[Bug libstdc++/66763] New: 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[Bug libstdc++/66763] New: 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

            Bug ID: 66763
           Summary: 25_algorithms/remove/requirements/explicit_instantiati
                    on/2.cc fails on AIX
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dje at gcc dot gnu.org
  Target Milestone: ---

25_algorithms/remove/requirements/explicit_instantiation/2.cc:34:22: error:
'std::value_type* std::remove(std::iterator_type, std::iterator_type, const
value_type&)' is not declared in 'std'
           const value_type&);

[Bug libstdc++/66763] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

--- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> ---
Created attachment 35909
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35909&action=edit
gzipped 2.ii pre-processed testcase

[Bug libstdc++/66763] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-07-04
     Ever confirmed|0                           |1

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Ville mentioned this to me too, happening on gcc112 (ppc64le-linux), I haven't
seen it though

[Bug libstdc++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|powerpc-ibm-aix*            |powerpc-ibm-aix*,
                   |                            |powerpc64le-unknown-linux-g
                   |                            |nu
                 CC|                            |trippels at gcc dot gnu.org

--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with the switch to C++14: r225272.

trippels@gcc2-power8 testsuite % g++ -std=c++98 -c -I./util/
25_algorithms/remove/requirements/explicit_instantiation/2.cc
trippels@gcc2-power8 testsuite % g++ -c -I./util/
25_algorithms/remove/requirements/explicit_instantiation/2.cc           
25_algorithms/remove/requirements/explicit_instantiation/2.cc:34:22: error:
‘std::value_type* std::remove(std::iterator_type, std::iterator_type, const
value_type&)’ is not declared in ‘std’
     const value_type&);
                      ^
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Subject: [Bug libstdc++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX
Date: Tue, 14 Jul 2015 09:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf763

--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
This is an old issue. It also fails with gcc-4.9 and std=c++11.

[Bug libstdc++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I don't see any problem in libstdc++, the function is right there in the
preprocessed output starting at line 34472

# 891
"/tmp/20150703/powerpc-ibm-aix7.1.0.0/libstdc++-v3/include/bits/stl_algo.h" 3
  template<typename _ForwardIterator, typename _Tp>
    inline _ForwardIterator
    remove(_ForwardIterator __first, _ForwardIterator __last,
    const _Tp& __value)

[Bug libstdc++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The difference is that we include ::remove in C++11 and later.

Reduced:

namespace std
{
    template<typename _FIter, typename _Tp>
      _FIter
      remove(_FIter, _FIter, const _Tp&);
}

extern "C" {
extern int remove (const char *__filename) throw ();
}

namespace std
{ 
  using ::remove;

  template<typename _ForwardIterator, typename _Tp>
    inline _ForwardIterator 
    remove(_ForwardIterator __first, _ForwardIterator __last,
    const _Tp& __value)
    { 
      return __first;
    }
}

namespace std
{
  struct value_type { };
  typedef value_type* iterator_type;

  template iterator_type remove(iterator_type, iterator_type,
    const value_type&);
}

[Bug c++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

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

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

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The reduced testcase fails on all targets, but is valid C++, so this is a FE
problem.

[Bug c++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #7)
> The reduced testcase fails on all targets

... with any -std option, at least as far back as GCC 4.3.6

[Bug c++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |6.0

[Bug c++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 57576 has been marked as a duplicate of this bug. ***

[Bug c++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #6)
> The difference is that we include ::remove in C++11 and later.

You had even forgot you filed PR 57576 for that :)

[Bug c++/66763] [6 Regression] 25_algorithms/remove/requirements/explicit_instantiation/2.cc fails on AIX

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66763

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Ha! Oops