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Remove some reexports in `rustc_middle`
This will help get these imports out of the way of detecting the true dependencies in and out to `rustc_middle`, thereby helping future work towards https://github.com/rust-lang/rust/issues/65031.
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Update cargo
8 commits in 8a0d4d9c9abc74fd670353094387d62028b40ae9..6e07d2dfb7fc87b1c9489de41da4dafa239daf03
2020-03-24 17:57:04 +0000 to 2020-03-31 03:22:39 +0000
- Fix man page typo for "Owner Options". (rust-lang/cargo#8057)
- enable progress bar on all UNIX platforms (rust-lang/cargo#8054)
- Squelch some rustdoc warnings. (rust-lang/cargo#8052)
- Remove clippy tests. (rust-lang/cargo#8053)
- Fix -Zfeatures=itarget with certain host dependencies (rust-lang/cargo#8048)
- Checking for binary that is built as an implicit dependency of an integration test. (rust-lang/cargo#8020)
- Use stabilized version of rustdoc's --crate-version (rust-lang/cargo#8039)
- Remove the `git-checkout` subcommand. (rust-lang/cargo#8040)
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Renamed `PerDefTables` to `Tables`
Originally suggested by @eddyb
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parse: recover on `const fn()` / `async fn()`
Recover on `const fn()` and `async fn()` function pointers, suggesting to remove the qualifier.
For example:
```
error: an `fn` pointer type cannot be `async`
--> $DIR/recover-const-async-fn-ptr.rs:6:11
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LL | type T3 = async fn();
| -----^^^^^
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| `async` because of this
| help: remove the `async` qualifier
```
r? @estebank
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Implement Hash for Infallible
https://www.reddit.com/r/rust/comments/fmllgx/never_crate_stable_alternative_to/ lists not implementing `Hash` as a reason for the `never` crate. I see no reason not to implement `Hash` for `Infallible`, so might as well do it.
No changes necessary for `!`, because `!` already implements `Hash` (see https://github.com/rust-lang/rust/pull/51404).
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Allow the `SimplifyLocals` pass to remove reads of discriminants if the
read is never used.
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This commit adds a STILL_FURTHER_SPECIALIZABLE flag to `TypeFlags`
which replaces `needs_infer` and `needs_subst` in `Instance::resolve`
and `assemble_candidates_from_impls.`
Signed-off-by: David Wood <david@davidtw.co>
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GHA: enable running multiple try builds at the same time
While for auto, try and PR builds we only want the latest commit to be tested, that's not true for try builds: each commit pushed to the branch is a different PR being tested, and we want multiple PRs to be tested in parallel if there is enough demand.
Fixes #70569
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properly closed block.
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Overhaul of the `AllocRef` trait to match allocator-wg's latest consens; Take 2
GitHub won't let me reopen #69889 so I make a new PR.
In addition to #69889 this fixes the unsoundness of `RawVec::into_box` when using allocators supporting overallocating. Also it uses `MemoryBlock` in `AllocRef` to unify `_in_place` methods by passing `&mut MemoryBlock`. Additionally, `RawVec` now checks for `size_of::<T>()` again and ignore every ZST. The internal capacity of `RawVec` isn't used by ZSTs anymore, as `into_box` now requires a length to be specified.
r? @Amanieu
fixes rust-lang/wg-allocators#38
fixes rust-lang/wg-allocators#41
fixes rust-lang/wg-allocators#44
fixes rust-lang/wg-allocators#51
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The modified code to handle parsing raw strings didn't properly account for the case where there was no "#" on either end and erroneously reported this strings as complete. This lead to a panic trying to read off the end of the file.
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Update Clippy
r? @Manishearth
Closes #70663
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compiletest: don't use `std::io::stdout()`, as it bypasses `set_print`.
This PR undoes a change made during #69916, which became unnecessary during review but was left in by accident, and which isn't correct due to `libtest` using `std::io::set_print`, which overwrites the `println!` behavior but *not* `writeln!(std::io::stdout(), ...)`.
The effect of using `writeln!(std::io::stdout(), ...)` was that the diff output would show *while* running the tests, instead of at the end, when failing tests are listed.
r? @Mark-Simulacrum cc @oli-obk
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clean up E0468 explanation
r? @Dylan-DPC
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r=Mark-Simulacrum
cargotest: remove webrender
The current webrender commit occasionally fails without a reason, and the latest webrender commit is missing a dependency on our Windows builders. It's not worth installing an extra dependency for cargotest, and the spurious failure makes keeping this test not worth it.
r? @Mark-Simulacrum
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rustc_target::abi: rename FieldPlacement to FieldsShape.
Originally suggested by @eddyb.
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Miri: make backtrace function names and spans match up
Currently, Miri backtraces are a bit confusing:
```
error: Undefined Behavior: entering unreachable code
--> tests/compile-fail/never_transmute_void.rs:10:11
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10 | match v {} //~ ERROR entering unreachable code
| ^ entering unreachable code
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= help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
= help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information
note: inside call to `f` at tests/compile-fail/never_transmute_void.rs:17:5
--> tests/compile-fail/never_transmute_void.rs:17:5
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17 | f(v); //~ inside call to `f`
| ^^^^
= note: inside call to `main` at /home/r/.rustup/toolchains/miri/lib/rustlib/src/rust/src/libstd/rt.rs:67:34
= note: inside call to closure at /home/r/.rustup/toolchains/miri/lib/rustlib/src/rust/src/libstd/rt.rs:52:73
= note: inside call to closure at /home/r/.rustup/toolchains/miri/lib/rustlib/src/rust/src/libstd/sys_common/backtrace.rs:130:5
```
When reading this like a normal backtrace, one would expect that e.g. the backrace involves the "main" function at "libstd/rt.rs:67:34". But that is not actually where we are in the main function, that is *where the main function is called*.
This is not how backtraces are usually rendered (including e.g. with `RUST_BACKTRACE=1`). Usually we print next to each function name where inside that function the frame is currently executing, not where the *parent* frame is executing. With this PR and the Miri side at https://github.com/rust-lang/miri/pull/1283, the backtrace now looks as follows:
```
error: Undefined Behavior: entering unreachable code
--> tests/compile-fail/never_transmute_void.rs:10:11
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10 | match v {} //~ ERROR entering unreachable code
| ^ entering unreachable code
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= help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
= help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information
= note: inside `f` at tests/compile-fail/never_transmute_void.rs:10:11
note: inside `main` at tests/compile-fail/never_transmute_void.rs:17:5
--> tests/compile-fail/never_transmute_void.rs:17:5
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17 | f(v); //~ inside `main`
| ^^^^
= note: inside closure at /home/r/src/rust/rustc/src/libstd/rt.rs:67:34
= note: inside closure at /home/r/src/rust/rustc/src/libstd/rt.rs:52:73
= note: inside `std::sys_common::backtrace::__rust_begin_short_backtrace::<[closure@DefId(1:6034 ~ std[87db]::rt[0]::lang_start_internal[0]::{{closure}}[0]::{{closure}}[0]) 0:&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe], i32>` at /home/r/src/rust/rustc/src/libstd/sys_common/backtrace.rs:130:5
```
Now function name and printed line numbers match up in the notes.
This code is partially shared with const-eval, so the change also affects const-eval: instead of printing what is being called at some span, we print which function/constant this span is inside.
With this, we can also remove the `span` field from Miri's stack frames (which used to track the *caller span* of that frame, quite confusing), and then get of a whole lot of `span` arguments that ultimately just served to fill that field (and as a fallback for `caller_location`, which however was never actually used).
r? @oli-obk
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Track the finalizing node in the specialization graph
Fixes https://github.com/rust-lang/rust/issues/70419
Fixes https://github.com/rust-lang/rust/issues/70442
r? @eddyb
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Add git repo address to unstable book
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Use place directly its copy
r? @oli-obk
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Ensure LLVM is in the link path for "fulldeps" tests
This is a follow-up to #70123, which added `llvm-config --libdir` to the
`LIBRARY_PATH` for rustc tools. We need the same for "run-make-fulldeps"
and "ui-fulldeps" tests which depend on compiler libraries, implicitly
needing to link to `-lLLVM` as well.
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Add `can_unwind` field to `FnAbi`
This is a pure refactoring with no behavior changes.
Extracted out of #70467
r? @eddyb
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Improve error messages for raw strings (#60762)
This diff improves error messages around raw strings in a few ways:
- Catch extra trailing `#` in the parser. This can't be handled in the lexer because we could be in a macro that actually expects another # (see test)
- Refactor & unify error handling in the lexer between ByteStrings and RawByteStrings
- Detect potentially intended terminators (longest sequence of "#*" is suggested)
Fixes #60762
cc @estebank who reviewed the original (abandoned) PR for the same ticket.
r? @Centril
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Add `-Z dump-mir-dataflow` flag for dumping dataflow results visualization
Previously, to visualize the results of a MIR dataflow pass, one had to add a `#[rustc_mir(borrowck_graphviz_postflow)]` attribute to functions of interest. However, there is no way to specify this attribute on closures and generators, so it was impossible to view results for these MIR bodies.
This PR adds a flag, `-Z dump-mir-dataflow`, which will output the dataflow results for any functions specified in `-Z dump-mir` to the output directory specified by `-Z dump-mir-dir`. This behavior is modeled on the `-Z dump-mir-graphviz` flag.
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bump Miri
r? @ghost Cc @oli-obk
Fixes https://github.com/rust-lang/rust/issues/70521
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