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Avoid ICE by using delay_span_bug

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estebank committed May 11, 2019
1 parent 33cde4a commit adc18eb7cfd0315a5bdba54ecc0d926176c4cd80
Showing with 29 additions and 2 deletions.
  1. +3 −2 src/librustc_typeck/check/mod.rs
  2. +17 −0 src/test/ui/issues/issue-53498.rs
  3. +9 −0 src/test/ui/issues/issue-53498.stderr
@@ -5653,10 +5653,11 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
match self.at(&self.misc(span), self.param_env).sup(impl_ty, self_ty) {
Ok(ok) => self.register_infer_ok_obligations(ok),
Err(_) => {
span_bug!(span,
self.tcx.sess.delay_span_bug(span, &format!(
"instantiate_value_path: (UFCS) {:?} was a subtype of {:?} but now is not?",
self_ty,
impl_ty);
impl_ty,
));
}
}
}
@@ -0,0 +1,17 @@
pub mod test {
pub struct A;
pub struct B;
pub struct Foo<T>(T);

impl Foo<A> {
fn foo() {}
}

impl Foo<B> {
fn foo() {}
}
}

fn main() {
test::Foo::<test::B>::foo(); //~ ERROR method `foo` is private
}
@@ -0,0 +1,9 @@
error[E0624]: method `foo` is private
--> $DIR/issue-53498.rs:16:5
|
LL | test::Foo::<test::B>::foo();
| ^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0624`.

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