Varianti

    std::bad_alloc

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    < cpp | memory | new

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    <metanoindex/>

     
    C++
     
    Utilità libreria
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    Data e ora
    Funzione oggetti
    initializer_list(C++11)
    bitset
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    Gli operatori relazionali
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    Relational operators
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    rel_ops::operator!=
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    Coppie e tuple
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    pair
    tuple(C++11)
    piecewise_construct_t(C++11)
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    Swap, in avanti e spostare
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    Swap, forward and move
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    swap
    forward(C++11)
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    Gestione della memoria dinamica
    Basso livello di gestione della memoria
    Allocatori
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    Allocators
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    allocator
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    Non inizializzata stoccaggio
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    Uninitialized storage
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    uninitialized_copy
    uninitialized_copy_n(C++11)
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    unique_ptr(C++11)
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    Garbage collection supporto
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    Funzioni
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    Classi
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    bad_alloc
    bad_array_new_length(C++11)
    nothrow_t
    Tipi
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    new_handler
    Oggetti
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    nothrow
     
    std::bad_alloc
    Membri funzioni
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    Member functions
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    bad_alloc::bad_alloc
    Ereditato da std::exception
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    Inherited from std::exception
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    exception::~exception
    exception::what
     
    <tbody> </tbody>
    Elemento definito nell'header <new>
    class bad_alloc;

    std::bad_alloc is the type of the object thrown as exceptions by the

    allocazione funzioni
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    allocation functions
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    to report failure to allocate storage.

    cpp/error/exception

    Inheritance diagram

    Membri funzioni

    		 constructs the bad_alloc object
    (metodo pubblico)
    		replaces a bad_alloc object
    (metodo pubblico)
    restituisce stringa esplicativa
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    returns explanatory string
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    (metodo pubblico)

    Inherited from std::exception

    Member functions

    [virtuale]
    distrugge l'oggetto eccezione
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    destructs the exception object
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    (metodo pubblico virtuale) [modifica]
    [virtuale]
    restituisce una stringa esplicativa
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    returns an explanatory string
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    (metodo pubblico virtuale) [modifica]

    Esempio

    #include <iostream>
#include <new>

int main()
{
    try {
        while (true) {
            new int[100000000ul];
        }
    } catch (const std::bad_alloc& e) {
        std::cout << "Allocation failed: " << e.what() << '\n';
    }
}

    Output: 

    Allocation failed: std::bad_alloc

    Vedi anche
    allocazione funzioni
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    allocation functions
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    (funzione) [modifica]