Upgrade ProjectionTy's Name to a DefId
Part of #42171, in preparation for downgrading the contained `TraitRef` to
only its `substs`.
Some inline questions in the diff. Look for `FIXME(tschottdorf)`. These comments
should be addressed before merging.
rustdoc: Cleanup associated const value rendering
Rather than (ab)using Debug for outputting the type in plain text use the
alternate format parameter which already does exactly that. This fixes
type parameters for example which would output raw HTML.
Also cleans up adding parens around references to trait objects.
Rather than (ab)using Debug for outputting the type in plain text use the
alternate format parameter which already does exactly that. This fixes
type parameters for example which would output raw HTML.
Also cleans up adding parens around references to trait objects.
RangeFrom should have an infinite size_hint
Before,
```rust
(0..).take(4).size_hint() == (0, Some(4))
```
With this change,
```rust
(0..).take(4).size_hint() == (4, Some(4))
```
Clarify the docs for align_of and its variants
It's okay to have unaligned raw pointers and then use `ptr::write_unaligned` and `ptr::read_unaligned`.
However, using unaligned `&T` and `&mut T` would be undefined behavior.
The current documentation seems to indicate that everything has to be aligned, but in reality only references do. This PR changes the text of docs accordingly.
r? @sfackler
Explain why a closure is `FnOnce` in closure errors.
Issue: #42065
@nikomatsakis Am I going the right direction with this?
~~I am stuck in a few bits:~~
~~1. How to trace the code to get the upvar instead of the original variable's span?~~
~~2. How to find the node id of the upvar where the move occured?~~
Clarify docs on implementing Into.
This was suggested by @dtolnay in #40380.
This explicitly clarifies in what circumstances you should implement `Into` instead of `From`.
rust-src: include everything needed to compile libstd with jemalloc
I am not very happy about all this `Path::new`, but did not find a nice way to avoid it. Also, this shouldn't be very performance-critical.
With this patch, rust-src-1.19.0-dev.tar.gz grows from 1.4 to 3.1 MiB (new uncompressed size: 15.5 MiB). Not great, but shipping incomplete sources is also not great, and this is still much smaller than pre-#41546. Excluding the entire `src/jemalloc/test` does not work, unfortunately; there is a file in there that is needed to build libstd. (And anyway there's just 190 KiB uncompressed left in that folder.)
In principle, we could try excluding the Rust test suite directories (that would be `libcore/tests` and `libcollection/tests`). I don't know enough about how this component is used to judge whether that would cause any problems. Anyway this is just 600 KiB uncompressed.
Fixes#41952
incr.comp.: Remove DepGraph::write() and its callers
After months of yak shaving, we are finally there `:)`
The existence of `DepGraph::write()` was one of the two main ways for introducing cycles into the dep-graph -- something we need to avoid in the future. The other way, re-opening nodes to add more edges, is next on the list.
r? @nikomatsakis
