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alnhfa
Beginner
123 Views

icc12 does not support std::move?

The following program works well with gcc-4.3. When I use icc12, it said:
move.cc(11): error: namespace "std" has no member "move"
fun(std::move(a));
^
Is there any workaround?
Thank you very much.
[cpp]#include void fun(const int&a){ std::cout<

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4 Replies
JenniferJ
Moderator
123 Views

Not sure why it doesn't compiler.
On Windows if you've got VS2010 and icl, icl will compile and run fine.

It's probably a bug on Linux. I'll file a bug report for it.

thanks,
Jennifer
alnhfa
Beginner
123 Views

I found the definition of std::move in bits/stl_move.h (line 26 of the following code).
When compiled with gcc -std=c++0x, __GXX_EXPERIMENTAL_CXX0X__ was defined, so std::move was defined.
But when compiled with icpc -std=c++0x, __GXX_EXPERIMENTAL_CXX0X__ was not defined, as a result std::move was not defined.

part of bits/stl_move.h:
[cpp]#ifndef _STL_MOVE_H
#define _STL_MOVE_H 1

#include 
#include 

#ifdef __GXX_EXPERIMENTAL_CXX0X__
#include 

_GLIBCXX_BEGIN_NAMESPACE(std)

  // 20.2.2, forward/move
  template
    struct identity
    {
      typedef _Tp type;
    };

  template
    inline _Tp&&
    forward(typename std::identity<_Tp>::type&& __t)
    { return __t; }

  template
    inline typename std::remove_reference<_Tp>::type&&
    move(_Tp&& __t)
    { return __t; }

_GLIBCXX_END_NAMESPACE

#define _GLIBCXX_MOVE(_Tp) std::move(_Tp)
#else
#define _GLIBCXX_MOVE(_Tp) (_Tp)
#endif
[/cpp]



heavenbird
Beginner
123 Views

I had the same issue with std::move() on Linux.
Apparently the -std=c++0x -D__GXX_EXPERIMENTAL_CXX0X approach didnt' work, I got lots of compilation errors regarding STL, so I hand copied the move() function into my program:
  1. template
  2. struct remove_reference
  3. { typedef _Tp type; };
  4. template
  5. struct remove_reference<_Tp&>
  6. { typedef _Tp type; };)
  7. template
  8. struct remove_reference<_Tp&&>
  9. { typedef _Tp type; };
  10. template
  11. inline typename remove_reference<_Tp>::type&&
  12. move(_Tp&& __t)
  13. { return __t; }
And my corresponding copy constructor was:
  1. template matrix:: matrix(matrix&& x)
  2. {*this = move(x);}

then I got this error message:
error: an rvalue reference cannot be bound to an lvalue
{ return __t; }
^
detected during:
instantiation of "remove_reference<_Tp>::type &&move(_Tp &&) [with _Tp=matrix &]
Is my copy constructor wrong or something to do with the Intel compiler ??
I was using XE12 with update 4 and compiler option:
-std=c++0x -O3 -fno-omit-frame-pointer -opt-prefetch=3 -nolib-inline -inline-level=2 -parallel-Qoption,cpp,--extended_float_type,-mkl=parallel
Ubuntu 10.4 with gcc 4.4.3.
Thanks alot !!
Haining
JenniferJ
Moderator
123 Views

Hello, Good news. this issue has been fixed in the Intel C++ Composer XE 2013 for Linux. if your support service is not expired, it is free for you to upgrade it. Thanks, Jennifer
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