std::bad_array_new_length
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<tbody> </tbody>| Elemento definito nell'header <new>
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class bad_array_new_length; |
(dal C++11) | |
std::bad_array_new_length is the type of the object thrown as exceptions by the nuove-espressioni to report invalid array lengths if
1) array length is negative
2) total size of the new array would exceed implementation-defined maximum value
3) the number of initializer-clauses exceeds the number of elements to initialize
Only the first array dimension may generate this exception; dimensions other than the first are constant expressions and are checked at compile time.
Inheritance diagram
Membri funzioni
costruisce l'oggetto bad_array_new_lengthOriginal: constructs the bad_array_new_length objectThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) | |
Inherited from std::bad_alloc
Inherited from std::exception
Member functions
[virtuale] |
distrugge l'oggetto eccezione Original: destructs the exception object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico virtuale) |
[virtuale] |
restituisce una stringa esplicativa Original: returns an explanatory string The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico virtuale) |
Note
The override for the virtual member function what() may by provided, but is not required.
Esempio
Three conditions where std::bad_array_new_length should be thrown:
#include <iostream>
#include <new>
#include <climits>
int main()
{
int negative = -1;
int small = 1;
int large = INT_MAX;
try {
new int[negative]; // negative size
new int[small]{1,2,3}; // too many initializers
new int[large][1000000]; // too large
} catch(const std::bad_array_new_length &e) {
std::cout << e.what() << '\n';
}
}
Vedi anche
allocazione funzioni Original: allocation functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione) | |
Eccezione generata quando allocazione memoria fallisce Original: exception thrown when memory allocation fails The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe) | |