[Bug c++/23287] New: Explicitly invoking destructor of template class

[eric dot tenorio at gmail dot com]

When explicitly invoking a template class destructor the compiler outputs a
compile-time error message, "expected class-name before '(' token."

NOTE: Same code compiles on 'gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)'

Found problem while compiling ACE-TAO 5.4 code and broke it down further for
simplicity.

=== g++ -v output ====
Reading specs from /usr/lib/gcc/i386-redhat-linux/3.4.4/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--disable-checking --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-java-awt=gtk --host=i386-redhat-linux
Thread model: posix
gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)

=== Command that triggers error message ===
g++ -c a.cpp

==== Compile-time error message ====
g++ -c a.cpp
a.cpp: In member function `void B<T>::delete_nodes()':
a.cpp:42: error: expected class-name before '(' token

==== a.ii ====
# 1 "a.cpp"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "a.cpp"


template<class T> class A
{
  public:

    A (void);
    ~A (void);

    void testfunc (void);
};

template <class T> A<T>::A (void) {}
template <class T> A<T>::~A (void) {}
template <class T> void A<T>::testfunc (void) {}


template <class T> class B
{
  public:

    B (void);
    ~B (void);

  protected:

    void delete_nodes (void);

    A<T> *head_;
};


template <class T> B<T>::B (void) {}

template <class T> B<T>::~B (void) {}

template <class T> void B<T>::delete_nodes (void)
{
  A<T> *temp = this->head_;

  if (temp)
    (temp)->~A();

  if (temp)
    (temp)->testfunc();
}

-- 
           Summary: Explicitly invoking destructor of template class
           Product: gcc
           Version: 3.4.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: eric dot tenorio at gmail dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: 3.4.4
  GCC host triplet: 3.4.4
GCC target triplet: 3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23287