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std::bad_alloc

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std::bad_alloc
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bad_alloc::bad_alloc
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Defined in header <new>
class bad_alloc;

std::bad_alloc is the type of the object thrown as exceptions by the <div class="t-tr-text">fonctions d'allocation

</div> to report failure to allocate storage.

cpp/error/exceptionstd-bad alloc-inheritance.svg
À propos de cette image

Inheritance diagram

Sommaire

[modifier] Fonctions membres

constructs the bad_alloc object
(fonction membre publique)
replaces a bad_alloc object
(fonction membre publique)
renvoie une chaîne explicative
Original:
returns explanatory string
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(fonction membre publique)

Inherited from std::exception

Member functions

[
virtuel
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virtual
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]
Détruit l'objet exception
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destructs the exception object
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(function membre virtuelle publique de std::exception) [edit]
[
virtuel
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virtual
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]
retourne une chaîne explicative
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returns an explanatory string
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(function membre virtuelle publique de std::exception) [edit]

[modifier] Exemple

#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';
    }
}

Résultat :

Allocation failed: std::bad_alloc

[modifier] Voir aussi

fonctions d'allocation
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allocation functions
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(fonction) [edit]