[Bug c++/55972] New: cannot access private member from lambda used in NSDMI

[Bug c++/55972] New: cannot access private member from lambda used in NSDMI

[jens.maurer at gmx dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55972

             Bug #: 55972
           Summary: cannot access private member from lambda used in NSDMI
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jens.maurer@gmx.net


The following short translation unit shows the issue:

class C
{
  void f();
  int j = 10;
  int i =  [this]() { return this->j; }();
};

$ g++ -std=c++11 x.cc 
x.cc: In lambda function:
x.cc:4:11: error: ‘int C::j’ is private
x.cc:5:39: error: within this context


Non-static data member initializers (and lambdas used therein) should be able
to access private members of their class.

[Bug c++/55972] cannot access private member from lambda used in NSDMI

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55972

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-01-14
     Ever Confirmed|0                           |1
      Known to fail|                            |4.7.2, 4.8.0

[Bug c++/55972] cannot access private member from lambda used in NSDMI

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55972

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

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

[Bug c++/55972] cannot access private member from lambda used in NSDMI

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55972

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-17 02:39:03 UTC ---
Author: jason
Date: Sun Mar 17 02:38:50 2013
New Revision: 196742

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196742
Log:
    PR c++/54764
    PR c++/55972
    * name-lookup.h (tag_scope): Add ts_lambda.
    * semantics.c (begin_lambda_type): Use it.
    * decl.c (xref_tag_1): Set CLASSTYPE_LAMBDA_EXPR.
    * pt.c (check_default_tmpl_args): Ignore lambdas.
    (push_template_decl_real): Handle lambdas.
    * tree.c (no_linkage_check): Adjust lambda check.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-defarg4.C
    trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-nsdmi3.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/name-lookup.h
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/semantics.c
    trunk/gcc/cp/tree.c

[Bug c++/55972] cannot access private member from lambda used in NSDMI

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55972

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.8.1

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-23 19:20:42 UTC ---
Fixed for 4.8.1.