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Enclose type in backticks for "non-exhaustive patterns" error
This makes the error style consistent with the convention in error messages.
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Allow assignments in const contexts
fixes https://github.com/rust-lang/rust/issues/54098
fixes https://github.com/rust-lang/rust/issues/51251
fixes https://github.com/rust-lang/rust/issues/52613
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When confusing an associated type with a type argument, suggest the
appropriate syntax.
Given `Iterator<isize>`, suggest `Iterator<Item = isize>`.
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auto-dereferencing" error
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This makes the error style consistent with the convention in error messages.
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Rollup of 25 pull requests
Successful merges:
- #55562 (Add powerpc- and powerpc64-unknown-linux-musl targets)
- #55564 (test/linkage-visibility: Ignore on musl targets)
- #55827 (A few tweaks to iterations/collecting)
- #55834 (Forward the ABI of the non-zero sized fields of an union if they have the same ABI)
- #55857 (remove unused dependency)
- #55862 (in which the E0618 "expected function" diagnostic gets a makeover)
- #55867 (do not panic just because cargo failed)
- #55894 (miri enum discriminant handling: Fix treatment of pointers, better error when it is undef)
- #55916 (Make miri value visitor useful for mutation)
- #55919 (core/tests/num: Simplify `test_int_from_str_overflow()` test code)
- #55923 (reword #[test] attribute error on fn items)
- #55949 (ty: return impl Iterator from Predicate::walk_tys)
- #55952 (Update to Clang 7 on CI.)
- #55953 (#53488 Refactoring UpvarId)
- #55962 (rustdoc: properly calculate spans for intra-doc link resolution errors)
- #55963 (Stress test for MPSC)
- #55968 (Clean up some non-mod-rs stuff.)
- #55970 (Miri backtrace improvements)
- #56007 (CTFE: dynamically make sure we do not call non-const-fn)
- #56011 (Replace data.clone() by Arc::clone(&data) in mutex doc.)
- #56012 (avoid shared ref in UnsafeCell::get)
- #56016 (Add VecDeque::resize_with)
- #56027 (docs: Add missing backtick in object_safety.rs docs)
- #56043 (remove "approx env bounds" if we already know from trait)
- #56059 (Increase `Duration` approximate equal threshold to 1us)
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r=estebank
in which the E0618 "expected function" diagnostic gets a makeover
A woman of wisdom once told me, "Better late than never." (Can't reopen the previously-closed pull request from six months ago [due to GitHub limitations](https://github.com/rust-lang/rust/pull/51098#issuecomment-437647157).)
Now the main span focuses on the erroneous not-a-function callee, while showing the entire call expression is relegated to a secondary span. In the case where the erroneous callee is itself a call, we
point out the definition, and, if the call expression spans multiple lines, tentatively suggest a semicolon (because we suspect that the "outer" call is actually supposed to be a tuple).
The new `bug!` assertion is, in fact, safe (`confirm_builtin_call` is only called by `check_call`, which is only called with a first arg of kind `ExprKind::Call` in `check_expr_kind`).
Resolves #51055.
r? @estebank
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Now the main span focuses on the erroneous not-a-function callee,
while showing the entire call expression is relegated to a secondary
span. In the case where the erroneous callee is itself a call, we
point out the definition, and, if the call expression spans multiple
lines, tentatively suggest a semicolon (because we suspect that the
"outer" call is actually supposed to be a tuple).
The new `bug!` assertion is, in fact, safe (`confirm_builtin_call` is
only called by `check_call`, which is only called with a first arg of
kind `ExprKind::Call` in `check_expr_kind`).
Resolves #51055.
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Specifically no capitalisation or trailing full stops.
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Added to `DispatchFromDyn` and `CoerceUnsized` error messages
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Suggest to remove prefix `b` in cfg attribute lint string
Closes #54926
r? @estebank
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#45829 when a renamed import conflict with a previous import
Fix the suggestion when a renamed import conflict.
It check if the snipped contains `" as "`, and if so uses everything before for the suggestion.
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handle underscore bounds in unexpected places
Per the discussion on #54902, I made it a hard error to use lifetime bounds in various places where they used to be permitted:
- `where Foo: Bar<'_>` for example
I also moved error reporting to HIR lowering and added `Error` variants to let us suppress downstream errors that result.
I (imo) improved the error message wording to be clearer, as well.
In the process, I fixed the ICE in #52098.
Fixes #54902
Fixes #52098
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Custom E0277 diagnostic for `Path`
r? @nikomatsakis we have a way to target `Path` exclusively, we need to identify the correct text to show to consider #23286 fixed.
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This commit updates the test output for the updated NLL compare mode
that uses `-Z borrowck=migrate` rather than `-Z borrowck=mir`. The
previous commit changes `compiletest` and this commit only updates
`.nll.stderr` files.
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The #[panic_handler] attribute can be applied to non-functions
Fixes #54896.
This commit extends the existing lang items functionality to assert
that the `#[lang_item]` attribute is only found on the appropriate item
for any given lang item. That is, language items representing traits
must only ever have their corresponding attribute placed on a trait, for
example.
r? @nagisa
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It looks like we tend to use angle-brackets around the placeholder in
the few other places we use `Applicability::HasPlaceholders`, but that
would be confusing here, so ...
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This commit extends the existing lang items functionality to assert
that the `#[lang_item]` attribute is only found on the appropriate item
for any given lang item. That is, language items representing traits
must only ever have their corresponding attribute placed on a trait, for
example.
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Give a special message when the later use is from a call. Use the span
of the callee instead of the whole expression. For conflicting borrow
messages say that the later use is of the first borrow.
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it might fix the code.
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resolve: Relax shadowing restrictions on macro-expanded macros
Previously any macro-expanded macros weren't allowed to shadow macros from outer scopes.
Now only "more macro-expanded" macros cannot shadow "less macro-expanded" macros.
See comments to `fn may_appear_after` and added tests for more details and examples.
The functional changes are a21f6f588fc28c97533130ae44a6957b579ab58c and 46dd365ce9ca0a6b8653849b80267763c542842a, other commits are refactorings.
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Fix incorrect outer function type parameter message
Fix #51303.
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Add labels to ambiguous resolution errors
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Don't reduce E0161 to a warning in NLL migrate mode
This error has been on stable for a while, and allowing such code cause the compile to later ICE (since we can't codegen it). Errors `box UNSIZED EXPR` with unsized locals because it's not compatible with the current evaluation order (create the box before evaluating the expressions).
cc #53469 (fixes the ICE in this case)
cc @qnighy
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