std::rethrow_exception
De cppreference.com
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<tbody> </tbody>| Definido no cabeçalho <exception>
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[[noreturn]] void rethrow_exception( std::exception_ptr p ) |
(desde C++11) | |
Lança o objeto de exceção anteriormente capturados, referido pelo ponteiro de exceção
p.Original:
Throws the previously captured exception object, referred to by the exception pointer
p.The text has been machine-translated via Google Translate.
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Parâmetros
| p | - | não nulo std::exception_ptr
Original: non-null std::exception_ptr The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Valor de retorno
(Nenhum)
Original:
(none)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Exemplo
#include <iostream>
#include <string>
#include <exception>
#include <stdexcept>
void handle_eptr(std::exception_ptr eptr) // passing by value is ok
{
try {
if (eptr != std::exception_ptr()) {
std::rethrow_exception(eptr);
}
} catch(const std::exception& e) {
std::cout << "Caught exception \"" << e.what() << "\"\n";
}
}
int main()
{
std::exception_ptr eptr;
try {
std::string().at(1); // this generates an std::out_of_range
} catch(...) {
eptr = std::current_exception(); // capture
}
handle_eptr(eptr);
} // destructor for std::out_of_range called here, when the eptr is destructed
Saída:
Caught exception "basic_string::at"