[Bug c++/30566] New: -Wshadow warns about clashes between nested function parameters in C++

[Bug c++/30566] New: -Wshadow warns about clashes between nested function parameters in C++

[geoffk at gcc dot gnu dot org]

The following program:

void f( int x )
{
        class InnerClass
        {
                public:
                        static void g( int x )
                        {
                        // empty
                        }
        };
}

produces a warning:

t.cc: In static member function 'static void f(int)::InnerClass::g(int)':
t.cc:7: warning: declaration of 'int x' shadows a parameter
t.cc:1: warning: shadowed declaration is here

But it would be invalid for any function in InnerClass to try and use the outer
"int x" (and in fact if you try it, you correctly get an error).


-- 
           Summary: -Wshadow warns about clashes between nested function
                    parameters in C++
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: geoffk at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30566

[Bug c++/30566] -Wshadow warns about clashes between nested function parameters in C++

[bangerth at dealii dot org]

------- Comment #1 from bangerth at dealii dot org  2007-02-11 03:57 -------
Confirmed.


-- 

bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-02-11 03:57:39
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30566

[Bug c++/30566] -Wshadow warns about clashes between nested function parameters in C++

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2010-05-07 13:57 -------
*** Bug 41825 has been marked as a duplicate of this bug. ***


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |msebor at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30566

[Bug c++/30566] -Wshadow warns about clashes between nested function parameters in C++

[pzhao at gcc dot gnu dot org]

------- Comment #3 from pzhao at gcc dot gnu dot org  2010-05-14 03:19 -------
Subject: Bug 30566

Author: pzhao
Date: Fri May 14 03:19:32 2010
New Revision: 159383

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159383
Log:
gcc/cp/
2010-05-14  Shujing Zhao  <pearly.zhao@oracle.com>

        PR c++/30566
        * name-lookup.c (pushdecl_maybe_friend): Avoid the warnings about
        shadowing the outer parameter or variables by the declaration of
        nested function in nested structure or class. Warn the shadowing by
        the declaration of nested lambda expression.

gcc/testsuite/
2010-05-14  Shujing Zhao  <pearly.zhao@oracle.com>

        PR c++/30566
        * testsuite/g++.dg/warn/Wshadow-4.C: Adjust.
        * testsuite/g++.dg/warn/Wshadow-5.C: New test.
        * testsuite/g++.dg/warn/Wshadow-6.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Wshadow-5.C
    trunk/gcc/testsuite/g++.dg/warn/Wshadow-6.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/name-lookup.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/warn/Wshadow-4.C


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30566

[Bug c++/30566] -Wshadow warns about clashes between nested function parameters in C++

[paolo dot carlini at oracle dot com]

------- Comment #4 from paolo dot carlini at oracle dot com  2010-05-14 09:43 -------
Fixed for 4.6.0.


-- 

paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30566