[Bug c++/39153] New: virtual default dtor not defined

[Bug c++/39153] New: virtual default dtor not defined

[bkoz at gcc dot gnu dot org]

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Compiling:

struct _Impl_base
{
  _Impl_base() = default;
  virtual ~_Impl_base() = default;
};

template<typename _Tp>
class _Impl : public _Impl_base
{ };

int main()
{
  _Impl<int> i;
  return 0;
}


Gives:
gcc version 4.4.0 20090208 (experimental) (GCC) 

%COMP.sh "-g -O0 -std=c++0x -fno-inline" vague_vs_default.cc
vague_vs_default.cc:4: warning: inline function ‘virtual
_Impl_base::~_Impl_base()’ used but never defined
vague_vs_default.cc:4: warning: inline function ‘virtual
_Impl_base::~_Impl_base()’ used but never defined

Which seems strange, as the base destructor is defined as default.

Also, the vauge linkage/vtable documentation bits here
http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118

may need to be updated or expanded to take into account defaulted destructors
vs. key method vtable emission.


-- 
           Summary: virtual default dtor not defined
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: documentation
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bkoz at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39153

[Bug c++/39153] virtual default dtor not defined

[jason at gcc dot gnu dot org]

-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-02-11 21:56:21
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39153

[Bug c++/39153] virtual default dtor not defined

[bkoz at gcc dot gnu dot org]

------- Comment #1 from bkoz at gcc dot gnu dot org  2009-02-11 22:13 -------
*** Bug 39158 has been marked as a duplicate of this bug. ***


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39153

[Bug c++/39153] virtual default dtor not defined

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2009-02-12 02:01 -------
Subject: Bug 39153

Author: jason
Date: Thu Feb 12 02:01:07 2009
New Revision: 144119

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=144119
Log:
        PR c++/39153
        * decl2.c (cp_write_global_declarations):
        Check DECL_DEFAULTED_FN, not DECL_ARTIFICIAL.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/defaulted9.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl2.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39153

[Bug c++/39153] virtual default dtor not defined

[jason at gcc dot gnu dot org]

------- Comment #3 from jason at gcc dot gnu dot org  2009-02-12 02:12 -------
Fixed.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39153