22 General utilities library [utilities]

22.6 Variants [variant]

22.6.11 Class bad_variant_access [variant.bad.access]

namespace std { class bad_variant_access : public exception { public: // see [exception] for the specification of the special member functions const char* what() const noexcept override; }; }
Objects of type bad_variant_access are thrown to report invalid accesses to the value of a variant object.
const char* what() const noexcept override;
Returns: An implementation-defined ntbs.