Hey everyone! How can I pass string from Rust to c++

Question

C / C++

Jacob

Hey everyone! How can I pass string from Rust to c++

function that expects std::string?
When I'm passing CString the c++ functions tell that the string is empty

0

06.07.2024

16 ответов

35 просмотров

mito

😐

0

4 месяца назад

Pavel

There's no interop between Rust and C++, especially STL, you need to use a C layer in-between them. Check out this video for more information why https://youtu.be/RxtXGeDHu0w

0

4 месяца назад

Thomas

If it's a String in Rust, then they both want to "manage" it

0

4 месяца назад

Thomas

Rust wants to allocate, resize, and free its String C++ wants to allocate, resize, and free its std::string And they both have internal representations on how to store capacity and length etc

0

4 месяца назад

Jacob Автор вопроса

Thomas
If it's a String in Rust, then they both want to "...

Eventually I passed raw_parts instead of as_ptr and that way c++ could use it even after the rust function return

0

4 месяца назад

Thomas

Jacob
Eventually I passed raw_parts instead of as_ptr an...

Sounds like use after free but okay

0

4 месяца назад