17 Language support library [support]

17.6 Dynamic memory management [support.dynamic]

17.6.4 Storage allocation errors [alloc.errors]

17.6.4.1 Class bad_alloc [bad.alloc]

namespace std { class bad_alloc : public exception { public: // see [exception] for the specification of the special member functions const char* what() const noexcept override; }; }

The class bad_alloc defines the type of objects thrown as exceptions by the implementation to report a failure to allocate storage.

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const char* what() const noexcept override;

Returns: An implementation-defined ntbs.

17.6.4.2 Class bad_array_new_length [new.badlength]

namespace std { class bad_array_new_length : public bad_alloc { public: // see [exception] for the specification of the special member functions const char* what() const noexcept override; }; }

The class bad_array_new_length defines the type of objects thrown as exceptions by the implementation to report an attempt to allocate an array of size less than zero or greater than an implementation-defined limit ([expr.new]).

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const char* what() const noexcept override;

Returns: An implementation-defined ntbs.

17.6.4.3 Type new_handler [new.handler]

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using new_handler = void (*)();

The type of a handler function to be called by operator new() or operator new[]() ([new.delete]) when they cannot satisfy a request for additional storage.

Required behavior: A new_handler shall perform one of the following:

(2.1)
make more storage available for allocation and then return;
(2.2)
throw an exception of type bad_alloc or a class derived from bad_alloc;
(2.3)
terminate execution of the program without returning to the caller.

17.6.4.4 set_new_handler [set.new.handler]

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new_handler set_new_handler(new_handler new_p) noexcept;

Effects: Establishes the function designated by new_p as the current new_handler.

Returns: The previous new_handler.

Remarks: The initial new_handler is a null pointer.

17.6.4.5 get_new_handler [get.new.handler]

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new_handler get_new_handler() noexcept;

Returns: The current new_handler.

[Note 1:

This can be a null pointer value.

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