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; }; }
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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;
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Returns: An implementation-defined ntbs.