Difference between revisions of "cpp/memory/new/bad array new length"

Revision as of 16:01, 2 November 2012

Template:cpp/memory/new/bad array new length/navbar Template:ddcl list begin <tr class="t-dsc-header">

<td></td> <td></td> </tr> <tr class="t-dcl ">

<td class="t-dcl-nopad"> </td> <td > (since C++11) </td> </tr> Template:ddcl list end

std::bad_array_new_length is the type of the object thrown as exceptions by the new-expressions to report invalid array lengths if

1) array length is negative

2) total size of the new array would exceed implementation-defined maximum value

3) the number of initializer-clauses exceeds the number of elements to initialize

Only the first array dimension may generate this exception; dimensions other than the first are constant expressions and are checked at compile time.

Inheritance diagram

Member functions

Notes

The override for the virtual member function what() may by provided, but is not required.

Example

#include <iostream>
#include <new>
#include <climits>
 
int main()
{
    int negative = -1;
    int small = 1;
    int large = INT_MAX;
    try {
        new int[negative];           // negative size
        new int[small]{1,2,3};       // too many initializers
        new int[large][1000000];     // too large
    } catch(const std::bad_array_new_length &e) {
        std::cout << e.what() << '\n';
    }
}

See also