diff options
Diffstat (limited to 'src/test/ui/argument-suggestions/formal-and-expected-differ.rs')
-rw-r--r-- | src/test/ui/argument-suggestions/formal-and-expected-differ.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/argument-suggestions/formal-and-expected-differ.rs b/src/test/ui/argument-suggestions/formal-and-expected-differ.rs new file mode 100644 index 000000000..5e3b55ca5 --- /dev/null +++ b/src/test/ui/argument-suggestions/formal-and-expected-differ.rs @@ -0,0 +1,25 @@ +pub trait Foo { + type T; +} + +impl Foo for i32 { + type T = f32; +} + +pub struct U<T1, T2>(T1, S<T2>) +where + T1: Foo<T = T2>; + +pub struct S<T>(T); + +fn main() { + // The error message here isn't great -- it has to do with the fact that the + // `expected_inputs_for_expected_output` deduced inputs differs from the inputs + // that we infer from the constraints of the signature. + // + // I am not really sure what the best way of presenting this error message is, + // since right now it just suggests changing `3u32` <=> `3f32` back and forth. + let _: U<_, u32> = U(1, S(3u32)); + //~^ ERROR mismatched types + //~| ERROR mismatched types +} |