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 constexpr const char* what() const noexcept override; }; }
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Objects of type bad_variant_access are thrown to report invalid accesses to the value of a variant object.
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constexpr const char* what() const noexcept override;
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Returns: An implementation-defined ntbs, which during constant evaluation is encoded with the ordinary literal encoding ([lex.ccon]).

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