Segmentation error during dynamic loading in OSX

Question

I am trying to load a dynamic library in Rust. I get a segmentation error when passing a large Vecout of a dynamically loaded library function. This is a basic function that creates the Vec<i32>specified size. If the value Vecexceeds 8 MB, the program enters OSX mode. I didn’t have the same problem when working on Linux, can I look at it and tell me that I am doing something wrong? I run this with:

$ cargo build --release
$ ./target/release/linkfoo
8281
[1]    84253 segmentation fault  ./target/release/linkfoo

Cargo.toml

[package]
name = "linkfoo"
version = "0.1.0"
authors = ["Nate Mara <[e-mail]>"]

[dependencies]
libloading = "0.3.0"

[lib]
name = "foo"
crate-type = ["dylib"]

main.rs

extern crate libloading as lib;

fn main() {
    let dylib = lib::Library::new("./target/release/libfoo.dylib").expect("Failed to load library");
    let func = unsafe {
        let wrapped_func: lib::Symbol<fn(&[i32]) -> Vec<i32>> = dylib.get(b"alloc")
            .expect("Failed to load function");

        wrapped_func.into_raw()
    };

    let args = vec![8182];
    println!("{}", func(&args).len());
}

lib.rs

#[no_mangle]
pub fn alloc(args: &[i32]) -> Vec<i32> {
    let size = args[0] as usize;
    let mut mat = Vec::with_capacity(size);

    for _ in 0..size {
        mat.push(0);
    }

    mat
}

Answer 1

Rust jemalloc . segfault, , main.rs:

#![feature(alloc_system)]
extern crate alloc_system;