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2018-02-11rustc_mir: insert a dummy access to places being matched on, when building MIR.Eduard-Mihai Burtescu-68/+102
2018-02-03Auto merge of #47969 - Manishearth:ice-ice-beta, r=Mark-Simulacrumbors-0/+16
Backport rustdoc ICE fixes to beta backport of #47959
2018-02-03Add regression testManish Goregaokar-0/+16
2018-02-02Auto merge of #47943 - MaloJaffre:beta-backport, r=Mark-Simulacrumbors-2/+65
[beta] Backports Cherry-picked into beta: - #47762 - #47794 - #47891
2018-02-02Auto merge of #47918 - nikomatsakis:issue-47139-beta, r=eddybbors-0/+162
Backport 47738 to beta Backport of #47738 to beta branch.
2018-02-01rustc_trans: keep LLVM types for trait objects anonymous.Eduard-Mihai Burtescu-2/+20
2018-02-01Expand union test to include different typesRyan Cumming-7/+26
2018-02-01Fix ICE on const eval of union fieldRyan Cumming-0/+26
MIR's `Const::get_field()` attempts to retrieve the value for a given field in a constant. In the case of a union constant it was falling through to a generic `const_get_elt` based on the field index. As union fields don't have an index this caused an ICE in `llvm_field_index`. Fix by simply returning the current value when accessing any field in a union. This works because all union fields start at byte offset 0. The added test uses `const_fn` it ensure the field is extracted using MIR's const evaluation. The crash is reproducible without it, however. Fixes #47788
2018-01-31add regression testNiko Matsakis-0/+162
Fixes #47139
2018-01-23rustc: Lower link args to `@`-files on Windows moreAlex Crichton-0/+103
When spawning a linker rustc has historically been known to blow OS limits for the command line being too large, notably on Windows. This is especially true of incremental compilation where there can be dozens of object files per compilation. The compiler currently has logic for detecting a failure to spawn and instead passing arguments via a file instead, but this failure detection only triggers if a process actually fails to spawn. Unfortunately on Windows we've got something else to worry about which is `cmd.exe`. The compiler may be running a linker through `cmd.exe` where `cmd.exe` has a limit of 8192 on the command line vs 32k on `CreateProcess`. Moreso rustc actually succeeds in spawning `cmd.exe` today, it's just that after it's running `cmd.exe` fails to spawn its child, which rustc doesn't currently detect. Consequently this commit updates the logic for the spawning the linker on Windows to instead have a heuristic to see if we need to pass arguments via a file. This heuristic is an overly pessimistic and "inaccurate" calculation which just calls `len` on a bunch of `OsString` instances (where `len` is not precisely the length in u16 elements). This number, when exceeding the 6k threshold, will force rustc to always pass arguments through a file. This strategy should avoid us trying to parse the output on Windows of the linker to see if it successfully spawned yet failed to actually sub-spawn the linker. We may just be passing arguments through files a little more commonly now... The motivation for this commit was a recent bug in Gecko [1] when beta testing, notably when incremental compilation was enabled it blew out the limit on `cmd.exe`. This commit will also fix #46999 as well though as emscripten uses a bat script as well (and we're blowing the limit there). [1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1430886 Closes #46999 (cherry picked from commit 66366f9)
2018-01-23avoid double-unsizing arrays in bytestring match loweringAriel Ben-Yehuda-0/+37
The match lowering code, when lowering matches against bytestrings, works by coercing both the scrutinee and the pattern to `&[u8]` and then comparing them using `<[u8] as Eq>::eq`. If the scrutinee is already of type `&[u8]`, then unsizing it is both unneccessary and a trait error caught by the new and updated MIR typeck, so this PR changes lowering to avoid doing that (match lowering tried to avoid that before, but that attempt was quite broken). Fixes #46920.
2018-01-23Add incremental-fulldeps test suite and regression test for #47290.Michael Woerister-0/+58
2018-01-23Compute LLVM argument indices correctly in face of paddingRobin Kruppe-0/+19
Closes #47278
2018-01-12Treat #[path] files as mod.rs filesTaylor Cramer-26/+1
2018-01-10Generate code for const- and inline-fns if -Clink-dead-code is specified.Michael Woerister-0/+27
2018-01-01Auto merge of #46278 - MaloJaffre:ci-compiler-docs, r=kennytmbors-39/+0
Add compiler docs testing to CI. Fixes #47025. I don't know if `x86_64-gnu` is the right builder for this, but there seems to be time left on [Travis](https://travis-ci.org/rust-lang/rust/jobs/307488864). Remaining problems blocking this PR: - [x] broken links caused by rustdoc issues: - [x] `pub use self::Enum::...`: #46766 and #46767 (fixed by #47050, thanks @ollie27!) - [x] `impl Deref for DerefToStdType`: #32129 (ignored in linkchecker) - [x] `#[feature(decl_macro)]` and `use std::vec`: #47038 (ignored in linkchecker) - [x] `rustc_data_structures::sync::{Lrc, RwLock}` aliases `std` types: #32130 (ignored in linkchecker) - [x] markdown differences, in rust repository and in external crates, now failing the build with #46880 merged (all fixed) - [x] multiple crate updates needed: `rand`, `log`, `parking_lot_core`, `flate2` - [x] submodule updates needed to deduplicate dependencies: `rust-installer`, ~`cargo`~ (done by #47052) - [x] #44953 test broken by `log` update (removed, this can be controversial) - [x] Waiting `x86_64-gnu` build results ([done](https://travis-ci.org/rust-lang/rust/builds/323451069)) See individual commits for more details.
2018-01-01Remove a test blocking the update of the `log` crateMalo Jaffré-39/+0
It tested #44953. `log` macros in newer versions are no longer recursive, so these duplicated error messages (about unstable feature uses) previously occurring at each level of recursion are no longer possible, even with the fix by #45540. Furthermore this test breaks when multiple versions of `log` are in the sysroot (`log 0.3.9` depends on`log 0.4.1`)
2018-01-01Auto merge of #47098 - estebank:immutable-field, r=nagisabors-41/+44
Reword trying to operate in immutable fields The previous message ("cannot assign/mutably borrow immutable field") when trying to modify a field of an immutable binding gave the (incorrect) impression that fields can be mutable independently of their ADT's binding. Slightly reword the message to read "cannot assign/mutably borrow field of immutable binding". Re #35937.
2018-01-01Auto merge of #46895 - ricochet1k:macro-lifetimes, r=jseyfriedbors-0/+148
Allow lifetimes in macros This is a resurrection of PR #41927 which was a resurrection of #33135, which is intended to fix #34303. In short, this allows macros_rules! to use :lifetime as a matcher to match 'lifetimes. Still to do: - [x] Feature gate
2018-01-01Auto merge of #47064 - kennytm:force-trailing-newlines, r=estebankbors-45/+20
Add a tidy check for missing or too many trailing newlines. I've noticed recently there are lots of review comments requesting to fix trailing newlines. If this is going to be an official style here, it's better to let the CI do this repetitive check.
2017-12-31Reword trying to operate in immutable fieldsEsteban Küber-41/+44
The previous message ("cannot assign/mutably borrow immutable field") when trying to modify a field of an immutable binding gave the (incorrect) impression that fields can be mutable independently of their ADT's binding. Slightly reword the message to read "cannot assign/mutably borrow field of immutable binding".
2017-12-31Removed unnecessary output of linker options when linker is not installedFelix Schütt-1/+1
It's unnecessary to print the linker options if there is no linker installed. Currently, for libraries, the output is still printed, see #46998 for discussion
2017-12-31Auto merge of #47084 - ↵bors-0/+36
zackmdavis:and_the_case_of_the_bloated_tuple_struct_indices, r=petrochenkov in which leading zeroes on tuple-struct accesses are abjured Resolves #47073. If accepted, a point in the compatibility section of the release notes is warranted.
2017-12-30in which leading zeroes on tuple-struct accesses are abjuredZack M. Davis-0/+36
Resolves #47073.
2017-12-31Auto merge of #47044 - topecongiro:fixed-ices, r=estebankbors-0/+153
Add tests on fixed ICEs Closes #29924. Closes #38857. Closes #39665. Closes #39872. Closes #41210. Closes #41880. Closes #43483. Note that compile-fail/E0599.rs is for #41210.
2017-12-30Add tests on fixed ICEsSeiichi Uchida-0/+153
Closes #29924. Closes #38857. Closes #39665. Closes #39872. Closes #39553. Closes #41210. Closes #41880. Closes #43483.
2017-12-30Remove excessive trailing newlines.kennytm-25/+0
2017-12-30Add trailing newlines to files which have no trailing newlines.kennytm-20/+20
2017-12-29Auto merge of #47050 - ollie27:rustdoc_import_links, r=QuietMisdreavusbors-0/+34
rustdoc: Don't try to generate links for modules in import paths The modules may be private or may even be enums so it would generate dead links. Fixes #29814 Fixes #46766 Fixes #46767
2017-12-28rustdoc: Don't try to generate links for modules in import pathsOliver Middleton-0/+34
The modules may be private or may even be enums so it would generate dead links.
2017-12-28Add feature gate macro_lifetime_matcherMatt Peterson-0/+36
2017-12-28Fix build and add a macro lifetime labels testMatt Peterson-0/+43
2017-12-28Resurrecting #33135Michael Hewson-0/+69
Started rebasing @sgrif's PR #33135 off of current master. (Well, actually merging it into a new branch based off current master.) The following files still need to be fixed or at least reviewed: - `src/libsyntax/ext/tt/macro_parser.rs`: calls `Parser::parse_lifetime`, which doesn't exist anymore - `src/libsyntax/parse/parser.rs`: @sgrif added an error message to `Parser::parse_lifetime`. Code has since been refactored, so I just took it out for now. - `src/libsyntax/ext/tt/transcribe.rs`: This code has been refactored bigtime. Not sure whether @sgrif's changes here are still necessary. Took it out for this commit.
2017-12-28Auto merge of #47021 - shssoichiro:46576-Incorrect-Span-Imports, r=estebankbors-2/+47
Pass correct span when lowering grouped imports Solves incorrect diagnostics for unused or deprecated imports. Closes #46576. Deprecated imports had an existing test which asserted the incorrect span. That test has been corrected as part of this commit.
2017-12-28Auto merge of #47031 - topecongiro:issue-41719, r=jseyfriedbors-0/+18
Report an error when resolving non-ident macro path failed Closes #41719. Please feel free to bikeshed on the error message.
2017-12-28Auto merge of #47013 - topecongiro:issue-46655, r=petrochenkovbors-3/+28
Do not expand a derive invocation when derive is not allowed Closes #46655. The first commit is what actually closes #46655. The second one is just a refactoring I have done while waiting on a test.
2017-12-28Prefer to use attr::contains_name() and attr::find_by_name()Seiichi Uchida-3/+5
2017-12-28Auto merge of #47017 - topecongiro:issue-33469, r=estebankbors-0/+19
Do not panic on interpolated token inside quote macro Closes #33469.
2017-12-27Auto merge of #47014 - topecongiro:fixed-ices, r=estebankbors-0/+192
Add tests to fixed ICEs Closes #27078. Closes #27985. Closes #39848. Closes #42164. Closes #42479. Closes #45662. Closes #45965. Closes #46152.
2017-12-28Report an error when resolving non-ident macro path failedtopecongiro-0/+18
2017-12-27Auto merge of #46479 - bkchr:termination_trait, r=arielb1bors-70/+270
Implements RFC 1937: `?` in `main` This is the first part of the RFC 1937 that supports new `Termination` trait in the rust `main` function. Thanks @nikomatsakis, @arielb1 and all other people in the gitter channel for all your help! The support for doctest and `#[test]` is still missing, bu as @nikomatsakis said, smaller pull requests are better :)
2017-12-27Auto merge of #47009 - eddyb:issue-46855, r=arielb1bors-0/+34
rustc_trans: support ZST indexing involving uninhabited types. Fixes #46855 in a minimal way. I decided against supporting non-memory `Rvalue::Len` in this PR (see https://github.com/rust-lang/rust/issues/46855#issuecomment-352965807), as `PlaceContext::Inspect` is also used for `Rvalue::Discriminant`. r? @arielb1
2017-12-27Auto merge of #47007 - eddyb:issue-46897, r=arielb1bors-2/+3
rustc: don't use union layouts for tagged union enums. Fixes #46897, fixes #43517 (AFAICT from the testcases). This PR doesn't add any testcases, we should try to at least get perf ones (cc @Mark-Simulacrum). I couldn't find an example in those issues where the choice of LLVM array vs struct (with N identical fields) for padding filler types is still needed, *on top of* this change, to prevent excessive LLVM sinking. r? @arielb1
2017-12-27Auto merge of #46977 - est31:column_fix, r=dtolnaybors-5/+5
Make the output of the column! macro 1 based Fixes #46868. I didn't add any regression tests as the change already had to change tests inside the codebase. r? @dtolnay
2017-12-27Auto merge of #46803 - estebank:non-ascii-def-span, r=petrochenkovbors-18/+8
Use def span for non-ascii ident feature gate error
2017-12-27Revert "New generated main returns void"Bastian Köcher-2/+2
This reverts commit 267800a7c0834dd8ca93a82a20cb0cdd9e7dc025.
2017-12-26Auto merge of #46975 - matthewjasper:mir-moveck-asm, r=arielb1bors-1/+146
[MIR Borrowck] Moveck inline asm statements Closes #45695 New behavior: * Input operands to `asm!` are moved, direct output operands are initialized. * Direct, non-read-write outputs match the assignment changes in #46752 (Shallow writes, end borrows).
2017-12-26rustc: don't use union layouts for tagged union enums.Eduard-Mihai Burtescu-2/+3
2017-12-26rustc_trans: support ZST indexing involving uninhabited types.Eduard-Mihai Burtescu-0/+34
2017-12-26Pass correct span when lowering grouped importsJosh Holmer-2/+47
Solves incorrect diagnostics for unused or deprecated imports. Closes #46576. Deprecated imports had an existing test which asserted the incorrect span. That test has been corrected as part of this commit.
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