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Use wide pointers consistenly across the compiler #131202

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merged 1 commit into from
Oct 4, 2024
Merged

Use wide pointers consistenly across the compiler #131202

merged 1 commit into from
Oct 4, 2024

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@Urgau Urgau commented Oct 3, 2024 •
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This PR replace every use of "fat pointer" for the more recent "wide pointer" terminology.

As T-lang as preferred the "wide pointer" terminology, as can be seen on the last RFCs, on some lints, but also in the reference.

Currently we have a mix of both (including in error messages), which isn't great, but with this PR no more.

r? @jieyouxu (feel free to re-roll)

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Oct 3, 2024
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rustbot commented Oct 3, 2024

Some changes occurred in compiler/rustc_codegen_cranelift

cc @bjorn3

Some changes occurred in compiler/rustc_codegen_gcc

cc @antoyo, @GuillaumeGomez

This PR changes Stable MIR

cc @oli-obk, @celinval, @ouz-a

Some changes occurred to MIR optimizations

cc @rust-lang/wg-mir-opt

Some changes occurred to the CTFE / Miri interpreter

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jieyouxu commented Oct 3, 2024

@Urgau is there any kind of meeting or decision we can look at that shows T-lang preferred "wide pointers" over "fat pointers"?

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Urgau commented Oct 3, 2024 •
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A part from the indirect usage described in the PR description, I don't think so (at least I haven't found one). I think it just sort of happened.

cc @traviscross

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jieyouxu commented Oct 3, 2024 •
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A part from the indirect usage described in the PR description, I don't think so (at least I haven't found one). I think it just sort of happened.

Yeah personally I'm fine with sticking with one of "wide pointers" or "fat pointers" instead of mixing both terms, but I think we want this to be an explicit T-lang decision of migrating over to "wide pointers" with a clear definition in the reference that users can look at if they want clarity of what that concretely means.

For T-lang

Do we want to use "wide pointers" terminology over "fat pointers"? Is this term documented in the Reference?

Note that the Reference seems to use "wide pointers" in at least https://doc.rust-lang.org/reference/expressions/operator-expr.html?highlight=wide#semantics.

@rustbot label +I-lang-nominated +I-lang-easy-decision

If @traviscross knows that T-lang already prefers "wide pointers" over "fat pointers" then this is fine.

@jieyouxu jieyouxu added T-lang Relevant to the language team, which will review and decide on the PR/issue. I-lang-nominated Nominated for discussion during a lang team meeting. I-lang-easy-decision Issue: The decision needed by the team is conjectured to be easy. S-waiting-on-team Status: Awaiting decision from the relevant subteam (see the T-<team> label). and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 3, 2024
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Urgau commented Oct 3, 2024

@jieyouxu actually, T-lang explicitly discussed fat vs wide for the naming of the ambiguous_wide_pointer_comparison lint in #117758 (comment), #117758 (comment), #117758 (comment) and they FCP-ed it

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jieyouxu commented Oct 3, 2024

Ok great, in that case this seems fine.

@jieyouxu jieyouxu added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed I-lang-nominated Nominated for discussion during a lang team meeting. I-lang-easy-decision Issue: The decision needed by the team is conjectured to be easy. T-lang Relevant to the language team, which will review and decide on the PR/issue. S-waiting-on-team Status: Awaiting decision from the relevant subteam (see the T-<team> label). labels Oct 3, 2024
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LGTM with some nits, incl. consts and enums that still refers to FAT_PTR.

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jieyouxu commented Oct 3, 2024

@rustbot author

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Urgau commented Oct 4, 2024

@rustbot ready

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Thanks!

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jieyouxu commented Oct 4, 2024

@bors r+ rollup

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bors commented Oct 4, 2024

📌 Commit c2f8071 has been approved by jieyouxu

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 4, 2024
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jieyouxu commented Oct 4, 2024

@bors rollup=maybe

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jieyouxu commented Oct 4, 2024

Ah yeah.
@bors r-
Feel free to r=me after the tiny nit.

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Urgau commented Oct 4, 2024

@bors r=@jieyouxu

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📌 Commit 018ba05 has been approved by jieyouxu

It is now in the queue for this repository.

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Auto merge of rust-lang#131237 - GuillaumeGomez:rollup-il2i7z7, r=Gui…
c39f318 
…llaumeGomez

Rollup of 4 pull requests

Successful merges:

 - rust-lang#131034 (Implement RFC3695 Allow boolean literals as cfg predicates)
 - rust-lang#131202 (Use wide pointers consistenly across the compiler)
 - rust-lang#131230 (Enable `--no-sandbox` option by default for rustdoc GUI tests)
 - rust-lang#131232 (Week off of reviews to focus on docs)

r? `@ghost`
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@bors bors merged commit ba94a2a into rust-lang:master Oct 4, 2024
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@rustbot rustbot added this to the 1.83.0 milestone Oct 4, 2024
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Unrolled build for rust-lang#131202
1c20c31 
Rollup merge of rust-lang#131202 - Urgau:wide-ptrs-compiler, r=jieyouxu

Use wide pointers consistenly across the compiler

This PR replace every use of "fat pointer" for the more recent "wide pointer" terminology.

Since some time T-lang as preferred the "wide pointer" terminology, as can be seen on [the last RFCs](https://github.com/search?q=repo%3Arust-lang%2Frfcs+%22wide+pointer%22&type=code), on some [lints](https://doc.rust-lang.org/rustc/lints/listing/warn-by-default.html#ambiguous-wide-pointer-comparisons), but also in [the reference](https://doc.rust-lang.org/stable/reference/expressions/operator-expr.html?highlight=wide%20pointer#pointer-to-pointer-cast).

Currently we have a [mix of both](https://github.com/search?q=repo%3Arust-lang%2Frust+%22wide+pointer%22&type=code) (including in error messages), which isn't great, but with this PR no more.

r? `@jieyouxu` (feel free to re-roll)
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