[Bug c++/26205] pointer to member template parameter can't be null

[Bug c++/26205] pointer to member template parameter can't be null

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26205

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|gcc-bugs at gcc dot gnu.org        |
         Resolution|---                         |DUPLICATE

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Nothing to fix here, besides maybe the casting bit in c++98 mode which is
PR10541.

*** This bug has been marked as a duplicate of bug 10541 ***

[Bug c++/26205] pointer to member template parameter can't be null

[jeffp at doomsday dot org]

------- Comment #3 from jeffp at doomsday dot org  2006-02-15 19:55 -------
The casting work-around doesn't compile under GCC.  It requires that the
template parameter be a constant-expression (which is true), which results in
the following error:

error: a casts to a type other than an integral or enumeration type cannot
appear in a constant-expression

I have yet to be able to figure out a work-around.  MSVC allows the cast, but
works with or without it.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26205

[Bug c++/26205] pointer to member template parameter can't be null

[bangerth at dealii dot org]

------- Comment #2 from bangerth at dealii dot org  2006-02-15 19:37 -------
icc gives essentially the same error as that one mentioned by Andrew for
Comeau (not surprisingly). As a workaround, you can always use an explicit
cast:
    Test<Simple, (int Simple::*)0> t2;


I believe the code is ok anyway, see 4.11/1.

W.


-- 

bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-02-15 19:37:18
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26205

[Bug c++/26205] pointer to member template parameter can't be null

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-10 01:19 -------
Comeau gives the following error:


"ComeauTest.c", line 19: error: argument of type "int" is incompatible with
          template parameter of type "int Simple::*"
      Test<Simple, NULL> t2;             // error, but should not be (works in
                   ^


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26205