Commit Graph

128882 Commits

Author SHA1 Message Date
Matthew Jasper
cfee49593d Handle multiple applicable projection candidates 2020-10-06 11:19:31 +01:00
Matthew Jasper
bc08b791bc Fix bugs in evaluating WellFormed predicates
- List the nestsed obligations in an order that works with the
  single pass used by evaluation
- Propagate recursion depth correctly
2020-10-06 11:19:31 +01:00
Matthew Jasper
f52b2d8890 Avoid cycle in nested obligations for object candidate
Bounds of the form `type Future: Future<Result=Self::Result>` exist in
some ecosystem crates. To validate these bounds for trait objects we
need to normalize `Self::Result` in a way that doesn't cause a cycle.
2020-10-06 11:19:31 +01:00
Matthew Jasper
582ccec1c5 Remove predicates on associated types from traits
These need to only be bounds to avoid cycle errors in trait checking.
2020-10-06 11:19:31 +01:00
Matthew Jasper
8787090964 Address review comments 2020-10-06 11:19:31 +01:00
Matthew Jasper
21eccbb587 Fix ICE 2020-10-06 11:19:30 +01:00
Matthew Jasper
0dda4154bd Fix tools 2020-10-06 11:19:30 +01:00
Matthew Jasper
042464f75a Fix tests and bootstrap 2020-10-06 11:19:30 +01:00
Matthew Jasper
2bdf723da7 Ensure that associated types for trait objects satisfy their bounds 2020-10-06 11:19:30 +01:00
Matthew Jasper
0a76584dcc Move some code from rustc_typeck to rustc_trait_selection 2020-10-06 11:19:30 +01:00
Matthew Jasper
d4d9e7f67f Remove unused part of return value from replace_bound_vars_with_placeholders 2020-10-06 11:19:30 +01:00
Matthew Jasper
1b07991574 Check associated type bounds for object safety violations 2020-10-06 11:19:30 +01:00
Matthew Jasper
5b279c8016 Check opaque types satisfy their bounds 2020-10-06 11:19:30 +01:00
Matthew Jasper
b3057f4d5f Check projections are well-formed when using projection candidates 2020-10-06 11:19:29 +01:00
Matthew Jasper
87f2f42dc2 Make projection wf check the predicates for the projection 2020-10-06 11:19:29 +01:00
Matthew Jasper
f958e6c246 Separate bounds and predicates for associated/opaque types 2020-10-06 11:19:29 +01:00
Matthew Jasper
d297147e62 Split bounds from predicates 2020-10-06 11:19:22 +01:00
Matthew Jasper
a7ead3bd53 Move item_bounds to typeck::collect 2020-10-06 11:18:45 +01:00
Matthew Jasper
0eb87ed55f Rename projection_predicates to item_bounds 2020-10-06 11:18:45 +01:00
bors
5ded394553 Auto merge of #77606 - JohnTitor:rollup-7rgahdt, r=JohnTitor
Rollup of 13 pull requests

Successful merges:

 - #76388 (Add a note about the panic behavior of math operations on time objects)
 - #76855 (Revamp rustdoc docs about documentation using `cfg`)
 - #76995 (Reduce boilerplate with the matches! macro)
 - #77228 (Add missing examples for MaybeUninit)
 - #77528 (Avoid unchecked casts in net parser)
 - #77534 (Disallow overriding forbid in same scope)
 - #77555 (Allow anyone to set regression labels)
 - #77558 (Rename bootstrap/defaults/{config.toml.PROFILE => config.PROFILE.toml})
 - #77559 (Fix rustdoc warnings about invalid Rust syntax)
 - #77560 (Fix LitKind's byte buffer to use refcounted slice)
 - #77573 (Hint doc use convert::identity relative link)
 - #77587 (Fix span for unicode escape suggestion.)
 - #77591 (Record `expansion_that_defined` into crate metadata)

Failed merges:

r? `@ghost`
2020-10-06 08:05:27 +00:00
Yuki Okushi
552933b79d
Rollup merge of #77591 - Aaron1011:fix/hygiene-def-scope, r=estebank
Record `expansion_that_defined` into crate metadata

Fixes #77523

Now that hygiene serialization is implemented, we also need to record
`expansion_that_defined` so that we properly handle a foreign
`SyntaxContext`.
2020-10-06 16:26:16 +09:00
Yuki Okushi
cc908f3b70
Rollup merge of #77587 - ehuss:unicode-escape-span, r=ecstatic-morse
Fix span for unicode escape suggestion.

If a unicode escape is missing the curly braces, the suggested fix is to add the curly braces, but the span for the fix was incorrect. It was not covering the `\u`, but the suggested text includes the `\u`, causing the resulting fix to be `"\u\u{1234}"`. This changes it so that the span includes the `\u`. An alternate fix would be to remove `\u` from the suggested fix, but I think the error message reads better if the entire escape is included.
2020-10-06 16:26:14 +09:00
Yuki Okushi
cdaf8c5f71
Rollup merge of #77573 - pickfire:patch-7, r=jyn514
Hint doc use convert::identity relative link

r? @jyn514
2020-10-06 16:26:12 +09:00
Yuki Okushi
5c1e01196d
Rollup merge of #77560 - rschoon:fix-litkind-rc-bytebuf, r=lcnr
Fix LitKind's byte buffer to use refcounted slice

While working on adding a new lint for clippy (see https://github.com/rust-lang/rust-clippy/pull/6044) for avoiding shared ownership of "mutable buffer" types (such as using `Rc<Vec<T>>` instead of `Rc<[T]>`), I noticed a type exported from rustc_ast and used by clippy gets caught by the lint. This PR fixes the exported type.

This PR includes the actual change to clippy too, but I will open a PR directly against clippy for that part (although it will currently fail to build there).
2020-10-06 16:26:11 +09:00
Yuki Okushi
2970af8e28
Rollup merge of #77559 - camelid:fix-rustdoc-warnings-invalid-rust-syntax, r=lcnr
Fix rustdoc warnings about invalid Rust syntax
2020-10-06 16:26:09 +09:00
Yuki Okushi
54d72d73e9
Rollup merge of #77558 - thomcc:defaults-toml-extension, r=jyn514
Rename bootstrap/defaults/{config.toml.PROFILE => config.PROFILE.toml}

This allows these files to have okay syntax highlighting in editors, and helps avoid nagging from editors which want to suggest that I install a plugin for `*.library` files to view the `config.toml.library` or whatever.

It's a very minor change.

r?@jyn514
2020-10-06 16:26:07 +09:00
Yuki Okushi
2b5049b5ea
Rollup merge of #77555 - camelid:patch-8, r=Mark-Simulacrum
Allow anyone to set regression labels

Cc https://rust-lang.zulipchat.com/#narrow/stream/241545-t-release/topic/improve.20reporting.20of.20regressions/near/212245535

r? @Mark-Simulacrum
2020-10-06 16:26:05 +09:00
Yuki Okushi
bc600c3905
Rollup merge of #77534 - Mark-Simulacrum:issue-70819-disallow-override-forbid-in-same-scope, r=petrochenkov
Disallow overriding forbid in same scope

Rebased #73379.

Fixes #70819.
2020-10-06 16:26:04 +09:00
Yuki Okushi
eac25fefaf
Rollup merge of #77528 - tamird:avoid-cast-net-parser, r=dtolnay
Avoid unchecked casts in net parser

Once this and #77426 are in, I'll send another PR adding scope id parsing.

r? @dtolnay
2020-10-06 16:26:02 +09:00
Yuki Okushi
d7123c2393
Rollup merge of #77228 - GuillaumeGomez:maybeuninit-examples, r=pickfire
Add missing examples for MaybeUninit

r? @Dylan-DPC
2020-10-06 16:26:00 +09:00
Yuki Okushi
d50349ba8d
Rollup merge of #76995 - LingMan:middle_matches, r=varkor
Reduce boilerplate with the matches! macro

Replaces simple bool `match`es of the form

    match $expr {
        $pattern => true
        _ => false
    }

and their inverse with invocations of the matches! macro.

Limited to rustc_middle for now to get my feet wet.
2020-10-06 16:25:58 +09:00
Yuki Okushi
97ee62cee4
Rollup merge of #76855 - jyn514:platform-specific, r=ollie27
Revamp rustdoc docs about documentation using `cfg`

- Move `cfg(doc)` out of `unstable-features`. It's not unstable.
- Remove outdated reference to `everybody_loops`.
- Improve wording in various places
- Give an example of code this allows (and does not allow)
- Link to `cfg(doc)` in `doc(cfg)` documentation. Since one is stable
and the other is not, don't combine them.
- Cleanup wording for `doc(cfg)`
- Incorporate changes from #76849
- Mention that `doc(cfg)` is also for features

Addresses https://github.com/rust-lang/rust/pull/76849#issuecomment-694516199.
Obsoletes https://github.com/rust-lang/rust/pull/76849 (I made sure to fix the weird dashes too).
r? @steveklabnik
2020-10-06 16:25:55 +09:00
Yuki Okushi
59476e9e57
Rollup merge of #76388 - poliorcetics:system-time-document-panic, r=KodrAus
Add a note about the panic behavior of math operations on time objects

Fixes #71226.
2020-10-06 16:25:53 +09:00
Joshua Nelson
dc5a000d79 Revamp rustdoc docs about documentation using cfg
- Move `cfg(doc)` out of `unstable-features`. It's not unstable.
- Remove outdated reference to `everybody_loops`.
- Improve wording in various places
- Give an example of code this allows (and does not allow)
- Link to `cfg(doc)` in `doc(cfg)` documentation. Since one is stable
and the other is not, don't combine them.
- Cleanup wording for `doc(cfg)`
- Incorporate changes from #76849
- Mention that `doc(cfg)` is also for features
2020-10-05 19:06:38 -04:00
Camelid
c8d25af698 Fixup 2020-10-05 15:07:27 -07:00
Aaron Hill
8d11f90a16
Record expansion_that_defined into crate metadata
Fixes #77523

Now that hygiene serialization is implemented, we also need to record
`expansion_that_defined` so that we properly handle a foreign
`SyntaxContext`.
2020-10-05 16:01:19 -04:00
bors
a1dfd2490a Auto merge of #77080 - richkadel:llvm-coverage-counters-2, r=tmandry
Working branch-level code coverage

Add a generalized implementation for computing branch-level coverage spans.

This iteration resolves some of the challenges I had identified a few weeks ago.

I've tried to implement a solution that is general enough to work for a lot of different graphs/patterns. It's encouraging to see the results on fairly large and complex crates seem to meet my expectations. This may be a "functionally complete" implementation.

Except for bug fixes or edge cases I haven't run into yet, the next and essentially final step, I think, is to replace some Counters with CounterExpressions (where their counter values can be computed by adding or subtracting other counters/expressions).

Examples of branch-level coverage support enabled in this PR:

* https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_show_coverage.coverage_of_drop_trait.txt
* https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_show_coverage.coverage_of_if.txt
* https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_show_coverage.coverage_of_if_else.txt
* https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_show_coverage.coverage_of_simple_loop.txt
* https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-cov-reports-base/expected_show_coverage.coverage_of_simple_match.txt
* ... _and others in the same directory_

Examples of coverage analysis results (MIR spanview files) used to inject counters in the right `BasicBlocks`:

* https://htmlpreview.github.io/?https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_drop_trait/coverage_of_drop_trait.main.-------.InstrumentCoverage.0.html
* https://htmlpreview.github.io/?https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_if/coverage_of_if.main.-------.InstrumentCoverage.0.html
* https://htmlpreview.github.io/?https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_if_else/coverage_of_if_else.main.-------.InstrumentCoverage.0.html
* https://htmlpreview.github.io/?https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_simple_loop/coverage_of_simple_loop.main.-------.InstrumentCoverage.0.html
* https://htmlpreview.github.io/?https://github.com/richkadel/rust/blob/llvm-coverage-counters-2/src/test/run-make-fulldeps/instrument-coverage-mir-cov-html-base/expected_mir_dump.coverage_of_simple_match/coverage_of_simple_match.main.-------.InstrumentCoverage.0.html
* ... _and others in the same directory_

Here is some sample coverage output after compiling a few real-world crates with the new branch-level coverage features:

<img width="801" alt="Screen Shot 2020-09-25 at 1 03 11 PM" src="https://user-images.githubusercontent.com/3827298/94316848-fd882c00-ff39-11ea-9cff-0402d3abd1e7.png">
<img width="721" alt="Screen Shot 2020-09-25 at 1 00 36 PM" src="https://user-images.githubusercontent.com/3827298/94316886-11cc2900-ff3a-11ea-9d03-80b26c8a5173.png">
<img width="889" alt="Screen Shot 2020-09-25 at 12 54 57 PM" src="https://user-images.githubusercontent.com/3827298/94316900-18f33700-ff3a-11ea-8a80-58f67d84b8de.png">

r? `@tmandry`
FYI: `@wesleywiser`
2020-10-05 19:34:44 +00:00
Eric Huss
35192ff574 Fix span for unicode escape suggestion. 2020-10-05 11:19:08 -07:00
bors
ea7e131435 Auto merge of #77171 - VFLashM:better_sso_structures, r=oli-obk
Better sso structures

This change greatly expands interface of MiniSet/MiniMap and renames them because they are no longer "Mini".
2020-10-05 17:18:01 +00:00
Rich Kadel
6f627663a7 Renamed tests to avoid exceeding Windows max path limit 2020-10-05 09:40:25 -07:00
Ivan Tham
cb881d36ae
hint doc use intra-doc links
Co-authored-by: Joshua Nelson <joshua@yottadb.com>
2020-10-05 23:29:43 +08:00
Rich Kadel
f5aebad28f Updates to experimental coverage counter injection
This is a combination of 18 commits.

Commit #2:

Additional examples and some small improvements.

Commit #3:

fixed mir-opt non-mir extensions and spanview title elements

Corrected a fairly recent assumption in runtest.rs that all MIR dump
files end in .mir. (It was appending .mir to the graphviz .dot and
spanview .html file names when generating blessed output files. That
also left outdated files in the baseline alongside the files with the
incorrect names, which I've now removed.)

Updated spanview HTML title elements to match their content, replacing a
hardcoded and incorrect name that was left in accidentally when
originally submitted.

Commit #4:

added more test examples

also improved Makefiles with support for non-zero exit status and to
force validation of tests unless a specific test overrides it with a
specific comment.

Commit #5:

Fixed rare issues after testing on real-world crate

Commit #6:

Addressed PR feedback, and removed temporary -Zexperimental-coverage

-Zinstrument-coverage once again supports the latest capabilities of
LLVM instrprof coverage instrumentation.

Also fixed a bug in spanview.

Commit #7:

Fix closure handling, add tests for closures and inner items

And cleaned up other tests for consistency, and to make it more clear
where spans start/end by breaking up lines.

Commit #8:

renamed "typical" test results "expected"

Now that the `llvm-cov show` tests are improved to normally expect
matching actuals, and to allow individual tests to override that
expectation.

Commit #9:

test coverage of inline generic struct function

Commit #10:

Addressed review feedback

* Removed unnecessary Unreachable filter.
* Replaced a match wildcard with remining variants.
* Added more comments to help clarify the role of successors() in the
CFG traversal

Commit #11:

refactoring based on feedback

* refactored `fn coverage_spans()`.
* changed the way I expand an empty coverage span to improve performance
* fixed a typo that I had accidently left in, in visit.rs

Commit #12:

Optimized use of SourceMap and SourceFile

Commit #13:

Fixed a regression, and synched with upstream

Some generated test file names changed due to some new change upstream.

Commit #14:

Stripping out crate disambiguators from demangled names

These can vary depending on the test platform.

Commit #15:

Ignore llvm-cov show diff on test with generics, expand IO error message

Tests with generics produce llvm-cov show results with demangled names
that can include an unstable "crate disambiguator" (hex value). The
value changes when run in the Rust CI Windows environment. I added a sed
filter to strip them out (in a prior commit), but sed also appears to
fail in the same environment. Until I can figure out a workaround, I'm
just going to ignore this specific test result. I added a FIXME to
follow up later, but it's not that critical.

I also saw an error with Windows GNU, but the IO error did not
specify a path for the directory or file that triggered the error. I
updated the error messages to provide more info for next, time but also
noticed some other tests with similar steps did not fail. Looks
spurious.

Commit #16:

Modify rust-demangler to strip disambiguators by default

Commit #17:

Remove std::process::exit from coverage tests

Due to Issue #77553, programs that call std::process::exit() do not
generate coverage results on Windows MSVC.

Commit #18:

fix: test file paths exceeding Windows max path len
2020-10-05 08:02:58 -07:00
Ivan Tham
5541456094
Hint doc use convert::identity relative link 2020-10-05 22:47:52 +08:00
bors
f317a93d4d Auto merge of #77543 - Mark-Simulacrum:rsp-quoting, r=eddyb
Force posix-style quoting on lld, independent of host platform

This just blindly applies the logic from `@eddyb's` comment here: https://github.com/rust-lang/rust/issues/76466#issuecomment-699024973

Hopefully, this fixed #76466 -- I cannot test this though.
2020-10-05 13:54:22 +00:00
Mark Rousskov
e8325b0f40 Instruct lld that our @ files are posix-style, not Windows
An upstream LLVM change changed behavior here to respect the host system quoting
rules; previously the posix-style format was always used for @files.
2020-10-05 08:01:44 -04:00
bors
d890e64dff Auto merge of #77549 - tmiasko:simplify-branch-same-fix, r=oli-obk
Fix miscompile in SimplifyBranchSame

Cherry-picked from #77486, but with a different test case that used to be compiled incorrectly on both master & beta branches.
2020-10-05 11:41:59 +00:00
Guillaume Gomez
b1ce6190ae Add missing examples for MaybeUninit 2020-10-05 13:21:20 +02:00
bors
62bfcfd8a3 Auto merge of #77552 - ecstatic-morse:body-def-id, r=lcnr
Replace `(Body, DefId)` with `Body` where possible

Follow-up to #77430.

I `grep`-ed for parameter lists in which a `Body` appeared within a few lines of a `DefId`, so it's possible that I missed some cases, but this should be pretty complete. Most of these changes were mechanical, but there's a few places where I started calling things "caller" and "callee" when multiple `DefId`s were in-scope at once. Also, we should probably have a helper function on `Body` that returns a `LocalDefId`. I can do that in this PR or in a follow-up.
2020-10-05 09:26:32 +00:00
bors
efbaa41306 Auto merge of #77557 - Dylan-DPC:rollup-aib9ptp, r=Dylan-DPC
Rollup of 11 pull requests

Successful merges:

 - #75853 (Use more intra-doc-links in `core::fmt`)
 - #75928 (Remove trait_selection error message in specific case)
 - #76329 (Add check for doc alias attribute at crate level)
 - #77219 (core::global_allocator docs link to std::alloc::GlobalAlloc)
 - #77395 (BTreeMap: admit the existence of leaf edges in comments)
 - #77407 (Improve build-manifest to work with the improved promote-release)
 - #77426 (Include scope id in SocketAddrV6::Display)
 - #77439 (Fix missing diagnostic span for `impl Trait` with const generics, and add various tests for `min_const_generics` and `const_generics`)
 - #77471 (BTreeMap: refactoring around edges, missed spots)
 - #77512 (Allow `Abort` terminators in all const-contexts)
 - #77514 (Replace some once(x).chain(once(y)) with [x, y] IntoIter)

Failed merges:

r? `@ghost`
2020-10-05 02:49:51 +00:00
Camelid
c877ff3664 Fix rustdoc warnings about invalid Rust syntax 2020-10-04 19:35:44 -07:00