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Original file line number Diff line number Diff line change
Expand Up @@ -219,6 +219,13 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
) -> Result<(), SelectionError<'tcx>> {
debug!(?stack.obligation);

// An error type will unify with anything. So, avoid
// matching an error type with `ParamCandidate`.
// This helps us avoid spurious errors like issue #121941.
if stack.obligation.predicate.references_error() {
return Ok(());
}

let all_bounds = stack
.obligation
.param_env
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
fn function<T: PartialEq>() {
foo == 2; //~ ERROR cannot find value `foo` in this scope [E0425]
}

fn main() {}
Original file line number Diff line number Diff line change
@@ -0,0 +1,9 @@
error[E0425]: cannot find value `foo` in this scope
--> $DIR/dont-match-error-ty-with-calller-supplied-obligation-issue-121941.rs:2:5
|
LL | foo == 2;
| ^^^ not found in this scope

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0425`.