Std::Ifstream file("test.bin", std::ios::binary | std::ios::ate); std::streamsize size = file.tellg();

Question

Std::Ifstream file("test.bin", std::ios::binary | std::ios::ate); std::streamsize size = file.tellg();

file.seekg(0, std::ios::beg);
std::vector<uint8_t> buffer(size);
file.read(reinterpret_cast<char*>(buffer.data()), size);
if (!file.fail()) {
throw std::runtime_error("cant read file");
}
std::cout << "I can read file";
Есть такой код, почему он кидает bad_alloc error, если файла нету?
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
fish: './a.out' terminated by signal SIGABRT (Abort)

#c++ #embedded #programming #russian

0

18.07.2019

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Anatoly Shirokov · Accepted Answer

Anatoly Shirokov

The current position of the get pointer on success, pos_type(-1) on failure

0

18.07.2019

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Std::Ifstream file("test.bin", std::ios::binary | std::ios::ate); std::streamsize size = file.tellg();

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