Defined in header <new> | ||
---|---|---|
class bad_array_new_length; | (since C++11) |
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.
constructs the bad_array_new_length object (public member function) |
[virtual] | destroys the exception object (virtual public member function of std::exception ) |
[virtual] | returns an explanatory string (virtual public member function of std::exception ) |
The override for the virtual member function what()
may by provided, but is not required.
Three conditions where std::bad_array_new_length
should be thrown:
#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'; } }
allocation functions (function) |
|
exception thrown when memory allocation fails (class) |
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