[Bug c++/18207] New: wrong diagnostic for ill-formed implicitly-defined default constructor

[Bug c++/18207] New: wrong diagnostic for ill-formed implicitly-defined default constructor

[boris at kolpackov dot net]

$ cat >test.cxx
struct m
{
private:
  m (m const&);
};

struct s
{
  m m_;
};

struct s1 : s
{
  s1 ()
  {
  }
};

void f ()
{
  s1 s_;
}

$ g++-3.4 --version
g++-3.4 (GCC) 3.4.2 (Debian 3.4.2-3)
$ g++-3.4 -c test.cxx
test.cxx: In constructor `s1::s1()':
test.cxx:16: error: no matching function for call to `s::s()'
test.cxx:9: note: candidates are: s::s(const s&)

The statement "no matching function for call to `s::s()'" is wrong. According to
12.5.5 - 12.5.7 the default constructor s::s() is implicitly-declared and
defined but the definition is ill-formed due to "no matching function for call
to `m::m()'". Cheers!

-- 
           Summary: wrong diagnostic for ill-formed implicitly-defined
                    default constructor
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: boris at kolpackov dot net
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-linux-gnu
  GCC host triplet: i686-linux-gnu
GCC target triplet: i686-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18207

[Bug c++/18207] misleading diagnostic for ill-formed implicitly-defined default constructor

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-29 13:10 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |diagnostic
      Known to fail|                            |2.95 3.4.3 4.0.0 3.3.3 3.2.3
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-29 13:10:16
               date|                            |
            Summary|wrong diagnostic for ill-   |misleading diagnostic for
                   |formed implicitly-defined   |ill-formed implicitly-
                   |default constructor         |defined default constructor


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18207

[Bug c++/18207] misleading diagnostic for ill-formed implicitly-defined default constructor

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |minor
   Last reconfirmed|2004-10-29 13:10:16         |2005-01-28 06:20:36
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18207

[Bug c++/18207] misleading diagnostic for ill-formed implicitly-defined default constructor

[pcarlini at suse dot de]

------- Comment #2 from pcarlini at suse dot de  2007-08-17 16:15 -------
This is fixed in the active branches. Now the diagnostic is:

18207.C: In constructor 's::s()':
18207.C:8: error: no matching function for call to 'm::m()'
18207.C:4: note: candidates are: m::m(const m&)
18207.C: In constructor 's1::s1()':
18207.C:15: note: synthesized method 's::s()' first required here


-- 

pcarlini at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
      Known to work|                            |4.1.2 4.2.1 4.3.0
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18207