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 :)
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
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
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
[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).
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.
[auto-toolstate] Upload the toolstate result to an external git repository, and removes BuildExpectation
This PR consists of 3 commits.
1. (Steps 4–6) The `toolstate.json` output previously collected is now pushed to the https://github.com/rust-lang-nursery/rust-toolstate repository.
2. (Step 7) Revert commit ab018c7, thus removing all traces of `BuildExpectation` and `toolstate.toml`.
3. (Step 8) Adjust CONTRIBUTION.md for the new procedure.
These are the last steps of #45861. After this PR, the toolstate will be automatically computed and published to https://rust-lang-nursery.github.io/rust-toolstate/. There is no need to manage toolstate.toml again.
Closes#45861.
This reverts commit ab018c76e1.
This also adds the `ToolBuild::is_ext_tool` field to replace the previous
`ToolBuild::expectation` field, to indicate whether a build-failure of
certain tool is essential.
