[Bug c++/38649] New: [4.4 regression] Trouble with defaulted constructors

[Bug c++/38649] New: [4.4 regression] Trouble with defaulted constructors

[reichelt at gcc dot gnu dot org]

The following invalid code snippets are accepted on mainline:

========================
struct A
{
  A(...) = default;
};
========================

========================
struct A
{
  A(const A&, ...) = default;
};
========================

Apparently defaultable_fn_p in cp/class.c doesn't handle the ellipsis
correctly. This makes me wonder whether type_has_user_nondefault_constructor
which contains similar code has the same problem.


This bug can be exploited to trigger an ICE:

========================
struct A
{
  A(...) = default;
  A(const A&);
};

void foo()
{
  A a;
}
========================

bug.cc: In constructor 'A::A(...)':
bug.cc:3: internal compiler error: Segmentation fault
Please submit a full bug report, [etc.]

This makes the bug a regression as the second code snippet didn't crash
previous compilers.


-- 
           Summary: [4.4 regression] Trouble with defaulted constructors
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, accepts-invalid, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649

[Bug c++/38649] [4.4 regression] Trouble with defaulted constructors

[reichelt at gcc dot gnu dot org]

-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649

[Bug c++/38649] [4.4 regression] Trouble with defaulted constructors

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2008-12-27 23:57 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-12-27 23:57:57
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649

[Bug c++/38649] [4.4 regression] Trouble with defaulted constructors

[paolo dot carlini at oracle dot com]

------- Comment #2 from paolo dot carlini at oracle dot com  2008-12-29 16:17 -------
Maybe Jason is interested...


-- 

paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649

[Bug c++/38649] [4.4 regression] Trouble with defaulted constructors

[jason at gcc dot gnu dot org]

-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2008-12-27 23:57:57         |2008-12-29 21:03:09
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649

[Bug c++/38649] [4.4 regression] Trouble with defaulted constructors

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649

[Bug c++/38649] [4.4 regression] Trouble with defaulted constructors

[jason at gcc dot gnu dot org]

------- Comment #3 from jason at gcc dot gnu dot org  2009-02-11 05:23 -------
Subject: Bug 38649

Author: jason
Date: Wed Feb 11 05:23:38 2009
New Revision: 144092

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=144092
Log:
        PR c++/38649
        * class.c (defaultable_fn_p): Handle ... properly.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/defaulted8.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/class.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649

[Bug c++/38649] [4.4 regression] Trouble with defaulted constructors

[jason at gcc dot gnu dot org]

------- Comment #4 from jason at gcc dot gnu dot org  2009-02-11 05:25 -------
Fixed.


-- 

jason at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38649