Rollup of 9 pull requests #144145
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Rollup of 9 pull requests #144145
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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
Only relevant to the internal feature `more_maybe_bounds`.
We no longer move trait predicates where the self ty is a ty param to "the bounds of a ty param".
adds command line option for disabling llvm builds. it's useful in case of user having their own optimized LLVM, so they won't waste time for (at least) 3 LLVM builds. in this case PGO optimized will be already built in Stage 1, so my previous PR should be addressed for this change
* The phrasing "only does something for" made sense back when this diagnostic was a (hard) warning. Now however, it's simply a hard error and thus completely rules out "doing something". * The primary message was way too long * The new wording more closely mirrors the wording we use for applying other bound modifiers (like `const` and `async`) to incompatible traits. * "all other traits are not bound by default" is no longer accurate under Sized Hierarchy. E.g., traits and assoc tys are (currently) bounded by `MetaSized` by default but can't be relaxed using `?MetaSized` (instead, you relax it by adding `PointeeSized`). * I've decided against adding any diagnositic notes or suggestions for now like "trait `Trait` can't be relaxed as it's not bound by default" which would be incorrect for `MetaSized` and assoc tys as mentioned above) or "consider changing `?MetaSized` to `PointeeSized`" as the Sized Hierarchy impl is still WIP)
Having multiple relaxed bounds like `?Sized + ?Iterator` is actually *fine*. We actually want to reject *duplicate* relaxed bounds like `?Sized + ?Sized` because these most certainly represent a user error. Note that this doesn't mean that we accept more code because a bound like `?Iterator` is still invalid as it's not relaxing a *default* trait and the only way to define / use more default bounds is under the experimental and internal feature `more_maybe_bounds` plus `lang_items` plus unstable flag `-Zexperimental-default-bounds` (historical context: for the longest time, bounds like `?Iterator` were actually allowed and lead to a hard warning). Ultimately, this simply *reframes* the diagnostic. The scope of `more_maybe_bounds` / `-Zexperimental-default-bounds` remains unchanged as well.
Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
Distinguish delim kind to decide whether to emit unexpected closing delimiter Fixes rust-lang#138401
Show the offset, length and memory of uninit read errors r? ``@RalfJung`` I want to improve memory dumps in general. Not sure yet how to do so best within rust diagnostics, but in a perfect world I could generate a dummy in-memory file (that contains the rendered memory dump) that we then can then provide regular rustc `Span`s to. So we'd basically report normal diagnostics for them with squiggly lines and everything.
…er-errors More robustly deal with relaxed bounds and improve their diagnostics Scaffolding for rust-lang#135229 (CC rust-lang#135331) Fixes rust-lang#136944 (6th commit). Fixes rust-lang#142718 (8th commit).
…z, r=jhpratt stabilize `const_slice_reverse` cc rust-lang#135120, needs FCP.
opt-dist: make llvm builds optional adds command line option for disabling llvm builds. it's useful in case of user having their own optimized LLVM, so they won't waste time for (at least) 3 LLVM builds. in this case PGO optimized rustc will be already built in Stage 1, so rust-lang#143898 should be addressed for this change couldn't test locally on Linux laptop due to small SSD storage, will try now with windows-msvc host r? ``@Kobzol`` try-job: dist-x86_64-linux try-job: dist-x86_64-msvc
…, r=rcvalle Correct which exploit mitigations are enabled by default This was brought up by ``@Noratrieb`` in [#project-exploit-mitigations > Incorrect table in the rustc book](https://rust-lang.zulipchat.com/#narrow/channel/343119-project-exploit-mitigations/topic/Incorrect.20table.20in.20the.20rustc.20book/with/523684203). Thanks! :) [Rendered](https://github.com/rust-lang/rust/blob/132a47e72316b60e99c3e5fefb9c3a06641138e4/src/doc/rustc/src/exploit-mitigations.md) r? ``@rcvalle``
…rt, r=jdonszelmann Fix encoding of link_section and no_mangle cross crate Fixes rust-lang#144004 ``@bjorn3`` suggested using the `codegen_fn_attrs` query but given that these attributes are not that common it's probably fine to just always encode them. I can also go for that solution if it is preferred but that would require more changes. r? ``@jdonszelmann`` ``@fmease`` (whoever feels like it)
…er, r=petrochenkov Refactor `CrateLoader` into the `CStore` Removes the `CrateLoader` and moves the code to `CStore`. Now, if you want to use the `CrateLoader`, you can just use `CStore`. Should we rename `creader.rs` to `cstore.rs`? r? ``@petrochenkov``
Generalize `unsize` and `unsize_into` destinations Just something that I noticed during other work. We do this for most such functions, so let's do it here, too. r? ``@RalfJung``
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@bors r+ rollup=never p=5 |
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Jul 18, 2025
Rollup of 9 pull requests Successful merges: - #138554 (Distinguish delim kind to decide whether to emit unexpected closing delimiter) - #142673 (Show the offset, length and memory of uninit read errors) - #142693 (More robustly deal with relaxed bounds and improve their diagnostics) - #143382 (stabilize `const_slice_reverse`) - #143928 (opt-dist: make llvm builds optional) - #143961 (Correct which exploit mitigations are enabled by default) - #144050 (Fix encoding of link_section and no_mangle cross crate) - #144059 (Refactor `CrateLoader` into the `CStore`) - #144123 (Generalize `unsize` and `unsize_into` destinations) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
const_slice_reverse#143382 (stabilizeconst_slice_reverse)CrateLoaderinto theCStore#144059 (RefactorCrateLoaderinto theCStore)unsizeandunsize_intodestinations #144123 (Generalizeunsizeandunsize_intodestinations)r? @ghost
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