Re: A: a new bug to old plain C

On 23/11/2025 21:45, Александр Поваляев via Gcc-help wrote:
> Hi there!
> 

This is getting /extremely/ frustrating.  /Please/ find some way to 
learn the C programming language - courses, books, good online resources.

And /please/ believe me when I say that people who have worked with C 
and C++ for decades, studied the standards, who serve on the standards 
committee, know better about these things than you do.  (I'm talking 
about Jonathan here, not myself - he really is a world-class expert here.)

> Either the links you've provided or the links you provided earlier
> (yesterday) are irrelevant, cause they are just discussing if it is safer
> to convert "Foo_Type **" to "const Foo_Type **" or not.
> 

The links are highly relevant.  They explain why you cannot convert from 
"char **" to "const char **".  That also explains why you cannot convert 
from "char **" to "const char * const * const".  Adding even more 
"const" qualifiers to the invalid conversion does not somehow magically 
make it work.

> Once again, we are not converting "char** to const char**", we're
> converting char** to const char * const * const".
> And we're not discussing if it is safer or not, we are discussing GCC
> compiler error.
> 

The compiler is generating an error message because you wrote invalid 
code.  The error - or bug, if you like - is in /your/ code.  Not the 
compiler.  GCC is doing its job correctly here.

> 
> Respectfully,
> Aleksandr G Povaliaev.
> 

I'm sorry, but signing the post with "respectfully" does not make it 
respectful.  You started the thread disrespectfully - insisting that 
there is a bug in GCC when you simply do not understand the relevant 
aspects of the C programming language.  And you have gone downhill since 
then, ignoring and rejecting the help and advice you have been given. 
Getting things wrong once is entirely understandable - this is a subtle 
point of the C language, and you are posting to a "help" list.  Doubling 
down on your ignorance when you have received the help and information 
you need, is a different matter entirely.

Your code is flawed.  You need to fix it.  Mindlessly repeating your 
misunderstandings about how you think C works will not do anything but 
annoy people.

David