如何增加 `cargo test` 使用的线程的堆栈大小？

Question

I have a program that uses a large amount of stack. I use Linux, and so have already set the stack size limit via ulimit -s 1048576 .

Running cargo test -- --test-threads 1 works as expected, but when I use more than one thread, eg cargo test -- --test-threads 2 , I get fatal runtime error: stack overflow . I believe this is because the Rust thread default stack size, used when running tests, is too small.

How do I increase this stack size when running cargo test ?

Answer 1

Found it : RUST_MIN_STACK , as in RUST_MIN_STACK=104857600 cargo test .

Answer 2

Using stacker you are able to increase the size of threads