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      std::bad_array_new_length

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      < cpp‎ | memory‎ | new

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      std::bad_array_new_length
      Les fonctions membres
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      Member functions
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      bad_array_new_length::bad_array_new_length
      Hérité de std::exception
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      Inherited from std::exception
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      exception::~exception
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      Déclaré dans l'en-tête <new>
      class bad_array_new_length;
      		 (depuis C++11)

      std::bad_array_new_length is the type of the object thrown as exceptions by the nouvelles-expressions to report invalid array lengths if

      1) array length is negative

      2) total size of the new array would exceed implementation-defined maximum value

      3) the number of initializer-clauses exceeds the number of elements to initialize

      Only the first array dimension may generate this exception; dimensions other than the first are constant expressions and are checked at compile time.

      cpp/error/exceptioncpp/memory/new/bad allocstd-bad array new length-inheritance.svg
      À propos de cette image

      Inheritance diagram

      Sommaire

      [modifier]Fonctions membres

      construit l'objet bad_array_new_length
      Original:
      constructs the bad_array_new_length object
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      (fonction membre publique)

      Inherited from std::bad_alloc

      Inherited from std::exception

      Member functions

      [
      virtuel
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      virtual
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      ]
      Détruit l'objet exception
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      destructs the exception object
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      (function membre virtuelle publique de std::exception)[edit]
      [
      virtuel
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      virtual
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      ]
      retourne une chaîne explicative
      Original:
      returns an explanatory string
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      (function membre virtuelle publique de std::exception)[edit]

      [modifier]Notes

      The override for the virtual member function what() may by provided, but is not required.

      [modifier]Exemple

      Three conditions where std::bad_array_new_length should be thrown: 

      #include <iostream>#include <new>#include <climits>   int main(){int negative =-1;int small =1;int large =INT_MAX;try{ new int[negative];// negative size new int[small]{1,2,3};// too many initializers new int[large][1000000];// too large}catch(const std::bad_array_new_length&e){std::cout<< e.what()<<'\n';}}


      [modifier]Voir aussi

      fonctions d'allocation
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      allocation functions
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      (fonction)[edit]
      Exception levée lorsque l'allocation de mémoire échoue
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      exception thrown when memory allocation fails
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      (classe)[edit]
      Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/memory/new/bad_array_new_length&oldid=48700 »
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