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Showing content from https://cplusplus.com/reference/new/bad_array_new_length/ below:

class

<new>

std::bad_array_new_length

class bad_array_new_length;

Exception on bad array length

Type of the exceptions thrown by array new-expressions in any of these cases:

If the array size is less than zero.
If the array size is greater than an implementation-defined limit.
If the number of elements in the initializer list exceeds the number of elements to initialize.

This class is derived from bad_alloc (which is itself derived from exception). See the exception class for the member definitions of standard exceptions.

Its member what returns a null-terminated character sequence identifying the exception.

Example

// bad_array_new_length example
#include <iostream>     // std::cout
#include <exception>    // std::exception
#include <new>          // std::bad_array_new_length

int main() {
  try {
    int* p = new int[-1];
  } catch (std::bad_array_new_length& e) {
    std::cerr << "bad_array_new_length caught: " << e.what() << '\n';
  } catch (std::exception& e) {   // older compilers may throw other exceptions:
    std::cerr << "some other standard exception caught: " << e.what() << '\n';
  }
}

Possible output:

bad_array_new_length caught: bad array new length

Exception safetyNo-throw guarantee: no members throw exceptions.

See also

bad_alloc: Exception thrown on failure allocating memory (class)

exception: Standard exception class (class)

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