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c++ - std::cout << __FUNCTION__ << std::endl fails

reply "Aneesh Dalvi" <aneesh tolv.ca> writes:
Does anyone know why the following code fails with the DMC compiler?

std::cout << __FUNCTION__ << std::endl;

This works with GCC and MSVC++.

__FUNCTION__ seems to be recognized by DMC, but still the code does not
compile.

Thanks
Jun 04 2004
parent reply Jerry van Dijk <windows jvdsys.demon.nl> writes:
"Aneesh Dalvi" <aneesh tolv.ca> writes:


 Does anyone know why the following code fails with the DMC compiler?
 
 std::cout << __FUNCTION__ << std::endl;



It works here with 8.38n and using stlport 4.5.3:

-------------------------------------------------------------------------------
D:\work>dir
 Volume in drive D is WorkDisk
 Volume Serial Number is 883F-94F1

 Directory of D:\work

05-06-2004  00:20       <DIR>          .
05-06-2004  00:20       <DIR>          ..
05-06-2004  00:13                   97 check.cpp
               1 File(s)             97 bytes
               2 Dir(s)  15.658.946.560 bytes free

D:\work>cat check.cpp
#include <iostream>

using namespace std;

int main()
{
        cout << __FUNCTION__ << endl;
}

D:\work>dmc check.cpp
link check,,,user32+kernel32/noi;


D:\work>dir
 Volume in drive D is WorkDisk
 Volume Serial Number is 883F-94F1

 Directory of D:\work

05-06-2004  00:20       <DIR>          .
05-06-2004  00:20       <DIR>          ..
05-06-2004  00:13                   97 check.cpp
05-06-2004  00:20              361.500 check.exe
05-06-2004  00:20                2.204 check.map
05-06-2004  00:20               28.275 check.obj
               4 File(s)        392.076 bytes
               2 Dir(s)  15.658.549.248 bytes free

D:\work>check
main
-------------------------------------------------------------------------------

Also checking if I have setup news properly :-)

-- 
--  Jerry van Dijk
--  Leiden, Holland
Jun 04 2004
parent reply "Aneesh Dalvi" <aneesh tolv.ca> writes:
Yes, this works:

#include <iostream>

int main() {
    std::cout << __FUNCTION__ << std::endl;
    return 0;
}

However, this does not:

#include <iostream>

class test {
public:
  test() { std::cout << __FUNCTION__ << std::endl; }
};

int main() {
    test x;
    return 0;
}

C:\projects>c:\dm\bin\dmc -cpp -Ic:\dm\stlport\stlport test2.cc
test2.cc(5) : Error: expression expected
test2.cc(5) : Warning 6: value of expression is not used
--- errorlevel 1


- aneesh



"Jerry van Dijk" <windows jvdsys.demon.nl> wrote in message
news:ullj37yn1.fsf jvdsys.demon.nl...

 "Aneesh Dalvi" <aneesh tolv.ca> writes:


 Does anyone know why the following code fails with the DMC compiler?

 std::cout << __FUNCTION__ << std::endl;



 It works here with 8.38n and using stlport 4.5.3:

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




 D:\work>dir
  Volume in drive D is WorkDisk
  Volume Serial Number is 883F-94F1

  Directory of D:\work

 05-06-2004  00:20       <DIR>          .
 05-06-2004  00:20       <DIR>          ..
 05-06-2004  00:13                   97 check.cpp
                1 File(s)             97 bytes
                2 Dir(s)  15.658.946.560 bytes free

 D:\work>cat check.cpp
 #include <iostream>

 using namespace std;

 int main()
 {
         cout << __FUNCTION__ << endl;
 }

 D:\work>dmc check.cpp
 link check,,,user32+kernel32/noi;


 D:\work>dir
  Volume in drive D is WorkDisk
  Volume Serial Number is 883F-94F1

  Directory of D:\work

 05-06-2004  00:20       <DIR>          .
 05-06-2004  00:20       <DIR>          ..
 05-06-2004  00:13                   97 check.cpp
 05-06-2004  00:20              361.500 check.exe
 05-06-2004  00:20                2.204 check.map
 05-06-2004  00:20               28.275 check.obj
                4 File(s)        392.076 bytes
                2 Dir(s)  15.658.549.248 bytes free

 D:\work>check
 main
 --------------------------------------------------------------------------




 Also checking if I have setup news properly :-)

 -- 
 --  Jerry van Dijk
 --  Leiden, Holland
Jun 04 2004
parent Jerry van Dijk <windows jvdsys.demon.nl> writes:
"Aneesh Dalvi" <aneesh tolv.ca> writes:


 However, this does not:

 #include <iostream>
 
 class test {
 public:
   test() { std::cout << __FUNCTION__ << std::endl; }
 };
 
 int main() {
     test x;
     return 0;
 }



Even worse, this does:
-------------------------------------------------------------
#include <iostream>

class test {
public:
  inline test();
  inline ~test();
};

test::test() {
  std::cout << __FUNCTION__ << std::endl;
}  inline ~test();


test::~test() {
  std::cout << __FUNCTION__ << std::endl;
}

int main() {
  test x;
}
------------------------------------------------------------

Since the dmc docs say:

| __FUNCTION__
|
|     Same as __FUNC__. Provided for Gnu CC compatibility.

it could be a bug if "Gnu CC" is also intended to mean gcc c++.

Note also that the output of __FUNCTION__ differs from gcc:

gcc prints:             dmc prints:
  test                    test::test
  ~test                   test::~test

-- 
--  Jerry van Dijk
--  Leiden, Holland
Jun 05 2004