[Bug c++/30763] New: problem with bit-fields assignment

[Bug c++/30763] New: problem with bit-fields assignment

[vovanec at gmail dot com]

Test case:
#include <stdio.h>

#define INT_INVALID -1

class Test
{
  int b : 16;
  int a;
  int c : 16;

public:
  Test()
  {
        b = a = c = INT_INVALID;
        //a = b = c = INT_INVALID;
  }

  void dump()const
  {
        printf("a: %d\tb: %d\tc: %d\n",a,b,c);
  }
};

int main()
{
    Test a;
    a.dump();
    return 0;
}
----------------------------
g++-4.1 main.cpp
./a.out
a: 65535        b: -1   c: -1

g++-4.0 main.cpp
a: -1   b: -1   c: -1

It seems like regression in GCC-4.1.1 and 4.1.2(on GCC-4.1.0 and earlier 
I've got correct results)


-- 
           Summary: problem with bit-fields assignment
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: vovanec at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30763

[Bug c++/30763] problem with bit-fields assignment

[vovanec at gmail dot com]

------- Comment #1 from vovanec at gmail dot com  2007-02-11 13:20 -------
When order of assignment has changed (a = b = c = INT_INVALID;) 
test case returns correct values.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30763

[Bug c++/30763] problem with bit-fields assignment

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   GCC host triplet|linux-i386                  |
           Keywords|                            |wrong-code
      Known to work|                            |4.1.0
   Target Milestone|---                         |4.1.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30763

[Bug c++/30763] problem with bit-fields assignment

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2007-02-11 18:20 -------
Confirmed, but I remember seeing this elsewhere so it must be a dup.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-02-11 18:20:58
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30763

[Bug c++/30763] problem with bit-fields assignment

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2007-02-11 18:27 -------
This works for me in 4.3.0:
.[pinskia-laptop:gcc/objdir-noboot/gcc] pinskia% ./a.out
a: -1   b: -1   c: -1


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|4.1.0                       |4.3.0
   Target Milestone|4.1.2                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30763

[Bug c++/30763] [4.1 Regression] problem with bit-fields assignment

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2007-12-11 13:50 -------
And 4.2.2 and 4.0.4.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.1.2
      Known to work|4.3.0                       |4.0.4 4.2.2 4.3.0
            Summary|problem with bit-fields     |[4.1 Regression] problem
                   |assignment                  |with bit-fields assignment
   Target Milestone|---                         |4.1.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30763

[Bug c++/30763] [4.1 Regression] problem with bit-fields assignment

[jsm28 at gcc dot gnu dot org]

------- Comment #5 from jsm28 at gcc dot gnu dot org  2008-07-04 15:57 -------
Closing 4.1 branch.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
      Known to fail|4.1.2                       |4.1.2 4.1.3
         Resolution|                            |FIXED
   Target Milestone|4.1.3                       |4.2.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30763