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The no_mangle attribute is unsafe since Rust 2024

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Philipp Oppermann
2025-03-27 15:39:15 +01:00
parent 9345886d44
commit 9753695744
47 changed files with 149 additions and 149 deletions
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blog/content/edition-2/posts/01-freestanding-rust-binary/index.zh-CN.md
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@@ -184,7 +184,7 @@ fn panic(_info: &PanicInfo) -> ! {
读者也许会注意到，我们移除了 `main` 函数。原因很显然，既然没有底层运行时调用它，`main` 函数也失去了存在的必要性。为了重写操作系统的入口点，我们转而编写一个 `_start` 函数：
```rust
#[no_mangle]
#[unsafe(no_mangle)]
pub extern "C" fn _start() -> ! {
loop {}
}
@@ -422,7 +422,7 @@ rustflags = ["-C", "link-args=-e __start -static -nostartfiles"]
use core::panic::PanicInfo;
#[no_mangle] // 不重整函数名
#[unsafe(no_mangle)] // 不重整函数名
pub extern "C" fn _start() -> ! {
// 因为链接器会寻找一个名为 `_start` 的函数，所以这个函数就是入口点
// 默认命名为 `_start`