diff options
Diffstat (limited to 'tests/ui/issues/issue-20971.rs')
-rw-r--r-- | tests/ui/issues/issue-20971.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-20971.rs b/tests/ui/issues/issue-20971.rs new file mode 100644 index 000000000..2e1041817 --- /dev/null +++ b/tests/ui/issues/issue-20971.rs @@ -0,0 +1,23 @@ +// Regression test for Issue #20971. + +// run-fail +// error-pattern:Hello, world! +// ignore-emscripten no processes + +pub trait Parser { + type Input; + fn parse(&mut self, input: <Self as Parser>::Input); +} + +impl Parser for () { + type Input = (); + fn parse(&mut self, input: ()) {} +} + +pub fn many() -> Box<dyn Parser<Input = <() as Parser>::Input> + 'static> { + panic!("Hello, world!") +} + +fn main() { + many().parse(()); +} |