[Bug c++/42105] New: class with operator& failed to be stored in the STL map

["evgeny at mainsoft dot com" <gcc-bugzilla at gcc dot gnu dot org>]

OS version: Red Hat Enterprise Linux AS release 4 (Nahant Update 5)
gcc version: g++ (GCC) 4.1.2
gcc command: gcc -c xx.cpp

Source file:

----------------------------------------------
#include <map>
#include <set>

class test
{
public:

        test() { }
        int** operator&() { return (int**)0; }
        operator int*() const { return (int*)0; }
};

void foo()
{
        test s;
        std::map< unsigned int, std::set<test> > m;
        m[0].insert( s );
}

----------------------------------------------

Compiler output:

/usr/local/gnu/gcc/4.1.2/bin/g++ -v -save-temps -c xx.cpp
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.1.2/configure --prefix=/usr/local/gnu/gcc/4.1.2
--enable-languages=c,c++
Thread model: posix
gcc version 4.1.2
 /usr/local/gnu/gcc/4.1.2/libexec/gcc/i686-pc-linux-gnu/4.1.2/cc1plus -E -quiet
-v -D_GNU_SOURCE xx.cpp -mtune=pentiumpro -fpch-preprocess -o xx.ii
ignoring nonexistent directory
"/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:

/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2

/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/i686-pc-linux-gnu

/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/backward
 /usr/local/include
 /usr/local/gnu/gcc/4.1.2/include
 /usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/include
 /usr/include
End of search list.
 /usr/local/gnu/gcc/4.1.2/libexec/gcc/i686-pc-linux-gnu/4.1.2/cc1plus
-fpreprocessed xx.ii -quiet -dumpbase xx.cpp -mtune=pentiumpro -auxbase xx
-version -o xx.s
GNU C++ version 4.1.2 (i686-pc-linux-gnu)
        compiled by GNU C version 4.1.2.
GGC heuristics: --param ggc-min-expand=99 --param ggc-min-heapsize=129323
Compiler executable checksum: edf0d2731cb64fda3dd46c0e3997ac20
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:
In member function 'void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare,
_Alloc>::destroy_node(std::_Rb_tree_node<_Val>*) [with _Key = test, _Val =
test, _KeyOfValue = std::_Identity<test>, _Compare = std::less<test>, _Alloc =
std::allocator<test>]':
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:1266:
  instantiated from 'void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare,
_Alloc>::_M_erase(std::_Rb_tree_node<_Val>*) [with _Key = test, _Val = test,
_KeyOfValue = std::_Identity<test>, _Compare = std::less<test>, _Alloc =
std::allocator<test>]'
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:578:
  instantiated from 'std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare,
_Alloc>::~_Rb_tree() [with _Key = test, _Val = test, _KeyOfValue =
std::_Identity<test>, _Compare = std::less<test>, _Alloc =
std::allocator<test>]'
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_set.h:108:
  instantiated from '_Tp& std::map<_Key, _Tp, _Compare,
_Alloc>::operator[](const _Key&) [with _Key = unsigned int, _Tp =
std::set<test, std::less<test>, std::allocator<test> >, _Compare =
std::less<unsigned int>, _Alloc = std::allocator<std::pair<const unsigned int,
std::set<test, std::less<test>, std::allocator<test> > > >]'
xx.cpp:17:   instantiated from here
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:391:
error: no matching function for call to 'std::allocator<test>::destroy(int**)'
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/ext/new_allocator.h:107:
note: candidates are: void __gnu_cxx::new_allocator<_Tp>::destroy(_Tp*) [with
_Tp = test]
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:
In member function 'std::_Rb_tree_node<_Val>* std::_Rb_tree<_Key, _Val,
_KeyOfValue, _Compare, _Alloc>::_M_create_node(const _Val&) [with _Key = test,
_Val = test, _KeyOfValue = std::_Identity<test>, _Compare = std::less<test>,
_Alloc = std::allocator<test>]':
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:819:
  instantiated from 'typename std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare,
_Alloc>::iterator std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare,
_Alloc>::_M_insert(std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, const
_Val&) [with _Key = test, _Val = test, _KeyOfValue = std::_Identity<test>,
_Compare = std::less<test>, _Alloc = std::allocator<test>]'
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:927:
  instantiated from 'std::pair<typename std::_Rb_tree<_Key, _Val, _KeyOfValue,
_Compare, _Alloc>::iterator, bool> std::_Rb_tree<_Key, _Val, _KeyOfValue,
_Compare, _Alloc>::insert_unique(const _Val&) [with _Key = test, _Val = test,
_KeyOfValue = std::_Identity<test>, _Compare = std::less<test>, _Alloc =
std::allocator<test>]'
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_set.h:321:
  instantiated from 'std::pair<typename std::_Rb_tree<_Key, _Key,
std::_Identity<_Key>, _Compare, typename
_Alloc::rebind<_Key>::other>::const_iterator, bool> std::set<_Key, _Compare,
_Alloc>::insert(const _Key&) [with _Key = test, _Compare = std::less<test>,
_Alloc = std::allocator<test>]'
xx.cpp:17:   instantiated from here
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:369:
error: no matching function for call to 'std::allocator<test>::construct(int**,
const test&)'
/usr/local/gnu/gcc/4.1.2/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../include/c++/4.1.2/ext/new_allocator.h:103:
note: candidates are: void __gnu_cxx::new_allocator<_Tp>::construct(_Tp*, const
_Tp&) [with _Tp = test]

----------------------------------------------


-- 
           Summary: class with operator& failed to be stored in the STL map
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: evgeny at mainsoft dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42105