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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60305] [4.7 Regression] ICE constexpr array of functions in template
Date: Sat, 01 Mar 2014 00:42:00 -0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 4.8.2
X-Bugzilla-Keywords: ice-on-valid-code
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X-Bugzilla-Who: reichelt at gcc dot gnu.org
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X-Bugzilla-Target-Milestone: 4.7.4
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60305

Volker Reichelt <reichelt at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.6.0, 4.8.3, 4.9.0
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|                            |2014-03-01
                 CC|                            |reichelt at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|ICE constexpr array of      |[4.7 Regression] ICE
                   |functions in template       |constexpr array of
                   |                            |functions in template
   Target Milestone|---                         |4.7.4
      Known to fail|                            |4.7.0, 4.8.0, 4.8.1, 4.8.2

--- Comment #2 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
Confirmed. Happens since GCC 4.7.0, but is already fixed on the trunk (for GCC
4.9.0) and on the 4.8 branch (for GCC 4.8.3). Valid testcase:

===========================================
template<int I> int foo() { return I; }

template<int... I> void bar()
{
  constexpr int (*X[])() = { foo<I>... };
}

template void bar<1,3,5>();
===========================================