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Description of problem:
When I use the -Wshadow option, some standard header files produce warnings.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. compile the file below

#include <math.h>
#include <string>
#include <hash_map>


Actual Results:  [wtcorrea@neon17 wtcorrea]$ g++ -Wall -Wshadow -c x.cpp 
In file included from /usr/include/g++-3/string:6,
                 from x.cpp:2:
/usr/include/g++-3/std/bastring.h: In method `basic_string<charT, 
traits, Allocator> &basic_string<charT, traits, Allocator>::replace 
(charT *, charT *, InputIterator, InputIterator)':
/usr/include/g++-3/std/bastring.h:442: warning: declaration of `j1' shadows
global declaration
In file included from /usr/include/g++-3/hash_map:31,
                 from x.cpp:3:
/usr/include/g++-3/stl_hashtable.h: In method `void hashtable<_Val, 
_Key, _HashFcn, _ExtractKey, _EqualKey, _Alloc>::_M_copy_from (const 
hashtable<_Val, _Key, _HashFcn, _ExtractKey, _EqualKey, _Alloc> &)':
/usr/include/g++-3/stl_hashtable.h:1017: warning: declaration of `__copy'
shadows global declaration


Expected Results:  I would expect the standard headers to be warning free.


Additional info:

gcc-2.96-108.7.2