[Bug c++/52233] New: ICE segmentation fault with non-recursive templates

[Bug c++/52233] New: ICE segmentation fault with non-recursive templates

[pubby.8 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52233

             Bug #: 52233
           Summary: ICE segmentation fault with non-recursive templates
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: pubby.8@gmail.com


I'm getting a compiler segfault with the following code:

template <typename t>
struct foo {
  template <template <typename...> class... xs>
  using type = int;
};

template <typename t, template <typename...> class... xs>
struct bar {
  using type = typename foo<t>::template type<xs...>;
};

bar<int, foo> x;

> In instantiation of ‘struct bar<int, foo>’:
> 12:15:   required from here
> 7:55: internal compiler error: Segmentation fault

If I manually expand the parameter 't' then it compiles:

using type = typename foo<int>::template type<xs...>;

[Bug c++/52233] ICE segmentation fault with non-recursive templates

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52233

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-02-20
     Ever Confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-20 21:39:43 UTC ---
Confirmed.

[Bug c++/52233] ICE segmentation fault with using-declaration

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52233

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-04 23:37:19 UTC ---
This works in 4.7.2 and mainline. I'm adding the testcase to mainline and
closing the PR.

[Bug c++/52233] ICE segmentation fault with using-declaration

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52233

--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2012-10-04 23:48:20 UTC ---
Author: paolo
Date: Thu Oct  4 23:48:16 2012
New Revision: 192109

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192109
Log:
2012-10-04  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/52233
    * g++.dg/cpp0x/alias-decl-23.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/alias-decl-23.C
Modified:
    trunk/gcc/testsuite/ChangeLog

[Bug c++/52233] ICE segmentation fault with using-declaration

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52233

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.7.1

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-04 23:52:24 UTC ---
Done.