[Bug c++/41421] New: [C++0x] Trivial types should require trivial default constructor.

[Bug c++/41421] New: [C++0x] Trivial types should require trivial default constructor.

[cadaker at gmail dot com]

The C++0x standard draft defines a trivial type as one that has trivial default
construct, copy constructor, copy assignment operator and destructor. g++ from
the current trunk, however, classifies types without default constructor as
trivial, meaning that the following code does not compile:

    #include <type_traits>

    struct Foo {
        Foo(int) {}
    };

    static_assert(!std::is_trivial<Foo>::value,
                  "Not trivial - no (trivial) default constructor.");


This seems like a bug (unless I've misunderstood the draft or missed some
pending change to it).


-- 
           Summary: [C++0x] Trivial types should require trivial default
                    constructor.
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cadaker at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41421

[Bug c++/41421] [C++0x] Trivial types should require trivial default constructor.

[paolo dot carlini at oracle dot com]

------- Comment #1 from paolo dot carlini at oracle dot com  2009-09-20 19:11 -------
Jason, can you have a look to this issue? I believe submitter is right. Should
we use TYPE_HAS_TRIVIAL_DFLT instead? Note sure about
TYPE_HAS_TRIVIAL_INIT_REF, TYPE_HAS_TRIVIAL_ASSIGN_REF, and
TYPE_HAS_TRIVIAL_DESTRUCTOR. Humm, maybe just "reversing" the logic in
trivial_type_p is enough?!?


-- 

paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |paolo dot carlini at oracle
                   |                            |dot com, jason at gcc dot
                   |                            |gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41421

[Bug c++/41421] [C++0x] Trivial types should require trivial default constructor.

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2009-09-21 16:11 -------
Subject: Bug 41421

Author: jason
Date: Mon Sep 21 16:11:26 2009
New Revision: 151932

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151932
Log:
        PR c++/41421
        * tree.c (trivial_type_p): Fix logic.

Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/tree.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/trivial1.C


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41421

[Bug c++/41421] [C++0x] Trivial types should require trivial default constructor.

[jason at gcc dot gnu dot org]

------- Comment #3 from jason at gcc dot gnu dot org  2009-09-21 16:30 -------
Fixed, thanks.


-- 

jason at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41421