Handle multiple applicable projection candidates

src/test/ui/associated-types/associated-types-bound-ambiguity.rs

@@ -0,0 +1,23 @@
+// Make sure that if there are multiple applicable bounds on a projection, we
+// consider them ambiguous. In this test we are initially trying to solve
+// `Self::Repr: From<_>`, which is ambiguous until we later infer `_` to
+// `{integer}`.
+
+// check-pass
+
+trait PrimeField: Sized {
+    type Repr: From<u64> + From<Self>;
+    type Repr2: From<Self> + From<u64>;
+
+    fn method() {
+        Self::Repr::from(10);
+        Self::Repr2::from(10);
+    }
+}
+
+fn function<T: PrimeField>() {
+    T::Repr::from(10);
+    T::Repr2::from(10);
+}
+
+fn main() {}