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assert

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< cpp‎ | error

 
 
 
Erreur de manipulation
La gestion des exceptions
Original:
Exception handling
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exception
uncaught_exception
exception_ptr (C++11)
make_exception_ptr (C++11)
current_exception (C++11)
rethrow_exception (C++11)
nested_exception (C++11)
throw_with_nested (C++11)
rethrow_if_nested (C++11)
Défaillances de gestion des exceptions
Original:
Exception handling failures
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terminate
terminate_handler
get_terminate (C++11)
set_terminate
unexpected (obsolète)
bad_exception
unexpected_handler (obsolète)
get_unexpected (C++11) (obsolète)
set_unexpected (obsolète)
Catégories d'exception
Original:
Exception categories
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logic_error
invalid_argument
domain_error
length_error
out_of_range
runtime_error
range_error
overflow_error
underflow_error
Les codes d'erreur
Original:
Error codes
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Les codes d'erreur
errno
Les assertions
Original:
Assertions
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assert
system_error installation
Original:
system_error facility
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error_category (C++11)
generic_category (C++11)
system_category (C++11)
error_condition (C++11)
errc (C++11)
error_code (C++11)
system_error (C++11)
 
Defined in header <cassert>
#ifdef NDEBUG

#define assert(condition) ((void)0)
#else
#define assert(condition) /*implementation defined*/

#endif
La définition de la macro assert dépend d'une autre macro, NDEBUG, qui n'est pas définie par la bibliothèque standard .
Original:
The definition of the macro assert depends on another macro, NDEBUG, which is not defined by the standard library.
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Si NDEBUG est défini comme un nom de macro à l'endroit où le code source est inclus <cassert>, puis assert ne fait rien .
Original:
If NDEBUG is defined as a macro name at the point in the source code where <cassert> is included, then assert does nothing.
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Si NDEBUG n'est pas défini, puis vérifie si son argument assert (qui doit être de type scalaire) égale à zéro. Si c'est le cas, assert sorties spécifiques à l'implémentation des informations de diagnostic sur la sortie d'erreur standard et appelle std::abort. L'information de diagnostic est nécessaire d'inclure le texte de expression, ainsi que les valeurs des macros standard __FILE__, __LINE__, et la variable standard __func__ .
Original:
If NDEBUG is not defined, then assert checks if its argument (which must have scalar type) compares equal to zero. If it does, assert outputs implementation-specific diagnostic information on the standard error output and calls std::abort. The diagnostic information is required to include the text of expression, as well as the values of the standard macros __FILE__, __LINE__, and the standard variable __func__.
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Sommaire

[modifier] Paramètres

condition -
expression de type scalaire
Original:
expression of scalar type
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[modifier] Retourne la valeur

(Aucun)
Original:
(none)
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[modifier] Exemple

#include <iostream>
// uncomment to disable assert()
// #define NDEBUG
#include <cassert>
 
int main()
{
    assert(2+2==4);
    std::cout << "Execution continues past the first assert\n";
    assert(2+2==5);
    std::cout << "Execution continues past the second assert\n";
}

Résultat :

Execution continues past the first assert
test: test.cc:8: int main(): Assertion `2+2==5' failed.
Aborted

[modifier] Voir aussi

l'affirmation statique
effectue la compilation affirmation de vérifier (depuis C++11)
Original:
performs compile-time assertion checking (depuis C++11)
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[edit]
provoque la terminaison anormale du programme (sans nettoyage)
Original:
causes abnormal program termination (without cleaning up)
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(fonction) [edit]