std::bad_alloc

 

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std::bad_alloc

Member functions

bad_alloc::bad_alloc

Inherited from std::exception

exception::~exception

exception::what

 

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

std::bad_alloc is the type of the object thrown as exceptions by the allocation functions to report failure to allocate storage.

Member functions

(constructor)	constructs the bad_alloc object (public member function)
operator=	replaces a bad_alloc object (public member function)
what	returns explanatory string (public member function)

Inherited from std::exception

Member functions

(destructor) [virtual]	destructs the exception object (virtual public member function of std::exception)
what [virtual]	returns explanatory string (virtual public member function of std::exception)

Example

#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

See also

operator new operator new[]	allocation functions (function)