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| author | bors <bors@rust-lang.org> | 2022-09-14 18:10:51 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2022-09-14 18:10:51 +0000 |
| commit | 6153d3cbe6abc74fb37e4ebe48cc825484fd6bbf (patch) | |
| tree | bef7759236490fe278aa160a8ac63f41d37ecd27 /src/test/ui/parser | |
| parent | a92669638461836f41f54f95e396f9082bb91391 (diff) | |
| parent | 0faafbf1d91f7b9ea4c775cd33cf12008575a35b (diff) | |
| download | rust-6153d3cbe6abc74fb37e4ebe48cc825484fd6bbf.tar.gz rust-6153d3cbe6abc74fb37e4ebe48cc825484fd6bbf.zip | |
Auto merge of #101212 - eholk:dyn-star, r=compiler-errors
Initial implementation of dyn* This PR adds extremely basic and incomplete support for [dyn*](https://smallcultfollowing.com/babysteps//blog/2022/03/29/dyn-can-we-make-dyn-sized/). The goal is to get something in tree behind a flag to make collaboration easier, and also to make sure the implementation so far is not unreasonable. This PR does quite a few things: * Introduce `dyn_star` feature flag * Adds parsing for `dyn* Trait` types * Defines `dyn* Trait` as a sized type * Adds support for explicit casts, like `42usize as dyn* Debug` * Including const evaluation of such casts * Adds codegen for drop glue so things are cleaned up properly when a `dyn* Trait` object goes out of scope * Adds codegen for method calls, at least for methods that take `&self` Quite a bit is still missing, but this gives us a starting point. Note that this is never intended to become stable surface syntax for Rust, but rather `dyn*` is planned to be used as an implementation detail for async functions in dyn traits. Joint work with `@nikomatsakis` and `@compiler-errors.` r? `@bjorn3`
Diffstat (limited to 'src/test/ui/parser')
| -rw-r--r-- | src/test/ui/parser/trait-object-delimiters.rs | 2 | ||||
| -rw-r--r-- | src/test/ui/parser/trait-object-delimiters.stderr | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/src/test/ui/parser/trait-object-delimiters.rs b/src/test/ui/parser/trait-object-delimiters.rs index b5258eebb90..cc04ac05204 100644 --- a/src/test/ui/parser/trait-object-delimiters.rs +++ b/src/test/ui/parser/trait-object-delimiters.rs @@ -6,7 +6,7 @@ fn foo1(_: &dyn Drop + AsRef<str>) {} //~ ERROR ambiguous `+` in a type fn foo2(_: &dyn (Drop + AsRef<str>)) {} //~ ERROR incorrect braces around trait bounds fn foo3(_: &dyn {Drop + AsRef<str>}) {} //~ ERROR expected parameter name, found `{` -//~^ ERROR expected one of `!`, `(`, `)`, `,`, `?`, `for`, `~`, lifetime, or path, found `{` +//~^ ERROR expected one of `!`, `(`, `)`, `*`, `,`, `?`, `for`, `~`, lifetime, or path, found `{` //~| ERROR at least one trait is required for an object type fn foo4(_: &dyn <Drop + AsRef<str>>) {} //~ ERROR expected identifier, found `<` diff --git a/src/test/ui/parser/trait-object-delimiters.stderr b/src/test/ui/parser/trait-object-delimiters.stderr index 6eb9c7238cb..99c4515459d 100644 --- a/src/test/ui/parser/trait-object-delimiters.stderr +++ b/src/test/ui/parser/trait-object-delimiters.stderr @@ -22,11 +22,11 @@ error: expected parameter name, found `{` LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {} | ^ expected parameter name -error: expected one of `!`, `(`, `)`, `,`, `?`, `for`, `~`, lifetime, or path, found `{` +error: expected one of `!`, `(`, `)`, `*`, `,`, `?`, `for`, `~`, lifetime, or path, found `{` --> $DIR/trait-object-delimiters.rs:8:17 | LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {} - | -^ expected one of 9 possible tokens + | -^ expected one of 10 possible tokens | | | help: missing `,` |