GNU g++ behavior while using noncopyable class

[Alexander Vinokur]

 

 

 

Hi,

 

I have the following problem.

 

While compiling program below, behavior of g++ differs from Intel and aCC HP compilers.

g++ detects error.

 

Any suggestions?

 

Is there any option in g++ that allows to compile this program?

 

Thanks

 

 

// -----------------------

// File test2.cpp (BEGIN)

// --------

class noncopyable

{

   protected:

      noncopyable() {}

      ~noncopyable() {}

   private:

      noncopyable( const noncopyable& );

      const noncopyable& operator=3D( const noncopyable& );

};

 

// --------------

class Foo : private noncopyable

{

                public:

                Foo (){}

};

 

// -------------

static Foo func1()

{

                return Foo();

}

 

// --------------

int main()

{

                return 0;

}

 

// File test2.cpp (END)

 

 

 

-------------------------

Compilers:

 

Intel compiler:

> icpc -V

Intel(R) C++ Intel(R) 64 Compiler XE for applications running on

Intel(R) 64, Version 12.0.4.191 Build 20110427

Copyright (C) 1985-2011 Intel Corporation.  All rights reserved.

 

aCC HP compiler:

> aCC -V

aCC: HP C/aC++ B3910B A.06.25.01 [May 16 2010]

 

 

GNU g++ compiler:

> g++ -v

Using built-in specs.

Target: x86_64-redhat-linux

Configured with: ../configure --prefix=3D/usr --mandir=3D/usr/share/man --

infodir=3D/usr/share/info --enable-shared --enable-threads=3Dposix --

enable-checking=3Drelease --with-system-zlib --enable-__cxa_atexit --

disable-libunwind-exceptions --enable-libgcj-multifile --enable-

languages=3Dc,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=3Dgtk --

disable-dssi --disable-plugin --with-java-home=3D/usr/lib/jvm/java-1.4.2-

gcj-1.4.2.0/jre --with-cpu=3Dgeneric --host=3Dx86_64-redhat-linux

Thread model: posix

gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)

 

 

-------------------------

Compilation.

 

 

> icpc test2.cpp

// No errors

 

> aCC test2.cpp

// No errors

 

> g++ test2.cpp

test2.cpp: In copy constructor Foo::Foo(const Foo&):

test2.cpp:11: error: noncopyable::noncopyable(const noncopyable&) is

private

test2.cpp:17: error: within this context

test2.cpp: In function Foo func1():

test2.cpp:25: note: synthesized method Foo::Foo(const Foo&) first

required here

 

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