[Bug c++/12266] New: incorrectly instantiating unneeded template

["nathan at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12266

           Summary: incorrectly instantiating unneeded template
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nathan at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu

Overload resolution causes instantiation of 'T Foo<void> (int)', when
trying 'void Baz (void (*)(int), int)'. that is not selected
by overload resolution, but we go ahead an instantiate the body of
Foo anyway (which fails).