[Bug c++/66210] New: Variable template specialization does not work with alias-declarations

[Bug c++/66210] New: Variable template specialization does not work with alias-declarations

[bruno.manga95 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66210

            Bug ID: 66210
           Summary: Variable template specialization does not work with
                    alias-declarations
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bruno.manga95 at gmail dot com
  Target Milestone: ---

Created attachment 35571
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35571&action=edit
testcase

In code such as the following, alias-declarations causes a variable to be
instantatiated from the non-specialized variable template

using resultType = const char*;

template<typename T>
T pi = (T)(3.1415926535897932385);

template<>
resultType pi<resultType> = "pi";

NOTE: using a typedef does not generate the same error and the code compiles

[Bug c++/66210] Variable template specialization does not work with alias-declarations

[bruno.manga95 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66210

Bruno Manganelli <bruno.manga95 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|minor                       |normal

[Bug c++/66210] Variable template specialization does not work with alias-declarations

[daniel.kruegler at googlemail dot com]

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66210

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> ---
The problem seems to be fixed in gcc HEAD 6.0.0 20150521 (experimental).
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Subject: [Bug c++/66243] enum class value is allowed to be initialized by value from other enum class
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66243

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

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--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
The problem also occurs in gcc HEAD 6.0.0 20150521 (experimental).
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Subject: [Bug rtl-optimization/66237] [6 regression] FAIL: gcc.dg/tree-prof/pr34999.c compilation,  -fprofile-use -D_PROFILE_USE (internal compiler error)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf237

--- Comment #4 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
Created attachment 35593
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id5593&actioníit
Proposed patch

Please try this patch. I tested it on the attached profile and it seems to fix
the ICE.

[Bug c++/66210] Variable template specialization does not work with alias-declarations

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66210

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Thanks Daniel, I'm adding a testcase and closing the bug.

[Bug c++/66210] Variable template specialization does not work with alias-declarations

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66210

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |6.0

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Done.

[Bug c++/66210] Variable template specialization does not work with alias-declarations

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66210

--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu May 21 22:39:32 2015
New Revision: 223506

URL: https://gcc.gnu.org/viewcvs?rev=223506&root=gcc&view=rev
Log:
2015-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/66210
        * g++.dg/cpp1y/var-templ28.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/var-templ28.C
Modified:
    trunk/gcc/testsuite/ChangeLog