std::bad_alloc – cppreference.com

std::bad_alloc

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std::bad_alloc
Member-Funktionen
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bad_alloc::bad_alloc
Geerbt von std::exception
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Inherited from std::exception
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exception::~exception
exception::what
 
<tbody> </tbody>
definiert in Header <new>
class bad_alloc;

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

Zuordnungsfunktionen
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allocation functions
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to report failure to allocate storage.

cpp/error/exception

Inheritance diagram

Member-Funktionen

 constructs the bad_alloc object
(öffentliche Elementfunktion)
replaces a bad_alloc object
(öffentliche Elementfunktion)
kehrt erklärende String
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returns explanatory string
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(öffentliche Elementfunktion)

Inherited from std::exception

Member functions

[virtuell]
Zerstört das Ausnahme-Objekt
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destructs the exception object
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(virtuellen öffentlichen Member-Funktion of std::exception) [edit]
[virtuell]
gibt einen erläuternden String
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returns an explanatory string
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(virtuellen öffentlichen Member-Funktion of std::exception) [edit]

Beispiel

#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

Siehe auch