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-Wcast-qual broken(?) for libstdc++
- From: Gerald Pfeifer <pfeifer at dbai dot tuwien dot ac dot at>
- To: Mark Mitchell <mark at codesourcery dot com>
- Cc: gcc at gcc dot gnu dot org, libstdc++ at gcc dot gnu dot org
- Date: Tue, 8 Jul 2003 11:29:58 +0200 (CEST)
- Subject: -Wcast-qual broken(?) for libstdc++
Mark, might this be a result of your recent parser changes? (And if so,
is this a problem with these changes, or did they just uncover a latent
problem in libstdc++?)
If not, it's a recently introduced libstdc++ problem.
The following simple program
#include <set>
using namespace std;
set<unsigned,less<unsigned> > V;
now generates warnings when compiled with gccvs -Wcast-qual (mainline,
about an hour ago):
/sw/freebsd4/gcc-current/include/c++/3.4/bits/stl_tree.h: In
member function `std::_Rb_tree_node<_Val>* std::_Rb_tree<_Key, _Val,
_KeyOfValue, _Compare, _Alloc>::_M_end() const [with _Key = unsigned int,
_Val = unsigned int, _KeyOfValue = std::_Identity<unsigned int>, _Compare =
std::less<unsigned int>, _Alloc = std::allocator<unsigned int>]':
/sw/freebsd4/gcc-current/include/c++/3.4/bits/stl_tree.h:760: instantiated from `void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_empty_initialize() [with _Key = unsigned int, _Val = unsigned int, _KeyOfValue = std::_Identity<unsigned int>, _Compare = std::less<unsigned int>, _Alloc = std::allocator<unsigned int>]'
/sw/freebsd4/gcc-current/include/c++/3.4/bits/stl_tree.h:731: instantiated from `std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_Rb_tree(const _Compare&, const typename std::_Rb_tree_base<_Val, _Alloc>::allocator_type&) [with _Key = unsigned int, _Val = unsigned int, _KeyOfValue = std::_Identity<unsigned int>, _Compare = std::less<unsigned int>, _Alloc = std::allocator<unsigned int>]'
/sw/freebsd4/gcc-current/include/c++/3.4/bits/stl_set.h:116: instantiated from `std::set<_Key, _Compare, _Alloc>::set() [with _Key = unsigned int, _Compare = std::less<unsigned int>, _Alloc = std::allocator<unsigned int>]'
x.cc:5: instantiated from here
/sw/freebsd4/gcc-current/include/c++/3.4/bits/stl_tree.h:658: warning: cast
from `const std::_Rb_tree_node_base*' to `std::_Rb_tree_node<unsigned int>*'
discards qualifiers from pointer target type
Gerald