[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011.01.27 05:33:20
     Ever Confirmed|0                           |1

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-27 05:33:20 UTC ---
Is this fixed?

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |ASSIGNED

--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> 2011-01-27 15:13:49 UTC ---
Yes.

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

Jason Merrill <jason at gcc dot gnu.org> changed:

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

--- Comment #10 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-14 05:09:25 UTC ---
Closing.

[Bug c++/44909] New: Copy constructors implicitly deleted

[marc dot glisse at normalesup dot org]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1319 bytes --]

The following code compiles fine in C++98 with any version of g++, compiles
fine in C++0X with g++-4.4, but fails in C++0X with g++-4.6 with the error
message:

bug.cc: In function ‘void ouin(const Ray&)’:
bug.cc:35:9: error: use of deleted function ‘Ray::Ray(const Ray&)’
bug.cc:28:8: error: ‘Ray::Ray(const Ray&)’ is implicitly deleted because the
default definition would be ill-formed:

I hope I didn't remove anything essential while reducing the example (started
with 500k lines...).

struct Coord
{
        Coord();
        Coord(const Coord&);
};

template<typename _Tp>
struct array
{
        array();
        _Tp _M_instance[1];
};

struct Ray;

struct Vector
{
        array<Coord> base;
        Vector();
        Vector(const Ray &) ;
};

struct Point
{
        Vector base;
};

struct Ray
{
        array<Point> base;
};

void ouin (Ray const& r1)
{
        Ray r2=r1;
}


-- 
           Summary: Copy constructors implicitly deleted
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marc dot glisse at normalesup dot org
  GCC host triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[jason at gcc dot gnu dot org]

------- Comment #1 from jason at gcc dot gnu dot org  2010-07-13 22:24 -------
Subject: Bug 44909

Author: jason
Date: Tue Jul 13 22:23:49 2010
New Revision: 162159

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162159
Log:
        PR c++/44909
        * cp-tree.h (struct lang_type_class): Add has_user_opeq.
        (TYPE_HAS_USER_OPEQ): New.
        * decl.c (grok_special_member_properties): Set it.
        * class.c (add_implicitly_declared_members): Don't lazily declare
        constructors/operator= if a base or member has a user-declared one.
        (check_bases_and_members, check_bases): Adjust.
        (check_field_decls, check_field_decl): Adjust.
        * method.c (synthesized_method_walk): Initialize check_vdtor.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/implicit6.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/class.c
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/method.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/parse/error28.C


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2010-07-14 00:01 -------
Fixed.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[marc dot glisse at normalesup dot org]

------- Comment #3 from marc dot glisse at normalesup dot org  2010-07-14 14:08 -------
Created an attachment (id=21199)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21199&action=view)
extra testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[marc dot glisse at normalesup dot org]

------- Comment #4 from marc dot glisse at normalesup dot org  2010-07-14 14:14 -------
The patch (or another one committed recently) seems to have broken the attached
testcase (as you can see from the names, this comes from the same code),
including in C++98 mode. If it is unrelated, sorry for adding it to this bug
instead of creating a new one.

(I am not reopening the bug, you probably know better than me what the
appropriate action is)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[paolo dot carlini at oracle dot com]

------- Comment #5 from paolo dot carlini at oracle dot com  2010-07-14 14:30 -------
I can confirm the new testcase doesn't compile anymore. Let's re-open this PR
to be safe.


-- 

paolo dot carlini at oracle dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[paolo dot carlini at oracle dot com]

------- Comment #6 from paolo dot carlini at oracle dot com  2010-07-14 14:45 -------
I can also confirm that r162158 accepted zut.cc and r162159 doesn't.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909

[Bug c++/44909] [C++0x] Copy constructors implicitly deleted

[jason at gcc dot gnu dot org]

------- Comment #7 from jason at gcc dot gnu dot org  2010-07-15 20:45 -------
Subject: Bug 44909

Author: jason
Date: Thu Jul 15 20:45:35 2010
New Revision: 162233

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162233
Log:
        PR c++/44909
        * call.c (add_function_candidate): If we're working on an implicit
        declaration, don't consider candidates that won't match.
        * typeck.c (same_type_ignoring_top_level_qualifiers_p): Now a fn.
        * cp-tree.h (same_type_ignoring_top_level_qualifiers_p): Adjust.

        Revert:
        * cp-tree.h (struct lang_type_class): Add has_user_opeq.
        (TYPE_HAS_USER_OPEQ): New.
        * decl.c (grok_special_member_properties): Set it.
        * class.c (add_implicitly_declared_members): Don't lazily declare
        constructors/operator= if a base or member has a user-declared one.
        (check_bases_and_members, check_bases): Adjust.
        (check_field_decls, check_field_decl): Adjust.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/implicit7.C
    trunk/gcc/testsuite/g++.dg/cpp0x/implicit8.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/cp/class.c
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/typeck.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/implicit6.C


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44909