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r=nikomatsakis
Closes #54538: `unused_patterns` lint
Closes #54538
r? @nikomatsakis
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In the comments of (closed, defunct) pull request #54884, Mazdak
"Centril" Farrokhzad noted that must-use annotations didn't work on an
associated function (what other communities might call a "static
method"). Subsequent logging revealed that in this case we have a
`Def::Method`, whereas the lint pass was only matching on
`Def::Fn`. (One could argue that those def-names are thereby
misleading—must-use for self-ful methods have always worked—but
documenting or reworking that can be left to another day.)
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r=nikomatsakis
Fix #54707 - parse_trait_item_ now handles interpolated blocks as function body decls
Fix #54707 - parse_trait_item_ now handles interpolated blocks as function body decls
Previously parsing trait items only handled opening brace token and semicolon, I added a branch to the match statement that will also handle interpolated blocks.
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Given the following code, compile successfuly:
```
macro_rules! test {
(
fn fun() -> Option<Box<$t:ty>>;
) => {
fn fun(x: $t) -> Option<Box<$t>>
{ Some(Box::new(x)) }
}
}
test! {
fn fun() -> Option<Box<i32>>;
}
```
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This commit fixes the issue #50452.
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Fix dead code lint for functions using impl Trait
Fixes https://github.com/rust-lang/rust/issues/54754
This is a minimal fix that doesn't add any new queries or touches unnecessary code. Please nominate for beta backport if wanted.
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oli-obk:mögen_konstante_funktionen_doch_bitte_endlich_stabil_sein, r=Centril
Stabilize `min_const_fn`
tracking issue: #53555
r? @Centril
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rustc: Allow `#[no_mangle]` anywhere in a crate
This commit updates the compiler to allow the `#[no_mangle]` (and
`#[export_name]` attributes) to be located anywhere within a crate.
These attributes are unconditionally processed, causing the compiler to
always generate an exported symbol with the appropriate name.
After some discussion on #54135 it was found that not a great reason
this hasn't been allowed already, and it seems to match the behavior
that many expect! Previously the compiler would only export a
`#[no_mangle]` symbol if it were *publicly reachable*, meaning that it
itself is `pub` and it's otherwise publicly reachable from the root of
the crate. This new definition is that `#[no_mangle]` *is always
reachable*, no matter where it is in a crate or whether it has `pub` or
not.
This should make it much easier to declare an exported symbol with a
known and unique name, even when it's an internal implementation detail
of the crate itself. Note that these symbols will persist beyond LTO as
well, always making their way to the linker.
Along the way this commit removes the `private_no_mangle_functions` lint
(also for statics) as there's no longer any need to lint these
situations. Furthermore a good number of tests were updated now that
symbol visibility has been changed.
Closes #54135
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This commit updates the compiler to allow the `#[no_mangle]` (and
`#[export_name]` attributes) to be located anywhere within a crate.
These attributes are unconditionally processed, causing the compiler to
always generate an exported symbol with the appropriate name.
After some discussion on #54135 it was found that not a great reason
this hasn't been allowed already, and it seems to match the behavior
that many expect! Previously the compiler would only export a
`#[no_mangle]` symbol if it were *publicly reachable*, meaning that it
itself is `pub` and it's otherwise publicly reachable from the root of
the crate. This new definition is that `#[no_mangle]` *is always
reachable*, no matter where it is in a crate or whether it has `pub` or
not.
This should make it much easier to declare an exported symbol with a
known and unique name, even when it's an internal implementation detail
of the crate itself. Note that these symbols will persist beyond LTO as
well, always making their way to the linker.
Along the way this commit removes the `private_no_mangle_functions` lint
(also for statics) as there's no longer any need to lint these
situations. Furthermore a good number of tests were updated now that
symbol visibility has been changed.
Closes #54135
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do not promote comparing function pointers
This *could* break existing code that relied on fn ptr comparison getting promoted to `'static` lifetime.
Fixes https://github.com/rust-lang/rust/issues/54696
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make run-pass tests with empty main just compile-pass tests
Many run-pass tests have an empty main, so there is not actually any point in running them. This makes them `compile-pass` tests instead, saving some time (generating the binary and then running it).
For now I did this only for `run-pass/issues`; if there is interest I can also do it for the other directories. I used `^\s*fn\s+main\(\s*\)\s*\{\s*\}` as regexp to identify these files.
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normalize param-env type-outlives predicates last
The normalization of type-outlives predicates can depend on misc.
environment predicates, but not the other way around. Inferred lifetime
bounds can propagate type-outlives bounds far and wide, so their
normalization needs to work well.
Fixes #54467
r? @nikomatsakis
beta-nominating because this is required for inferred_outlives_bounds, which is in beta
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The normalization of type-outlives predicates can depend on misc.
environment predicates, but not the other way around. Inferred lifetime
bounds can propagate type-outlives bounds far and wide, so their
normalization needs to work well.
Fixes #54467
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Panic when using mem::uninitialized or mem::zeroed on an uninhabited type
All code by @japaric. This re-submits one half of https://github.com/rust-lang/rust/pull/53508. This is likely not the one that introduced the perf regression, but just to be sure I'll do a perf run anyway.
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pnkfelix:issue-15287-kill-zflag-disabling-ast-check, r=alexcrichton
Remove `-Z disable_ast_check_for_mutation_in_guard`
One should use `#![feature(bind_by_move_pattern_guards)]` over `-Z disable_ast_check_for_mutation_in_guard`
cc #15287
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Make core::mem::needs_drop a const fn
This fixes #51929.
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Do not put noalias annotations by default
This will be re-enabled sooner or later depending on results of further
investigation.
Fixes #54462
Beta backport is: #54640
r? @nikomatsakis
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Bump to 1.31.0 and bootstrap from 1.30 beta
Closes #54594.
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This will be re-enabled sooner or later depending on results of further
investigation.
Fixes #54462
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This reverts commit c6e3d7fa3113aaa64602507f39d4627c427742ff, reversing
changes made to 4591a245c7eec9f70d668982b1383cd2a6854af5.
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disable_ast_check_for_mutation_in_guard`
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