Re: std::string and gcc problem ?
daroman@gmx.net wrote:
int main(int argc, char **argv)
argc, argv are never used
{
array<std::string> a(10);
a[0] = "Huhuhu"; <--- with gcc i got a crash !
comment sign // lost
std::string = a[0];
error assignment to type
std::string tmp= a[0];
return 0;
}
template <typename T>
class array {
public:
array(size_t ) throw(std::bad_alloc &);
array(const array<T> & ) throw(std::bad_alloc &);
extra <T> for "array<T> &"
array(const array& ) throw(std::bad_alloc &);
assignment operator lost
array& operator=(const array& ) throw(std::bad_alloc &);
template <typename T>
array<T>::array(size_t e) throw(std::bad_alloc & )
{
data = NULL; size = 0;
data = new T[e];
size = e;
}
assignment instead of initialization,
extra assignment to data, size
template <typename T>
array<T>::array(size_t e) throw(std::bad_alloc & )
:data( e? new T[e]: 0),
size(e)
{}
template <typename T>
array<T>::~array()
{
if(data != NULL)
rare needed, here extra comparsion with "data"
delete [] data;
data = NULL;
rare needed, here extra assignment to "data"
size = 0;
more rare needed, here extra assignment to "size"
}
template <typename T>
const T& array<T>::operator[](size_t idx) const
throw(std::out_of_range &)
{
if(idx > size) {
if(idx >= size) {
assuming idx, size unsigned
size is 1..N or empty
idx is 0..size-1 or overflow
std::stringstream error;
error << "idx > size " << __FILE__ << "(" << __FUNCTION__ << ":" <<
__LINE__ << ")";
#ifdef _DEBUG
std::cerr << error.c_str() << std::endl;
#endif
throw std::out_of_range(error.str());
}
return data[idx];
}
template <typename T>
T& array<T>::operator[](size_t idx) throw(std::out_of_range &)
{
if(idx > size) {
if(idx >= size) {
std::stringstream error;
error << "idx > size " << __FILE__ << "(" << __FUNCTION__ << ":" <<
__LINE__ << ")";
#ifdef _DEBUG
std::cerr << error.str().c_str() << std::endl;
#endif
throw std::out_of_range(error.str());
}
return data[idx];
}
***********
a[0] = "Huhuhu"; //<--- with gcc i got a crash !
std::string::assign(...
/**
* The data is copied,
so must not be errors here
--
Maksim A. Polyanin
http://grizlyk1.narod.ru/cpp_new
"In thi world of fairy tales rolls are liked olso"
/Gnume/