Point at type parameter in plain path expr

This commit is contained in:
Michael Goulet 2022-09-04 20:48:39 +00:00
parent a2cdcb3fea
commit 3b3c7063c2
3 changed files with 33 additions and 10 deletions

View File

@ -1780,16 +1780,16 @@ fn adjust_fulfillment_error_for_expr_obligation(
return true;
}
}
// Notably, we only point to params that are local to the
// item we're checking, since those are the ones we are able
// to look in the final `hir::PathSegment` for. Everything else
// would require a deeper search into the `qpath` than I think
// is worthwhile.
if let Some(param_to_point_at) = param_to_point_at
&& self.point_at_path_if_possible(error, def_id, param_to_point_at, qpath)
{
return true;
}
}
// Notably, we only point to params that are local to the
// item we're checking, since those are the ones we are able
// to look in the final `hir::PathSegment` for. Everything else
// would require a deeper search into the `qpath` than I think
// is worthwhile.
if let Some(param_to_point_at) = param_to_point_at
&& self.point_at_path_if_possible(error, def_id, param_to_point_at, qpath)
{
return true;
}
}
hir::ExprKind::MethodCall(segment, args, ..) => {

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@ -0,0 +1,6 @@
fn foo<T: std::fmt::Display>() {}
fn main() {
let x = foo::<()>;
//~^ ERROR `()` doesn't implement `std::fmt::Display`
}

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@ -0,0 +1,17 @@
error[E0277]: `()` doesn't implement `std::fmt::Display`
--> $DIR/point-at-type-param-in-path-expr.rs:4:19
|
LL | let x = foo::<()>;
| ^^ `()` cannot be formatted with the default formatter
|
= help: the trait `std::fmt::Display` is not implemented for `()`
= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
note: required by a bound in `foo`
--> $DIR/point-at-type-param-in-path-expr.rs:1:11
|
LL | fn foo<T: std::fmt::Display>() {}
| ^^^^^^^^^^^^^^^^^ required by this bound in `foo`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.