Hello!   I am using boost regexp to do string/expression match. I got several dump files that have the same call stack when the crash happends. What my code does  is copying user buffer (containing string to be mached) to an internal allocated buffer and then call boost regexp functions. From the dmp files, I can tell that register EBP is corrupted in the function boost::re_detail::abstract_protected_call::execute. Before this function, the value of EBP value is correct. Any idea what the cause is? Is there any similar problem that has been known already? Here is the callstack when crash happened. ============================================================================== 

 00000000()    nlca_framework.dll!boost::re_detail::perl_matcher<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >::match_all_states()  + 0x9a bytes C++   nlca_framework.dll!boost::re_detail::perl_matcher<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >::match_startmark()  + 0x194 bytes C++   nlca_framework.dll!boost::re_detail::perl_matcher<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >::match_all_states()  + 0x9a bytes C++   nlca_framework.dll!boost::re_detail::perl_matcher<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >::match_prefix()  + 0x39 bytes C++   nlca_framework.dll!boost::re_detail::perl_matcher<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >::find_restart_any()  + 0xe0 bytes C++   nlca_framework.dll!boost::re_detail::abstract_protected_call::execute()  + 0x41 bytes C++   nlca_framework.dll!boost::re_detail::perl_matcher<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >::protected_call()  + 0x48 bytes C++   nlca_framework.dll!boost::re_detail::perl_matcher<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >::find()  + 0xa bytes C++   nlca_framework.dll!boost::regex_search<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >,std::allocator<boost::sub_match<std::_String_const_iterator<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > > >,wchar_t,boost::regex_traits<wchar_t,boost::w32_regex_traits<wchar_t> > >()  + 0xac bytes C++ Heidi