From Jason Turner

[bad.cast]

C++17 → C++20 1.3 KB 26 lines
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Markdown: C++17 | C++20
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tmp/tmpv49hesvl/{from.md → to.md} RENAMED
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  ``` cpp
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  namespace std {
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  class bad_cast : public exception {
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  public:
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- bad_cast() noexcept;
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- bad_cast(const bad_cast&) noexcept;
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- bad_cast& operator=(const bad_cast&) noexcept;
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  const char* what() const noexcept override;
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  };
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  }
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  ```
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  The class `bad_cast` defines the type of objects thrown as exceptions by
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  the implementation to report the execution of an invalid `dynamic_cast`
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- expression ([[expr.dynamic.cast]]).
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-
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- ``` cpp
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- bad_cast() noexcept;
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- ```
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-
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- *Effects:* Constructs an object of class `bad_cast`.
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-
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- ``` cpp
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- bad_cast(const bad_cast&) noexcept;
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- bad_cast& operator=(const bad_cast&) noexcept;
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- ```
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-
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- *Effects:* Copies an object of class `bad_cast`.
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  ``` cpp
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  const char* what() const noexcept override;
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  ```
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  *Returns:* An *implementation-defined* NTBS.
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- *Remarks:* The message may be a null-terminated multibyte
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- string ([[multibyte.strings]]), suitable for conversion and display as
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- a `wstring` ([[string.classes]], [[locale.codecvt]])
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-
 
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  ``` cpp
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  namespace std {
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  class bad_cast : public exception {
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  public:
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+ // see [exception] for the specification of the special member functions
 
 
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  const char* what() const noexcept override;
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  };
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  }
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  ```
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  The class `bad_cast` defines the type of objects thrown as exceptions by
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  the implementation to report the execution of an invalid `dynamic_cast`
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+ expression [[expr.dynamic.cast]].
 
 
 
 
 
 
 
 
 
 
 
 
 
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  ``` cpp
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  const char* what() const noexcept override;
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  ```
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  *Returns:* An *implementation-defined* NTBS.
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