[Bug c++/85958] Make const qualifier error clear

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85958

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #5)
> I personally feel "bind" is not a word any programming course teaches, we
> say "passing parameters" or "passing arguments".

You pass arguments, which initialize parameters. Initialization of references
is called binding.


> 
> In addition, I feel we don't think we really need the word "reference"

If the parameter type wasn't a reference there would be no problem. Omitting
the reason it fails seems unhelpful.


> Therefore, I suggest the following:
> 
> $ g++ -o main main.cpp -Wall -Werror -Wconversion
> main.cpp: In function ‘int main()’:
> main.cpp:11:25: error: cannot pass ‘const int’ to non-const ‘int&’

No this is nonsense. You are not passing something to a reference, you are
passing it to the function. The object cannot be bound to the reference because
of the cv-qualifiers.

I'm keen to make the language clearer, but not by making it simply wrong about
what's happening!