From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- ...3-impl-trait-with-missing-bounds-on-async-fn.rs | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs (limited to 'tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs') 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: `::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: `::Bar` cannot be sent between threads safely + + Ok(()) +} + +fn assert_is_send(_: &T) {} + +fn main() {} -- cgit v1.2.3