[Bug c++/66788] New: [5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[Bug c++/66788] New: [5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

            Bug ID: 66788
           Summary: [5 Regression] Rejects instantiation of class
                    std::deque<long long unsigned int> with -m32
           Product: gcc
           Version: 5.1.1
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---
            Target: i?86-*-*

Created attachment 35922
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35922&action=edit
unincluded testcase

The testcase is rejected with GCC 5 and -std=c++11 -m32 with

In file included from
/usr/include/c++/5/x86_64-suse-linux/bits/c++allocator.h:33:0,
                 from /usr/include/c++/5/bits/allocator.h:46,
                 from /usr/include/c++/5/string:41,
                 from
/home/abuild/rpmbuild/BUILD/FreeOCL-0.3.6.svn.397/src/freeocl.h:22,
                 from
/home/abuild/rpmbuild/BUILD/FreeOCL-0.3.6.svn.397/src/freeocl.cpp:18:
/usr/include/c++/5/ext/new_allocator.h: In instantiation of ‘struct
__gnu_cxx::new_allocator<long long unsigned int>’:
/usr/include/c++/5/bits/allocator.h:92:11:   required from ‘class
std::allocator<long long unsigned int>’
/usr/include/c++/5/bits/alloc_traits.h:88:43:   required from ‘struct
std::allocator_traits<std::allocator<long long unsigned int> >’
/usr/include/c++/5/ext/alloc_traits.h:95:10:   required from ‘struct
__gnu_cxx::__alloc_traits<std::allocator<long long unsigned int> >’
/usr/include/c++/5/bits/stl_deque.h:462:21:   required from ‘class
std::_Deque_base<long long unsigned int, std::allocator<long long unsigned int>
>’
/usr/include/c++/5/bits/stl_deque.h:829:11:   required from ‘class
std::deque<long long unsigned int>’
/home/abuild/rpmbuild/BUILD/FreeOCL-0.3.6.svn.397/src/kernel.h:44:43:  
required from here
/usr/include/c++/5/ext/new_allocator.h:93:7: error: ‘const _Tp*
__gnu_cxx::new_allocator<_Tp>::address(__gnu_cxx::new_allocator<_Tp>::const_reference)
const [with _Tp = long long unsigned int;
__gnu_cxx::new_allocator<_Tp>::const_pointer = const long long unsigned int*;
__gnu_cxx::new_allocator<_Tp>::const_reference = const long long unsigned
int&]’ cannot be overloaded
       address(const_reference __x) const _GLIBCXX_NOEXCEPT
       ^

while it is accepted with GCC 5 and -m64 (or GCC 4.9 and both -m32 and -m64).
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/66788] [5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32
Date: Tue, 07 Jul 2015 11:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf788

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |libstdc++

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Actually more likely a libstdc++ issue.

[Bug libstdc++/66788] [5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

Richard Biener <rguenth at gcc dot gnu.org> changed:

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

[Bug libstdc++/66788] [4.9/5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|5.2                         |4.9.4
            Summary|[5 Regression] Rejects      |[4.9/5 Regression] Rejects
                   |instantiation of class      |instantiation of class
                   |std::deque<long long        |std::deque<long long
                   |unsigned int> with -m32     |unsigned int> with -m32

[Bug libstdc++/66788] [4.9/5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Reduced testcase:

#include <cstdint>
#include <deque>
typedef uint64_t cl_ulong __attribute__((aligned(8)));
std::deque<cl_ulong> args_qualifier;

[Bug c++/66788] [4.9/5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org
          Component|libstdc++                   |c++

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Jason, on the 4.9 branch this looks like it is caused by some C++ FE change.

Not sure what is correct behavior here (Jakub points out mangling ignores
the over-alignment).

[Bug c++/66788] [4.9/5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |trippels at gcc dot gnu.org

--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
reduced test case:

template <typename _Tp> class A {
  void address(_Tp &) const;
  void address(const _Tp &) const;
};
typedef long long cl_ulong __attribute__((aligned(8)));
template <typename _Tp, typename _Alloc = A<_Tp>> class B : _Alloc {};
B<cl_ulong> a;

[Bug c++/66788] [4.9/5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.8.5, 6.0

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Trunk accepts this and says:

freeocl.3.cpp:4:20: warning: ignoring attributes on template argument ‘cl_ulong
{aka long long unsigned int}’
 std::deque<cl_ulong> args_qualifier;
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Subject: [Bug c++/66788] [4.9/5 Regression] Rejects instantiation of class std::deque<long long unsigned int> with -m32
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf788

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> Not sure what is correct behavior here (Jakub points out mangling ignores
> the over-alignment).

Even ignoring the over-alignment, const cl_ulong& and cl_ulong& are different
types and I think it should be possible to overload on them.