[Bug c++/60019] [C++11] Bogus error: use of deleted function unique_ptr(const unique_ptr&)

[Bug c++/60019] [C++11] Bogus error: use of deleted function unique_ptr(const unique_ptr&)

[daniel.kruegler at googlemail dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60019

Daniel Krügler <daniel.kruegler at googlemail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |daniel.kruegler@googlemail.
                   |                            |com

--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
I don't think that this is related to the implementation of unique_ptr, instead
my guess is that gcc currently does not yet implement

http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#5

The code compiles well, if the destination object is not a const object or if
the initialization is direct-initialization. Before CWG 5 was reolved, it was
unclear whether the wording in 8.5 p17 (The bullet starting with: "If the
destination type is a (possibly cv-qualified) class type") was referring to a
destination type including or without it's cv qualification.

More evidence to that assumption is that the CWG 5 code example is currently
rejected by gcc as it would be expected to happen according to the "including
the cv-qualifier" interpretation.
>From gcc-bugs-return-442283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 01 15:06:33 2014
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/60024] global-buffer-overflow in init_regs_for_mode
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`024

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-02-01
                 CC|                            |abel at ispras dot ru
   Target Milestone|---                         |4.9.0
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> When GCC is bootstrapped with --with-build-config=bootstrap-asan
> r207375 gave
>
> spawn -ignore SIGHUP
> /export/build/gnu/gcc-asan/build-x86_64-linux/gcc/testsuite/gfortran3/../../
> gfortran
> -B/export/build/gnu/gcc-asan/build-x86_64-linux/gcc/testsuite/gfortran3/../..
> /
> -B/export/build/gnu/gcc-asan/build-x86_64-linux/x86_64-unknown-linux-gnu/32/
> libgfortran/
> /export/gnu/import/git/sources/gcc/gcc/testsuite/gfortran.dg/pr42294.f
> -fno-diagnostics-show-caret -fdiagnostics-color=never -O -O2
> -fselective-scheduling2 -fsel-sched-pipelining -funroll-all-loops -S -m32 -o
> pr42294.s^M
> =================================================================^M
> ^[[1m^[[31m=˜31==ERROR: AddressSanitizer: global-buffer-overflow on
> address 0x000003deb6cd at pc 0x12f89cf bp 0x7ffffba71eb0 sp 0x7ffffba71ea8^M
> ^[[1m^[[0m^[[1m^[[34mREAD of size 1 at 0x000003deb6cd thread T0^[[1m^[[0m^M
>     #0 0x12f89ce in init_regs_for_mode
> /export/gnu/import/git/sources/gcc/gcc/sel-sched.c:1124^M

(gdb) call ix86_hard_regno_mode_ok (cur_reg, mode)
$6 = false
(gdb) p cur_reg
$7 = 76
(gdb) p mode
$8 = DFmode
(gdb) p nregs
$9 = 2
(gdb) call ix86_hard_regno_mode_ok (cur_reg, mode)
$10 = false
(gdb)

[Bug c++/60019] [C++11] Bogus error: use of deleted function unique_ptr(const unique_ptr&)

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60019

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri May  9 18:16:11 2014
New Revision: 210284

URL: http://gcc.gnu.org/viewcvs?rev=210284&root=gcc&view=rev
Log:
    DR 5
    PR c++/60019
    * call.c (build_user_type_conversion_1): The copy-init temporary
    is cv-unqualified.

Added:
    trunk/gcc/testsuite/g++.dg/init/copy7.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c

[Bug c++/60019] [C++11] Bogus error: use of deleted function unique_ptr(const unique_ptr&)

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60019

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2014-05-09
                 CC|                            |jason at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk currently.  Is this important to get into 4.9?

[Bug c++/60019] [C++11] Bogus error: use of deleted function unique_ptr(const unique_ptr&)

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60019

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue May 13 17:39:56 2014
New Revision: 210391

URL: http://gcc.gnu.org/viewcvs?rev=210391&root=gcc&view=rev
Log:
    DR 5
    PR c++/60019
    * call.c (build_user_type_conversion_1): The copy-init temporary
    is cv-unqualified.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/g++.dg/init/copy7.C
Modified:
    branches/gcc-4_9-branch/gcc/cp/ChangeLog
    branches/gcc-4_9-branch/gcc/cp/call.c

[Bug c++/60019] [C++11] Bogus error: use of deleted function unique_ptr(const unique_ptr&)

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60019

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.9.1

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 4.9.1.

[Bug c++/60019] [C++11] Bogus error: use of deleted function unique_ptr(const unique_ptr&)

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60019

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ai.azuma at gmail dot com

--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
*** Bug 55335 has been marked as a duplicate of this bug. ***