[Bug libstdc++/14245] New: problem with user-defined allocators in std::basic_string

[cbotev at yahoo dot com]

GCC/libstdc++ 3.3.3-0pre3
Debian Linux Testing("Sarge")

It looks like the STL implementation of libstdc++ 3.3.3.0pre3 assumes that the 
user-defined allocators (at least for basic_string) should be initialized using
the default constructor. 

In particular, the copy constructor for the string representation (struct _Rep)
for basic_string uses the default constructor of the
allocator(basic_string.tcc:192). I think this is wrong: the allocator may need
additional info for proper initialization. It is also unnecessary. Simply using
the copy constructor should be enough.

I think the new line should look something like:

   : _M_dataplus(__str._M_rep()->_M_grab(_Alloc(__str.get_allocator()),
__str.get_allocator()),


Cheers,
Chavdar

-- 
           Summary: problem with user-defined allocators in
                    std::basic_string
           Product: gcc
           Version: 3.3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cbotev at yahoo dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14245