[Bug c++/85959] g++ doesn't show second error

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85959

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Severity|normal                      |enhancement
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-01-06

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The carat was fixed in GCC 8:
<source>: In function 'int main()':
<source>:14:19: error: binding reference of type 'int&' to 'const int' discards
qualifiers
     strstripspace(unused, two);
                   ^~~~~~
<source>:4:6: note:   initializing argument 1 of 'void strstripspace(int&,
int&)'
 void strstripspace(int & value, int & two)
      ^~~~~~~~~~~~~


----- CUT ----
clang also only shows about the first argument:
<source>:14:5: error: no matching function for call to 'strstripspace'
    strstripspace(unused, two);
    ^~~~~~~~~~~~~
<source>:4:6: note: candidate function not viable: 1st argument ('const int')
would lose const qualifier
void strstripspace(int & value, int & two)
     ^
1 error generated.

GCC seems to try to match up const int with int& even.
Take:
void strstripspace(float & value, float & two);
void strstripspace(int & value, int & two);

int main()
{
    const int unused = 0;
    const int two = 0;

    strstripspace(unused, two);

    return 0;
}

GCC just outputs:
<source>: In function 'int main()':
<source>:9:19: error: binding reference of type 'int&' to 'const int' discards
qualifiers
    9 |     strstripspace(unused, two);
      |                   ^~~~~~
<source>:2:26: note:   initializing argument 1 of 'void strstripspace(int&,
int&)'
    2 | void strstripspace(int & value, int & two);
      |                    ~~~~~~^~~~~

While clang produces:
<source>:9:5: error: no matching function for call to 'strstripspace'
    strstripspace(unused, two);
    ^~~~~~~~~~~~~
<source>:1:6: note: candidate function not viable: no known conversion from
'const int' to 'float &' for 1st argument
void strstripspace(float & value, float & two);
     ^
<source>:2:6: note: candidate function not viable: 1st argument ('const int')
would lose const qualifier
void strstripspace(int & value, int & two);
     ^

I cannot decide if I like GCC's error message better or clang's.