CODEWITHSUNDEEP
c++out-of-memorystdstring
canellas
canellas

Reputation: 697

How can I know if a std::string was actually created?

I want to use the std::string(size_type count,CharT ch) with a big value for count. Reading https://en.cppreference.com/w/cpp/string/basic_string/basic_string, I could not find an exception definition for this constructor, in case it fails.

If it is correct, although there is not a noexcept clause in the constructor, how can I be sure that the string was created? Should I check if its size is not 0?

Upvotes: 1

Views: 134

Answers (1)

Timo
Timo

Reputation: 9835

Your link says it under Exceptions:

Throws std::length_error if the length of the constructed string would exceed max_size() (for example, if count > max_size() for (2)). Calls to Allocator::allocate may throw.

Also std::string uses an allocator which means std::bad_alloc can be thrown aswell, if the allocator fails to allocate the requested amount of memory.

Upvotes: 5

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