[Bug c++/33660] New: gettid has not been declared

[Bug c++/33660] New: gettid has not been declared

[razin at avaya dot com]

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Hello!

Upgraded to gcc 4.2.1 and ran into a following issue:
test case:
#include <iostream>
#include <sstream>
#include <sys/types.h>
#include <linux/unistd.h>
#include <errno.h>
// Declare the gettid syscall.
_syscall0(pid_t, gettid);
int main()
{
        std::cout<<"Test for gettid: "<<std::gettid()<<endl;
        return 0;
}

It works on gcc 3.6. Incluede all the proper header according to man pages, but
compiler returns:
getid.cpp:10: error: ‘gettid’ has not been declared
getid.cpp:10: error: expected constructor, destructor, or type conversion
before ‘;’ token
getid.cpp: In function ‘int main()’:
getid.cpp:16: error: ‘gettid’ was not declared in this scope

Sergey


-- 
           Summary: gettid has not been declared
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: razin at avaya dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33660

[Bug c++/33660] gettid has not been declared

[razin at avaya dot com]

------- Comment #1 from razin at avaya dot com  2007-10-04 18:35 -------
Created an attachment (id=14296)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14296&action=view)
test case


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33660

[Bug c++/33660] gettid has not been declared

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2007-10-04 18:40 -------
And this is not a bug with GCC or libstdc++ as gettid is an GNU libc extension.

Try using gettid instead of std::gettid.  Doing that and qualifying endl with
std:: allows for this program to compile.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33660

[Bug c++/33660] gettid has not been declared

[bangerth at dealii dot org]

------- Comment #3 from bangerth at dealii dot org  2007-10-04 18:41 -------
Why should gettid be in namespace std? It's not a standard C++ function,
so the header file declares it to be in the global namespace.

W.


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bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bangerth at dealii dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33660

[Bug c++/33660] gettid has not been declared

[razin at avaya dot com]

------- Comment #4 from razin at avaya dot com  2007-10-04 18:46 -------
(In reply to comment #3)
> Why should gettid be in namespace std? It's not a standard C++ function,
> so the header file declares it to be in the global namespace.
> 
> W.
> 

(In reply to comment #3)
> Why should gettid be in namespace std? It's not a standard C++ function,
> so the header file declares it to be in the global namespace.
> 
> W.
> 

Ok. That's just the test. I can remove namespace completely:

#include <sys/types.h>
#include <linux/unistd.h>
#include <errno.h>

int main()
{
        gettid();
        return 0;
}

Same result. Actually I figured it will bring up questions, sor


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33660

[Bug c++/33660] gettid has not been declared

[razin at avaya dot com]

------- Comment #5 from razin at avaya dot com  2007-10-04 19:37 -------
Ok. That's just the test. I can remove namespace completely:

#include <sys/types.h>
#include <linux/unistd.h>
#include <errno.h>

int main()
{
        gettid();
        return 0;
}

Same result. Actually I figured it will bring up questions, sorry


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razin at avaya dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|INVALID                     |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33660

[Bug c++/33660] gettid has not been declared

[pcarlini at suse dot de]

------- Comment #6 from pcarlini at suse dot de  2007-10-04 20:05 -------
Try asking for help on some Linux mailing list, because gettid is (or was) a
Linux extension, actually. In any case, what is available or not on such system
headers has nothing to do with GCC.


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pcarlini at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33660