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//@ aux-build:crate_a1.rs
//@ aux-build:crate_a2.rs
// Issue 22750
// This tests the extra help message reported when a trait bound
// is not met but the struct implements a trait with the same path.
fn main() {
let foo = {
extern crate crate_a2 as a;
a::Foo
};
let implements_no_traits = {
extern crate crate_a2 as a;
a::DoesNotImplementTrait
};
let other_variant_implements_mismatched_trait = {
extern crate crate_a2 as a;
a::ImplementsWrongTraitConditionally { _marker: std::marker::PhantomData::<isize> }
};
let other_variant_implements_correct_trait = {
extern crate crate_a1 as a;
a::ImplementsTraitForUsize { _marker: std::marker::PhantomData::<isize> }
};
{
extern crate crate_a1 as a;
a::try_foo(foo);
//~^ ERROR E0277
//~| trait impl with same name found
//~| perhaps two different versions of crate `crate_a2`
// We don't want to see the "version mismatch" help message here
// because `implements_no_traits` has no impl for `Foo`
a::try_foo(implements_no_traits);
//~^ ERROR E0277
// We don't want to see the "version mismatch" help message here
// because `other_variant_implements_mismatched_trait`
// does not have an impl for its `<isize>` variant,
// only for its `<usize>` variant.
a::try_foo(other_variant_implements_mismatched_trait);
//~^ ERROR E0277
// We don't want to see the "version mismatch" help message here
// because `ImplementsTraitForUsize` only has
// impls for the correct trait where the path is not misleading.
a::try_foo(other_variant_implements_correct_trait);
//~^ ERROR E0277
//~| the trait `main::a::Bar` is implemented for `ImplementsTraitForUsize<usize>`
}
}
|
