[Boost-users] Crash when assign value to regex object

From: Aaron (yilu_at_[hidden])
Date: 2005-10-11 03:35:29

The code snippet:

struct  Grepper
{
    int             nPriority;              
    boost::regex    re;
    pONGREPFOUNDCALLBACK pOnGrepFoundSymbols;
    
    friend bool operator< (const Grepper& g1, const Grepper& g2)
    {
        return g1.nPriority > g2.nPriority;
    }    
};

    if (...){
        Grepper gp;
        if (QueryGreppers(gp))
            g_vecGreppers.push_back(gp);
    }

bool QueryGreppers(Grepper& gp)
{
    gp.nPriority = 1;
    gp.re ="\\s*#define\\s+([^\\s]+)\\s+([^/\\r\\n]+)([^\\r\\n]*)";
    gp.pOnGrepFoundSymbols = OnGrepSingleLineSymbols;

    return true;
}

Program fails at gp.re = ... 

The call stack is:
_CrtIsValidHeapPointer(const void * 0x012e61f8) line 1606
_free_dbg_lk(void * 0x012e61f8, int 1) line 1011 + 9 bytes
_free_dbg(void * 0x012e61f8, int 1) line 970 + 13 bytes
free(void * 0x012e61f8) line 926 + 11 bytes
operator delete(void * 0x012e61f8) line 7 + 9 bytes
boost::detail::simple_alloc::deallocate(void * 0x012e61f8, unsigned
int 1024) line 213 + 9 bytes
boost::detail::allocator_adapter<unsigned
char,boost::detail::simple_alloc>::deallocate(unsigned char *
0x012e61f8, unsigned int 1024) line 258
boost::re_detail::raw_storage<boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::resize(boost::re_detail::raw_storage<boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
> * const 0x0012eff0, unsigned int 1120) line 223
boost::re_detail::raw_storage<boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::extend(boost::re_detail::raw_storage<boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
> * const 0x0012eff0, unsigned int 268) line 131 + 27 bytes
boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::compile_set_aux(boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
> * const 0x0012efe8, ...) line 1145 + 17 bytes
boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::compile_set_simple(boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
> * const 0x0012efe8, boost::re_detail::re_syntax_base * 0x012e6534,
unsigned long 8, unsigned char 0) line 737 + 48 bytes
boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::set_expression(boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
> * const 0x0012efe8, const char * 0x0846601c `string', const char *
0x08466049, unsigned int 34055) line 1651 + 20 bytes
boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::set_expression(boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
> * const 0x0012efe8, const char * 0x0846601c `string', unsigned int
34055) line 238 + 59 bytes
boost::reg_expression<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::assign(const char * 0x0846601c `string', unsigned int 33031) line
89 + 20 bytes
boost::basic_regex<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
>::operator=(boost::basic_regex<char,boost::regex_traits<char>,boost::detail::allocator_adapter<char,boost::detail::simple_alloc>
> * const 0x0012efe8, const char * 0x0846601c `string') line 356
QueryGreppers(Grepper & {...}) line 35 + 17 bytes

What's wrong with it?