diff --git a/src/test/ui/borrowck/issue-71546.rs b/src/test/ui/borrowck/issue-71546.rs new file mode 100644 index 0000000000000..943f7f86e5524 --- /dev/null +++ b/src/test/ui/borrowck/issue-71546.rs @@ -0,0 +1,19 @@ +// Regression test for #71546. + +// ignore-compare-mode-nll +// NLL stderr is different from the original one. + +pub fn serialize_as_csv(value: &V) -> Result +where + V: 'static, + for<'a> &'a V: IntoIterator, + for<'a> <&'a V as IntoIterator>::Item: ToString + 'static, +{ + let csv_str: String = value //~ ERROR: the associated type `<&'a V as IntoIterator>::Item` may not live long enough + .into_iter() + .map(|elem| elem.to_string()) + .collect::(); + Ok(csv_str) +} + +fn main() {} diff --git a/src/test/ui/borrowck/issue-71546.stderr b/src/test/ui/borrowck/issue-71546.stderr new file mode 100644 index 0000000000000..d479ca8f1d8b9 --- /dev/null +++ b/src/test/ui/borrowck/issue-71546.stderr @@ -0,0 +1,20 @@ +error[E0310]: the associated type `<&'a V as IntoIterator>::Item` may not live long enough + --> $DIR/issue-71546.rs:12:27 + | +LL | let csv_str: String = value + | ___________________________^ +LL | | .into_iter() +LL | | .map(|elem| elem.to_string()) + | |_____________________________________^ + | + = help: consider adding an explicit lifetime bound `<&'a V as IntoIterator>::Item: 'static`... + = note: ...so that the type `<&'a V as IntoIterator>::Item` will meet its required lifetime bounds... +note: ...that is required by this bound + --> $DIR/issue-71546.rs:10:55 + | +LL | for<'a> <&'a V as IntoIterator>::Item: ToString + 'static, + | ^^^^^^^ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0310`.