Files
rust/tests/ui/error-codes
bors ed43cbcb88 Auto merge of #134299 - RalfJung:remove-start, r=compiler-errors
remove support for the (unstable) #[start] attribute

As explained by `@Noratrieb:`
`#[start]` should be deleted. It's nothing but an accidentally leaked implementation detail that's a not very useful mix between "portable" entrypoint logic and bad abstraction.

I think the way the stable user-facing entrypoint should work (and works today on stable) is pretty simple:
- `std`-using cross-platform programs should use `fn main()`. the compiler, together with `std`, will then ensure that code ends up at `main` (by having a platform-specific entrypoint that gets directed through `lang_start` in `std` to `main` - but that's just an implementation detail)
- `no_std` platform-specific programs should use `#![no_main]` and define their own platform-specific entrypoint symbol with `#[no_mangle]`, like `main`, `_start`, `WinMain` or `my_embedded_platform_wants_to_start_here`. most of them only support a single platform anyways, and need cfg for the different platform's ways of passing arguments or other things *anyways*

`#[start]` is in a super weird position of being neither of those two. It tries to pretend that it's cross-platform, but its signature is  a total lie. Those arguments are just stubbed out to zero on ~~Windows~~ wasm, for example. It also only handles the platform-specific entrypoints for a few platforms that are supported by `std`, like Windows or Unix-likes. `my_embedded_platform_wants_to_start_here` can't use it, and neither could a libc-less Linux program.
So we have an attribute that only works in some cases anyways, that has a signature that's a total lie (and a signature that, as I might want to add, has changed recently, and that I definitely would not be comfortable giving *any* stability guarantees on), and where there's a pretty easy way to get things working without it in the first place.

Note that this feature has **not** been RFCed in the first place.

*This comment was posted [in May](https://github.com/rust-lang/rust/issues/29633#issuecomment-2088596042) and so far nobody spoke up in that issue with a usecase that would require keeping the attribute.*

Closes https://github.com/rust-lang/rust/issues/29633

try-job: x86_64-gnu-nopt
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
try-job: test-various
2025-01-21 19:46:20 +00:00
..
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-09-15 09:51:32 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-04-03 15:59:21 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-04-14 09:42:53 -04:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-30 20:12:19 +00:00
2024-09-09 19:39:43 -07:00
2024-09-09 19:39:43 -07:00
2024-09-09 19:39:43 -07:00
2024-09-09 19:39:43 -07:00
2024-09-09 19:39:43 -07:00
2024-09-09 19:39:43 -07:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-07-22 22:04:49 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-06-21 19:00:18 -04:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-01-05 09:30:27 +00:00
2024-01-05 10:00:59 +00:00
2023-12-15 16:12:27 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-03-08 00:00:18 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-01-11 09:03:26 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-05-20 11:13:10 -04:00
2024-05-20 11:13:10 -04:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-12-15 16:12:27 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-20 21:10:38 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-06-21 19:00:18 -04:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-18 13:14:56 +13:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-16 17:00:23 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-11-29 00:45:14 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-12-20 22:53:56 -05:00
2024-12-02 23:56:24 -08:00
2024-03-20 17:29:58 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2024-01-13 12:46:58 -05:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00