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exception specification

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Lenguaje C++
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Control de flujo
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Sentencias condicionales ejecución
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declaración de la función
lambda declaración de la función
función de plantilla
especificador inline
especificaciones de excepción (obsoleto)
noexcept especificador (C++11)
Excepciones
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Exceptions
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Los espacios de nombres
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Namespaces
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Tipos
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Types
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decltype specifier (C++11)
Los especificadores
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Specifiers
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cv especificadores
almacenamiento duración especificadores
constexpr especificador (C++11)
auto especificador (C++11)
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Inicialización
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Initialization
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Utilidades
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Types
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Clases
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Clase propiedades específicas de la función
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Funciones especiales miembro
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Special member functions
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Plantillas
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clase de plantilla
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Varios
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Miscellaneous
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Montaje en línea
 
Enumera las excepciones que una función puede lanzar directamente o indirectamente .
Original:
Lists the exceptions that a function might directly or indirectly throw.
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Contenido

[editar] Sintaxis

throw(typeid, typeid, ...) (obsoleto)

[editar] Explicación

Si una función se declara con T tipo indicado en su especificación de excepciones, la función puede lanzar excepciones de ese tipo o un tipo derivado de ella .
Original:
If a function is declared with type T listed in its exception specification, the function may throw exceptions of that type or a type derived from it.
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Si la función lanza una excepción del tipo que no figuran en su especificación de excepción, el std::unexpected función es llamada. La función predeterminada llama std::terminate, pero puede ser sustituido por una función proporcionada por el usuario (a través de std::set_unexpected), que pueden poner std::terminate o una excepción. Si la excepción lanzada desde std::unexpected es aceptado por la especificación de excepciones, desenredo de pila continúa como de costumbre. Si no lo es, pero std::bad_exception está permitido por la especificación de excepción, std::bad_exception es lanzada. De lo contrario, std::terminate se llama .
Original:
If the function throws an exception of the type not listed in its exception specification, the function std::unexpected is called. The default function calls std::terminate, but it may be replaced by a user-provided function (via std::set_unexpected) which may call std::terminate or throw an exception. If the exception thrown from std::unexpected is accepted by the exception specification, stack unwinding continues as usual. If it isn't, but std::bad_exception is allowed by the exception specification, std::bad_exception is thrown. Otherwise, std::terminate is called.
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[editar] Ejemplo

class X {};
class Y {};
class Z : public X {};
class W {};
 
void f() throw(X, Y) 
{
    int n = 0;
    if (n) throw X(); // OK
    if (n) throw Z(); // also OK
    throw W(); // will call std::unexpected()
}


[editar] Ver también