sigfault in destructor

[Pablo Yaggi]

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Hi, I have this backtrace, is it a libstdc++ bug, Am I doing something wrong ? 
it happens when i try to delete an object that has an std::string member.
I'm attaching the source code in case it helps.
thanks,
Pablo


(gdb) backtrace
#0  0x400bab4b in std::basic_streambuf<char, 
std::char_traits<char>>::xsputn(char const*, int) () 
from /usr/lib/libstdc++.so.5

#1  0x40079618 in std::basic_filebuf<char, 
std::char_traits<char>>::xsputn(char const*, int) () 
from /usr/lib/libstdc++.so.5

#2  0x400ba7af in std::basic_streambuf<char, 
std::char_traits<char>>::sputn(char const*, int) () 
from /usr/lib/libstdc++.so.5

#3  0x400aea44 in std::basic_ostream<char, std::char_traits<char> >&
std::operator<< <char, std::char_traits<char>, 
std::allocator<char>>(std::basic_ostream<char, std::char_traits<char> >&, 
std::basic_string<char,

std::char_traits<char>, std::allocator<char> > const&) ()
from /usr/lib/libstdc++.so.5
#4  0x08050559 in ~CAttach (this=0x82efe50)
at /home/pablo/proyectos/lma/cuaderno/src/cclient.cpp:242
#5  0x08050424 in ~CMessage (this=0x82f1d28)
at /home/pablo/proyectos/lma/cuaderno/src/cclient.cpp:232
#6  0x08050153 in CClient::close() (this=0x82ec510)
at /home/pablo/proyectos/lma/cuaderno/src/cclient.cpp:211
#7  0x0804e6a4 in main (argc=3, argv=0xbffff804)
at /home/pablo/proyectos/lma/cuaderno/src/cuaderno.cpp:39
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