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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs')
-rw-r--r-- | tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs b/tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs new file mode 100644 index 000000000..3cd6d336e --- /dev/null +++ b/tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs @@ -0,0 +1,32 @@ +// Regression test: if we suggest replacing an `impl Trait` argument to an async +// fn with a named type parameter in order to add bounds, the suggested function +// signature should be well-formed. +// +// edition:2018 + +trait Foo { + type Bar; + fn bar(&self) -> Self::Bar; +} + +async fn run(_: &(), foo: impl Foo) -> std::io::Result<()> { + let bar = foo.bar(); + assert_is_send(&bar); +//~^ ERROR: `<impl Foo as Foo>::Bar` cannot be sent between threads safely + + Ok(()) +} + +// Test our handling of cases where there is a generic parameter list in the +// source, but only synthetic generic parameters +async fn run2< >(_: &(), foo: impl Foo) -> std::io::Result<()> { + let bar = foo.bar(); + assert_is_send(&bar); +//~^ ERROR: `<impl Foo as Foo>::Bar` cannot be sent between threads safely + + Ok(()) +} + +fn assert_is_send<T: Send>(_: &T) {} + +fn main() {} |