[Bug c++/59759] New: internal compiler error: in unify, using std::enable_if on classes

["gereon.kremer at cs dot rwth-aachen.de" <gcc-bugzilla@gcc.gnu.org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59759

            Bug ID: 59759
           Summary: internal compiler error: in unify, using
                    std::enable_if on classes
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gereon.kremer at cs dot rwth-aachen.de

Created attachment 31798
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31798&action=edit
Source code

Im using gcc version 4.8.2 20131219 (prerelease) (GCC) on arch linux.
When the attached file is compiled with "g++ Test_GCC.cpp -std=c++11", it
crashes with the following output:

Test_GCC.cpp: In function ‘int main()’:
Test_GCC.cpp:21:7: internal compiler error: in unify, at cp/pt.c:17171
  f(map);
       ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
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From: "d.g.gorbachev at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/47889] [4.7 Regression] Segmentation fault in useless_type_conversion_p, at tree-ssa.c:1228
Date: Fri, 10 Jan 2014 16:21:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idG889

Dmitry Gorbachev <d.g.gorbachev at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #23485|0                           |1
        is obsolete|                            |

--- Comment #15 from Dmitry Gorbachev <d.g.gorbachev at gmail dot com> ---
Created attachment 31799
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id1799&actioníit
Backtrace from checked 4.7.4 build

> 4.7.4, not the prerelease?

The latest 4.7 release is 4.7.3 <http://gcc.gnu.org/gcc-4.7/>, 4.7.4 is still
pre.

I just tried the head of the 4.7 branch (r206505). Segmentation fault.