diff options
| -rw-r--r-- | tests/ui/inference/detect-old-time-version-format_description-parse.rs | 13 | ||||
| -rw-r--r-- | tests/ui/inference/detect-old-time-version-format_description-parse.stderr | 11 |
2 files changed, 16 insertions, 8 deletions
diff --git a/tests/ui/inference/detect-old-time-version-format_description-parse.rs b/tests/ui/inference/detect-old-time-version-format_description-parse.rs index 453a795e768..386b2a3bf3c 100644 --- a/tests/ui/inference/detect-old-time-version-format_description-parse.rs +++ b/tests/ui/inference/detect-old-time-version-format_description-parse.rs @@ -1,8 +1,13 @@ #![crate_name = "time"] +#![crate_type = "lib"] -fn main() { - let items = Box::new(vec![]); //~ ERROR E0282 +// This code compiled without error in Rust 1.79, but started failing in 1.80 +// after the addition of several `impl FromIterator<_> for Box<str>`. + +pub fn parse() -> Option<Vec<()>> { + let iter = std::iter::once(Some(())).map(|o| o.map(Into::into)); + let items = iter.collect::<Option<Box<_>>>()?; //~ ERROR E0282 + //~^ NOTE this is an inference error on crate `time` caused by an API change in Rust 1.80.0; update `time` to version `>=0.3.35` + Some(items.into()) //~^ NOTE type must be known at this point - //~| NOTE this is an inference error on crate `time` caused by an API change in Rust 1.80.0; update `time` to version `>=0.3.35` - items.into(); } diff --git a/tests/ui/inference/detect-old-time-version-format_description-parse.stderr b/tests/ui/inference/detect-old-time-version-format_description-parse.stderr index 2949a5dcfec..a70ce9dd268 100644 --- a/tests/ui/inference/detect-old-time-version-format_description-parse.stderr +++ b/tests/ui/inference/detect-old-time-version-format_description-parse.stderr @@ -1,8 +1,11 @@ -error[E0282]: type annotations needed for `Box<Vec<_>>` - --> $DIR/detect-old-time-version-format_description-parse.rs:4:9 +error[E0282]: type annotations needed for `Box<_>` + --> $DIR/detect-old-time-version-format_description-parse.rs:9:9 | -LL | let items = Box::new(vec![]); - | ^^^^^ ---------------- type must be known at this point +LL | let items = iter.collect::<Option<Box<_>>>()?; + | ^^^^^ +LL | +LL | Some(items.into()) + | ---- type must be known at this point | = note: this is an inference error on crate `time` caused by an API change in Rust 1.80.0; update `time` to version `>=0.3.35` by calling `cargo update` |