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Switch library to Rust 2021 #88638

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m-ou-se opened this issue Sep 4, 2021 · 8 comments · Fixed by #92068
Closed

Switch library to Rust 2021 #88638

m-ou-se opened this issue Sep 4, 2021 · 8 comments · Fixed by #92068
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A-edition-2021 Area: The 2021 edition S-blocked Status: Marked as blocked ❌ on something else such as an RFC or other implementation work. T-libs Relevant to the library team, which will review and decide on the PR/issue.

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@m-ou-se
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m-ou-se commented Sep 4, 2021

This is blocked on the beta/bootstrap compiler being updated to 1.56.

@m-ou-se m-ou-se added A-edition-2021 Area: The 2021 edition S-blocked Status: Marked as blocked ❌ on something else such as an RFC or other implementation work. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Sep 4, 2021
@m-ou-se
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m-ou-se commented Sep 8, 2021

This is blocked on an issue with assert and debug_assert using the edition of libccore instead of the one who invoked it. (For assert only on Rust 2015 and 2018, for debug_assert on all editions.)

https://rust-lang.zulipchat.com/#narrow/stream/268952-edition-2021/topic/libcore.202021.20bug/near/252504325

@camelid
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camelid commented Sep 18, 2021

(Note that this is blocked on #88638 (comment). The bootstrap compiler is now 1.56, so that's not a blocker.)

Manishearth added a commit to Manishearth/rust that referenced this issue Oct 7, 2021
Manishearth added a commit to Manishearth/rust that referenced this issue Oct 8, 2021
workingjubilee added a commit to workingjubilee/rustc that referenced this issue Oct 8, 2021
@rukai
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rukai commented Dec 17, 2021

I tried setting core to 2021 and got this error:
image
Adding rustc_const_stable to panic_fmt resolved the issue but its strange that this issue didnt appear until the edition was set to 2021.

Is this another blocker? Or are we supposed to just add a rustc_const_stable?

@m-ou-se
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m-ou-se commented Dec 17, 2021

strange that this issue didnt appear until the edition was set to 2021.

That's expected. panic!("just a string") didn't use panic_fmt in Rust 2018, but does in Rust 2021. See https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html

@m-ou-se
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m-ou-se commented Dec 17, 2021

@rust-lang/wg-const-eval: Looks like the "const-stable functions can only call other const-stable functions" check doesn't play well with #[rustc_do_not_const_check].

@fee1-dead
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@rustbot claim

@m-ou-se
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m-ou-se commented Dec 17, 2021

@fee1-dead what part are you claiming? The migration of core is blocked on the const check, and the migration of std is already in progress in #92030.

@fee1-dead
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I will fix the const check. And since this is a tracking issue I will unclaim. Sorry for the confusion

@fee1-dead fee1-dead removed their assignment Dec 17, 2021
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Dec 18, 2021
Update stdlib to the 2021 edition

progress towards rust-lang#88638

I couldnt find a way to run the 2018 style panic tests against 2018 so I just deleted them, maybe theres a way to do it that I missed though?
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Dec 18, 2021
Update stdlib to the 2021 edition

progress towards rust-lang#88638

I couldnt find a way to run the 2018 style panic tests against 2018 so I just deleted them, maybe theres a way to do it that I missed though?
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Dec 18, 2021
Update stdlib to the 2021 edition

progress towards rust-lang#88638

I couldnt find a way to run the 2018 style panic tests against 2018 so I just deleted them, maybe theres a way to do it that I missed though?
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4 participants