diff options
Diffstat (limited to 'src/test/ui/traits/multidispatch-convert-ambig-dest.rs')
-rw-r--r-- | src/test/ui/traits/multidispatch-convert-ambig-dest.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/traits/multidispatch-convert-ambig-dest.rs b/src/test/ui/traits/multidispatch-convert-ambig-dest.rs new file mode 100644 index 000000000..aa74e11c3 --- /dev/null +++ b/src/test/ui/traits/multidispatch-convert-ambig-dest.rs @@ -0,0 +1,31 @@ +// Check that we get an error in a multidisptach scenario where the +// set of impls is ambiguous. + +trait Convert<Target> { + fn convert(&self) -> Target; +} + +impl Convert<i8> for i32 { + fn convert(&self) -> i8 { + *self as i8 + } +} + +impl Convert<i16> for i32 { + fn convert(&self) -> i16 { + *self as i16 + } +} + +fn test<T,U>(_: T, _: U) +where T : Convert<U> +{ +} + +fn a() { + test(22, std::default::Default::default()); + //~^ ERROR type annotations needed + //~| ERROR type annotations needed +} + +fn main() {} |