ compiler, but
> >>> it knows which language it's compiling based on the source file
> >>> name or command line options, before it's even seen the content.
> >>>
> >>> There are programs that are valid C and valid C++ but with
> >>> different behavior.  How would a compiler that behaves as you
> >>> describe cope with that?
> >>>      
> >>
> >> For example g++ makes something similar: if you pass a file .C it
> >> compile the C code but if the file (.C) contains C++ code then
> >> compile C++.
> >>  
> > 
> > No, it does not.
> > g++ compiles as C++ unless you tell it to compile as C with '-x c'
> > option.
> > 
> > 
> >   
> 
> You didn't read carefully or I didn't express myself well. I wrote
> that the g++ compile c++ even if it is written inside a .c file.
> However in doubt I preferred to try. If I pass to g++ a .c file that
> contains c code, it compiles without any option, perhaps because it
> reads as if it were c++ but in any case compiles it.
> 

It is easy to see that it was compiled as C++ rather than as c.
Look at the content of the generated object with 'objdump -d'.
You will see that the names of global functions and variables are
mangled.