[Bug c++/51747] New: [C++11] cannot call copy constructor using list-initialization

[Bug c++/51747] New: [C++11] cannot call copy constructor using list-initialization

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

             Bug #: 51747
           Summary: [C++11] cannot call copy constructor using
                    list-initialization
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: redi@gcc.gnu.org
                CC: jason@gcc.gnu.org


struct X {
   X() = default;
   X(const X&) = default;
#ifdef OK
   X(int) { }
#endif
};

X x;
X x2{x};

t.cc:10:7: error: too many initializers for 'X'

(It compiles fine if OK is defined.)

Should overload resolution choose the copy constructor?
If not, could there be a better diagnostic?

[Bug c++/51747] [C++11] cannot call defaulted copy constructor using list-initialization

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-02-02
     Ever Confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-02 06:07:37 UTC ---
Confirmed.

[Bug c++/51747] [C++11] cannot call defaulted copy constructor using list-initialization

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2013-04-25 11:30:48 UTC ---
This is http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3539.html#1467

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mjbshaw at hotmail dot com

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 60592 has been marked as a duplicate of this bug. ***

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |SUSPENDED

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|SUSPENDED                   |ASSIGNED

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
I don't think it needs to be suspended; the direction is clear even if the
issue hasn't been moved to DR yet.

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Created attachment 32436
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32436&action=edit
patch

Here's a fix.  I suppose it should probably wait until after 4.9.0.

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Apr 11 18:25:02 2014
New Revision: 209314

URL: http://gcc.gnu.org/viewcvs?rev=209314&root=gcc&view=rev
Log:
    DR 1467
    PR c++/51747
    * decl.c (reshape_init_r): Handle a single element of class type.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/initlist83.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/g++.dg/init/aggr4.C

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.10.0

--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for the next release.

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

Ville Voutilainen <ville.voutilainen at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |ville.voutilainen at gmail dot com
         Resolution|FIXED                       |---

--- Comment #8 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
This case fails:

struct base {
};

struct derived : base {
    derived(const base &state)
    : base{state} // Gcc, Clang, and EDG reject.
    {}
};

void f(base b) {
    derived d{b};

}

Should this be a separate bug? The call of the implicitly-defaulted
copy constructor fails using list-initialization, so this seems like
it should be part of the same PR.

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[tom at honermann dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

Tom Honermann <tom at honermann dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tom at honermann dot net

--- Comment #9 from Tom Honermann <tom at honermann dot net> ---
Note that call of the implicitly-defaulted copy constructor using
list-initialization is accepted for aggregate data members (verified using gcc
trunk (5.0 (c++-concepts branch), svn revision 219158))

$ cat t.cpp 
struct base {
};

struct encapsulate {
    encapsulate(const base &state)
    : b{state} // accepted.
    {}
    base b;
};

void f(base b) {
    encapsulate e{b};
}

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #11 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Also,

struct base {
        int x;
};

struct derived : base {
    derived(const base &state)
    : base{state}
    {}
};

is diagnosed with

base-aggr-init2.cpp: In constructor ‘derived::derived(const base&)’:
base-aggr-init2.cpp:7:17: error: cannot convert ‘const base’ to ‘int’ in
initialization
     : base{state}
                 ^

so it doesn't look like Core 1467 is handled in base class initializers
at all.
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Subject: [Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #10 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
This code fails with the current trunk:

struct B {};
struct D : B {D(B b) : B{b} {}};


base-aggr-init.cpp: In constructor ‘D::D(B)’:
base-aggr-init.cpp:2:27: error: too many initializers for ‘B’
 struct D : B {D(B b) : B{b} {}};
                           ^

As far as I can see, the function process_init_constructor_record in typeck2.c 
emits the diagnostic.
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Subject: [Bug c/64790] New: gcc generates unreliable code on arm with -mstructure-size-boundary2
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd790

            Bug ID: 64790
           Summary: gcc generates unreliable code on arm with
                    -mstructure-size-boundary2
           Product: gcc
           Version: 4.8.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mittorn at sibmail dot com

After rebuilding many of system libraries with -mstructure-size-boundary2 i
found that fsck.fat does not work propertly and all gtk applications does not
correctly handle input and xfce4-desktop shows icons with wrong coordinates
After rebuilding dosfstools and libX11 problem was solved

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|5.0                         |5.2

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 5.1 has been released.

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #13 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu May  7 16:46:49 2015
New Revision: 222881

URL: https://gcc.gnu.org/viewcvs?rev=222881&root=gcc&view=rev
Log:
        DR 1467
        PR c++/51747
        * typeck2.c (digest_init_r): Fix single element list.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/initlist95.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/typeck2.c

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #14 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu May  7 16:46:58 2015
New Revision: 222882

URL: https://gcc.gnu.org/viewcvs?rev=222882&root=gcc&view=rev
Log:
        DR 1467
        PR c++/51747
        * typeck2.c (digest_init_r): Fix single element list.

Added:
    branches/gcc-5-branch/gcc/testsuite/g++.dg/cpp0x/initlist95.C
Modified:
    branches/gcc-5-branch/gcc/cp/ChangeLog
    branches/gcc-5-branch/gcc/cp/typeck2.c

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org

--- Comment #15 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.

[Bug c++/51747] [DR 1467] [C++11] cannot call defaulted copy constructor using list-initialization

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51747

--- Comment #16 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jun  9 16:56:12 2015
New Revision: 224289

URL: https://gcc.gnu.org/viewcvs?rev=224289&root=gcc&view=rev
Log:
        DR 1467
        PR c++/51747
        * typeck2.c (digest_init_r): Replace previous change with
        gcc_unreachable.

Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/typeck2.c