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This reverts commit 6810f5286b6b91daab06fc3dccb27d8c46f14349, reversing
changes made to 8586ec6980462c99a8926646201b2444d8938d29.
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Before this two macros with same name would be indistinguishable inside a
`FileName`. This caused a bug in incremental compilation (see #53097) since
two different macros would map out to the same `StableFilemapId`.
Fixes #53097.
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proc macro crates are essentially implemented as dynamic libraries using
a dlopen-based ABI. They are also Rust crates, so they have 2 worlds -
the "host" world in which they are defined, and the "target" world in
which they are used.
For all the "target" world knows, the proc macro crate might not even
be implemented in Rust, so leaks of details from the host to the target
must be avoided for correctness.
Because the "host" DefId space is different from the "target" DefId
space, any leak involving a DefId will have a nonsensical or
out-of-bounds DefKey, and will cause all sorts of crashes.
This PR fixes all leaks I have found in `decoder`. In particular, #54059
was caused by host native libraries leaking into the target, which feels
like it might even be a correctness issue if it doesn't cause an ICE.
Fixes #54059
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Rename all mentions of `nil` to `unit`
Fixes #53719.
Renamed keywords nil to unit.
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Co-authored-by: nikomatsakis
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This reverts commit d02a5ffaed9c395ae62ee12d0f4e04946c62edb1.
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fixes the *first* false positive reported in #53964
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fix `is_non_exhaustive` confusion between structs and enums
Structs and enums can both be non-exhaustive, with a very different
meaning. This PR splits `is_non_exhaustive` to 2 separate functions - 1
for structs, and another for enums, and fixes the places that got the
usage confused.
Fixes #53549.
r? @eddyb
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This completely splits the IS_NON_EXHAUSTIVE flag. No functional
changes intended.
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Use FxHash{Map,Set} instead of the default Hash{Map,Set} everywhere in rustc.
Most of the compiler uses the `Fx` hasher but some places ended up with the default one.
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create a valid DefIdTable for proc macro crates
At least the incremental compilation code, and a few other places in the
compiler, require the CrateMetadata for a loaded target crate to contain a
valid DefIdTable for the DefIds in the target.
Previously, the CrateMetadata for a proc macro contained the crate's
"host" DefIdTable, which is of course incompatible with the "target"
DefIdTable, causing ICEs. This creates a DefIdTable that properly refers
to the "proc macro" DefIds.
Fixes #49482.
r? @michaelwoerister
Should we beta-nominate this?
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fix for late-bound regions
Fix for https://github.com/rust-lang/rust/issues/53419
r? @nikomatsakis
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At least the incremental compilation code, and a few other places in the
compiler, require the CrateMetadata for a loaded target crate to contain a
valid DefIdTable for the DefIds in the target.
Previously, the CrateMetadata for a proc macro contained the crate's
"host" DefIdTable, which is of course incompatible with the "target"
DefIdTable, causing ICEs. This creates a DefIdTable that properly refers
to the "proc macro" DefIds.
Fixes #49482.
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Structs and enums can both be non-exhaustive, with a very different
meaning. This PR splits `is_non_exhaustive` to 2 separate functions - 1
for structs, and another for enums, and fixes the places that got the
usage confused.
Fixes #53549.
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Prefer `.nth(n)` over `.skip(n).next()`.
Found by clippy.
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Found by clippy.
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Merge `IdxSet` and `IdxSetBuf`
Because it simplifies things.
@r? nikomatsakis
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Ty{Adt|Array|Slice|RawPtr|Ref|FnDef|FnPtr|Dynamic|Closure|Generator|GeneratorWitness|Never|Tuple|Projection|Anon|Infer|Error}
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Rollup of 17 pull requests
Successful merges:
- #53030 (Updated RELEASES.md for 1.29.0)
- #53104 (expand the documentation on the `Unpin` trait)
- #53213 (Stabilize IP associated constants)
- #53296 (When closure with no arguments was expected, suggest wrapping)
- #53329 (Replace usages of ptr::offset with ptr::{add,sub}.)
- #53363 (add individual docs to `core::num::NonZero*`)
- #53370 (Stabilize macro_vis_matcher)
- #53393 (Mark libserialize functions as inline)
- #53405 (restore the page title after escaping out of a search)
- #53452 (Change target triple used to check for lldb in build-manifest)
- #53462 (Document Box::into_raw returns non-null ptr)
- #53465 (Remove LinkMeta struct)
- #53492 (update lld submodule to include RISCV patch)
- #53496 (Fix typos found by codespell.)
- #53521 (syntax: Optimize some literal parsing)
- #53540 (Moved issue-53157.rs into src/test/ui/consts/const-eval/)
- #53551 (Avoid some Place clones.)
Failed merges:
r? @ghost
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Fix typos found by codespell.
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Remove LinkMeta struct
Fixes #53291
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The Great Generics Generalisation: HIR Followup
Addresses the final comments in #48149.
r? @eddyb, but there are a few things I have yet to clean up. Making the PR now to more easily see when things break.
cc @yodaldevoid
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Now that the `Buf` vs. non-`Buf` distinction has been removed, it makes
sense to drop the `Buf` suffix and use the shorter names everywhere.
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Cleanup to librustc::session and related code
No functional changes, just some cleanup.
This also creates the `rustc_fs_util` crate, but I can remove that change if desired. It felt a little odd to force crates to depend on librustc for some fs utilities; and also seemed good to generally keep the size of librustc lower (for compile times); fs_util will compile in parallel with essentially the first crate since it has no dependencies beyond std.
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cleanup: Remove `Def::GlobalAsm`
Global asm is not something that needs to have a `Def` or `DefId`.
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