堆栈溢出在鲁斯特0.13大固定大小的数组 [英] Stack overflow with large fixed size array in Rust 0.13

问题描述

我希望与防锈专家核实这个简单的防锈程序（在Linux上的x86-64系统rustc 0.13.0-夜间）：

I wish to verify with the Rust expert this simple Rust program (rustc 0.13.0-nightly on Linux x86-64 system):

/*
the runtime error is:
task '<main>' has overflowed its stack
Illegal instruction (core dumped)
*/

fn main() {
    let l = [0u, ..1_000_000u];
}

编译过程没有错误完全结束，但在运行该程序失败，在code注释中显示的错误。

The compile process ends perfectly with no error but at runtime the program failed with the error shown in the code comment.

是否有固定大小的数组鲁斯特尺寸的限制，或这是一个错误的地方在编译器？

Is there a limit to the dimension of fixed size array in Rust or is this a bug somewhere in the compiler?

推荐答案

锈病2MiB的默认堆栈大小，你只是运行的堆栈空间：

Rust has a default stack size of 2MiB, you are just running out of stack space:

fn main() {
    println!("min_stack = {}", std::rt::min_stack());
}

要分配该大小的数​​组必须使用其分配给堆箱：

To allocate the array of that size you have to allocate it on the heap using box:

fn main() {
    let l = box [0u, ..1_000_000u];
}

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