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Date: Mon, 06 Feb 2006 12:25:00 -0000
Subject: [Bug c++/26122]  New: [4.0/4.1/4.2 regression] Pure specifiers for templates causing trouble
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The following invalid code snippet is accepted by GCC since at least
GCC 2.95.3:

====================================
struct A
{
    template<int> void foo() = 0;
};
====================================


A similar code snippet causes an ICE since GCC 4.0.0:

====================================
struct A
{
    template<int> void foo() = 1;
};
====================================

  bug.cc:3: internal compiler error: in grokfield, at cp/decl2.c:899
  Please submit a full bug report, [etc.]

It was rejected before, but only because the pure specifier was malformed,
and not because it was present at all:

  bug.cc:3: error: invalid initializer for virtual method `void A::foo()'


-- 
           Summary: [4.0/4.1/4.2 regression] Pure specifiers for templates
                    causing trouble
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, accepts-invalid, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26122