std::bad_alloc

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C++ Standard Library
Utilities library
Dynamic memory management
Low level memory management
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.

Contents

[edit] Member functions

constructs the bad_alloc object
(public member function)
replaces a bad_alloc object
(public member function)
returns explanatory string
(public member function)

Inherited from std::exception

Member functions

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

[edit] 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

[edit] See also

allocation functions
(function)
Retrieved from "http://en.cppreference.com/w/cpp/memory/new/bad_alloc"