[Bug c++/41825] New: useless -Wshadow warning on function argument in local class

[Bug c++/41825] New: useless -Wshadow warning on function argument in local class

[msebor at gmail dot com]

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The warning on the code below isn't useful since the formal argument of foo()
named i cannot be referenced in the body of the local struct. I.e., there is
no potential for referring to it by mistake since doing so would be a hard
error.

$ cat t.cpp && g++ -c -Wshadow t.cpp
int foo (int i)
{
    struct {
        int bar (int i) { return i; }
    } s;

    return s.bar (i);
};
t.cpp: In member function ‘int foo(int)::<anonymous struct>::bar(int)’:
t.cpp:4: warning: declaration of ‘int i’ shadows a parameter
t.cpp:1: warning: shadowed declaration is here


-- 
           Summary: useless -Wshadow warning on function argument in local
                    class
           Product: gcc
           Version: 4.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: msebor at gmail dot com
 GCC build triplet: all
  GCC host triplet: all
GCC target triplet: all


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41825

[Bug c++/41825] useless -Wshadow warning on function argument in local class

[bangerth at gmail dot com]

------- Comment #1 from bangerth at gmail dot com  2009-10-26 04:52 -------
Confirmed. Though I'd note that if this was a *nested* function (not a function
in a *nested structure*) -- or a lambda function--, then the warning would make
sense.


-- 

bangerth at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bangerth at gmail dot com
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-10-26 04:52:41
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41825

[Bug c++/41825] useless -Wshadow warning on function argument in local class

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2010-05-07 13:57 -------


*** This bug has been marked as a duplicate of 30566 ***


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41825