From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 62748 invoked by alias); 27 Apr 2015 15:57:27 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 62687 invoked by uid 48); 27 Apr 2015 15:57:23 -0000 From: "danregister at poczta dot fm" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/63540] Erroneous "'Derived' declares a move constructor or move assignment operator" in error. Date: Mon, 27 Apr 2015 15:57:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: 4.9.2 X-Bugzilla-Keywords: rejects-valid X-Bugzilla-Severity: normal X-Bugzilla-Who: danregister at poczta dot fm X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-04/txt/msg02304.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D63540 Daniel Adamski changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |danregister at poczta dot = fm --- Comment #2 from Daniel Adamski --- I have another variant of that issue: ---------------------------------------------------------------- struct Base { Base() {} Base(const Base &) {} Base & operator=3D(Base &&) { return *this; } }; struct D1 : Base { using Base::operator=3D; D1 & operator=3D(const D1&) { return *this; } }; int main() { D1 x; D1 y =3D x; (void) y; } ---------------------------------------------------------------- The error: ---------------------------------------------------------------- test.cpp: In function =E2=80=98int main()=E2=80=99: test.cpp:19:12: error: use of deleted function =E2=80=98D1::D1(const D1&)= =E2=80=99 D1 y =3D x; ^ test.cpp:10:8: note: =E2=80=98D1::D1(const D1&)=E2=80=99 is implicitly decl= ared as deleted because =E2=80=98D1=E2=80=99 declares a move constructor or move assignment= operator struct D1 : Base ---------------------------------------------------------------- It's enough to remove one of the lines (any one) from D1 for the error to go away. Yet another variant: ---------------------------------------------------------------- struct Base { Base() {} Base(const Base &) {} Base & operator=3D(Base &&) { return *this; } }; struct D1 : Base { using Base::operator=3D; }; struct D2 : D1 { D2 & operator=3D(const D2 &) { return *this; } }; int main() { D1 x; D1 y =3D x; (void) y; } ---------------------------------------------------------------- The error is the same. The "operator=3D()" in "D2" doesn't have to be D2's assignment operator. It may some other "operator()", e.g., "operator(int)" = or it may be "using D1::operator=3D;" or "using Base::operator=3D;" >>From gcc-bugs-return-484753-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 27 16:03:46 2015 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 77671 invoked by alias); 27 Apr 2015 16:03:46 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 77627 invoked by uid 48); 27 Apr 2015 16:03:42 -0000 From: "mpolacek at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/65901] no warning or error for va_arg (ap, void) Date: Mon, 27 Apr 2015 16:03:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 6.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: minor X-Bugzilla-Who: mpolacek at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 6.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status cf_reconfirmed_on cc target_milestone everconfirmed Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-04/txt/msg02305.txt.bz2 Content-length: 676 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65901 Marek Polacek changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-04-27 CC| |mpolacek at gcc dot gnu.org Target Milestone|--- |6.0 Ever confirmed|0 |1 --- Comment #1 from Marek Polacek --- We should probably reject such a program. G++/clang reject that as well.