[Bug c++/46688] New: [4.6 Regression] g++ requires a function declaration when it should not

[Bug c++/46688] New: [4.6 Regression] g++ requires a function declaration when it should not

[roman at binarylife dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

           Summary: [4.6 Regression] g++ requires a function declaration
                    when it should not
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: roman@binarylife.net


$ cat test.cc 
struct A {
   A(int);
};

struct B {
   B() {}
   A a[];
};
$ g++ test.cc 
test.cc: In constructor 'B::B()':
test.cc:6:8: error: no matching function for call to 'A::A()'
test.cc:2:4: note: candidates are: A::A(int)
test.cc:1:8: note:                 A::A(const A&)

The same problem with A a[0];

v4.5 is perfect in this respect.

[Bug c++/46688] [4.6 Regression] g++ requires a function declaration when it should not

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.11.27 23:30:40
   Target Milestone|---                         |4.6.0
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-27 23:30:40 UTC ---
Confirmed.

[Bug c++/46688] [4.6 Regression] g++ requires a function declaration when it should not

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at redhat dot com

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-28 00:02:57 UTC ---
It is caused by revision 165976:

http://gcc.gnu.org/ml/gcc-cvs/2010-10/msg01163.html

[Bug c++/46688] [4.6 Regression] g++ requires a function declaration when it should not

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1

[Bug c++/46688] [4.6 Regression] g++ requires a function declaration when it should not

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-01-04 18:55:22 UTC ---
Should TYPE_NEEDS_CONSTRUCTING be false for a zero-length/flexible array
member?

[Bug c++/46688] [4.6 Regression] g++ requires a function declaration when it should not

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jason at gcc dot gnu.org

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-01-13 00:02:35 UTC ---
Mine.

[Bug c++/46688] [4.6 Regression] g++ requires a function declaration when it should not

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> 2011-01-14 13:08:06 UTC ---
Author: jason
Date: Fri Jan 14 13:08:02 2011
New Revision: 168782

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168782
Log:
    PR c++/46688
    * tree.c (build_vec_init_expr): Handle flexible array
    properly.

Added:
    trunk/gcc/testsuite/g++.dg/ext/flexary2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/tree.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/46688] [4.6 Regression] g++ requires a function declaration when it should not

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46688

Paolo Carlini <paolo.carlini at oracle dot com> changed:

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

--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-01-14 13:33:11 UTC ---
Fixed.