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[edit]
Defined in header
class bad_alloc;
std::bad_alloc is the type of the object thrown as exceptions by the allocation functions to report failure to allocate storage. 
Inheritance diagram Contents 1 Member functions 2 std::bad_alloc::bad_alloc 2.1 Parameters 3 std::bad_alloc::operator= 3.1 Parameters 3.2 Return value 4 std::bad_alloc::what 4.1 Parameters 4.2 Return value 4.3 Notes 5 Inherited from std::exception 5.1 Member functions 5.2 Example 5.3 See also [edit] Member functions (constructor) constructs a new bad_alloc object (public member function) operator= replaces the bad_alloc object (public member function) what returns the explanatory string (public member function) std::bad_alloc::bad_alloc (1) bad_alloc() throw(); (until C++11) bad_alloc() noexcept; (since C++11) (2) bad_alloc( const bad_alloc& other ) throw(); (until C++11) bad_alloc( const bad_alloc& other ) noexcept; (since C++11)Constructs a new bad_alloc object with an implementation-defined null-terminated byte string which is accessible through what(). 1) Default constructor. 2) Copy constructor. If *this and other both have dynamic type std::bad_alloc then std::strcmp(what(), other.what()) == 0. (since C++11) Parameters other - another exception object to copy std::bad_alloc::operator= bad_alloc& operator=( const bad_alloc& other ) throw(); (until C++11) bad_alloc& operator=( const bad_alloc& other ) noexcept; (since C++11)Assigns the contents with those of other. If *this and other both have dynamic type std::bad_alloc then std::strcmp(what(), other.what()) == 0 after assignment. (since C++11) Parameters other - another exception object to assign with Return value*this std::bad_alloc::what virtual const char* what() const throw(); (until C++11) virtual const char* what() const noexcept; (since C++11)Returns the explanatory string. Parameters(none) Return valuePointer to a null-terminated string with explanatory information. The string is suitable for conversion and display as a std::wstring. The pointer is guaranteed to be valid at least until the exception object from which it is obtained is destroyed, or until a non-const member function (e.g. copy assignment operator) on the exception object is called. NotesImplementations are allowed but not required to override what(). Inherited from std::exception Member functions (destructor)[virtual] destroys the exception object (virtual public member function of std::exception) [edit] what[virtual] returns an explanatory string (virtual public member function of std::exception) [edit] [edit] Example Run this code #include #include int main() { try { while (true) { new int[100000000ul]; } } catch (const std::bad_alloc& e) { std::cout |
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