[Bug c++/18182] New: Incorrect processing of __attribute__ by the C++ parser

[Bug c++/18182] New: Incorrect processing of __attribute__ by the C++ parser

[uweigand at gcc dot gnu dot org]

The C++ parser appears to ignore attributes that apply to nested declarators.

E.g. when trying to define an 'SImode-pointer to int' by 
  typedef int * __attribute__ ((mode (SI))) t;
on s390x-ibm-linux, the C++ parser silently ignores the attribute.

The following test case:

#include <stdio.h>
typedef int * __attribute__ ((mode (SI))) t;

int main (void)
{
  t x;
  printf ("%d %d\n", sizeof (x), sizeof (*x));
}

gives the correct result ("4 4") when compiled with gcc,
but the incorrect result "8 4" when compiled with g++.

[ For a simpler test case on systems without non-Pmode pointers,
try using an invalid mode like:
typedef int * __attribute__ ((mode (TI))) t;
With gcc, this gives an error; g++ accepts the code. ]

See the discussion at 
http://gcc.gnu.org/ml/gcc/2004-10/msg01081.html
for further details.

-- 
           Summary: Incorrect processing of __attribute__ by the C++ parser
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: uweigand at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18182

[Bug c++/18182] Incorrect processing of __attribute__ by the C++ parser

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-28 14:29 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |wrong-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-28 14:29:13
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18182

[Bug c++/18182] Incorrect processing of __attribute__ by the C++ parser

[uweigand at gcc dot gnu dot org]

------- Comment #3 from uweigand at gcc dot gnu dot org  2006-07-14 19:27 -------
Yes, looks like this is long fixed.  Closing bug now.


-- 

uweigand at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18182

[Bug c++/18182] Incorrect processing of __attribute__ by the C++ parser

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2005-10-27 16:30 -------
I think this has been fixed as I get an error on i686-pc-linux-gnu with your
non-Pmode pointers expample.  This was on the mainline.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18182