[Bug c++/105483] New: injected-class-name and constructors diagnostic

[Bug c++/105483] New: injected-class-name and constructors diagnostic

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105483

            Bug ID: 105483
           Summary: injected-class-name and constructors diagnostic
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mpolacek at gcc dot gnu.org
  Target Milestone: ---

Consider:

struct X { };

void
g ()
{
  X::X x;
}

for which we emit

d.cc: In function ‘void g()’:
d.cc:6:3: error: ‘X::__ct ’ names the constructor, not the type
    6 |   X::X x;
      |   ^
d.cc:6:7: error: expected ‘;’ before ‘x’
    6 |   X::X x;
      |       ^~
      |       ;
d.cc:6:9: error: statement cannot resolve address of overloaded function
    6 |   X::X x;
      |         ^

which is too verbose and prints the internal "__ct" name.  For comparison:

$ xclang++ -c d.cc
d.cc:6:6: error: qualified reference to 'X' is a constructor name rather than a
type in this context
  X::X x;
     ^

[Bug c++/105483] [10/11/12/13 Regression] injected-class-name and constructors diagnostic

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105483

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |7.1.0
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-11-02
            Summary|injected-class-name and     |[10/11/12/13 Regression]
                   |constructors diagnostic     |injected-class-name and
                   |                            |constructors diagnostic
   Target Milestone|---                         |10.5
      Known to fail|                            |8.1.0
           Keywords|                            |needs-bisection
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC 7 produces:
<source>: In function 'void g()':
<source>:6:3: error: 'X::X' names the constructor, not the type
   X::X x;
   ^
<source>:6:8: error: expected ';' before 'x'
   X::X x;
        ^
<source>:6:9: error: statement cannot resolve address of overloaded function
   X::X x;
         ^

While GCC 8 produces the __ct diagnostic. At least that part is a regression.

[Bug c++/105483] [10/11/12/13 Regression] injected-class-name and constructors diagnostic

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105483

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug c++/105483] [10/11/12/13 Regression] injected-class-name and constructors diagnostic since r8-1739-g3b5c768c40c78618

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105483

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|needs-bisection             |
                 CC|                            |marxin at gcc dot gnu.org,
                   |                            |nathan at gcc dot gnu.org
            Summary|[10/11/12/13 Regression]    |[10/11/12/13 Regression]
                   |injected-class-name and     |injected-class-name and
                   |constructors diagnostic     |constructors diagnostic
                   |                            |since
                   |                            |r8-1739-g3b5c768c40c78618

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r8-1739-g3b5c768c40c78618.

[Bug c++/105483] [11/12/13/14 Regression] injected-class-name and constructors diagnostic since r8-1739-g3b5c768c40c78618

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105483

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.5                        |11.5

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.