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diff --git a/src/test/ui/impl-trait/multiple-lifetimes/ordinary-bounds-unsuited.rs b/src/test/ui/impl-trait/multiple-lifetimes/ordinary-bounds-unsuited.rs
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+++ b/src/test/ui/impl-trait/multiple-lifetimes/ordinary-bounds-unsuited.rs
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+// edition:2018
+
+trait Trait<'a, 'b> {}
+impl<T> Trait<'_, '_> for T {}
+
+// `Ordinary<'a> <: Ordinary<'b>` if `'a: 'b`, as with most types.
+//
+// I am purposefully avoiding the terms co- and contra-variant because
+// their application to regions depends on how you interpreted Rust
+// regions. -nikomatsakis
+struct Ordinary<'a>(&'a u8);
+
+// Here we need something outlived by `'a` *and* outlived by `'b`, but
+// we can only name `'a` and `'b` (and neither suits). So we get an
+// error. Somewhat unfortunate, though, since the caller would have to
+// consider the loans for both `'a` and `'b` alive.
+
+fn upper_bounds<'a, 'b>(a: Ordinary<'a>, b: Ordinary<'b>) -> impl Trait<'a, 'b>
+{
+    // We return a value:
+    //
+    // ```
+    // 'a: '0
+    // 'b: '1
+    // '0 in ['a, 'b]
+    // ```
+    //
+    // but we don't have it.
+    //
+    // We are forced to pick that '0 = 'e, because only 'e is outlived by *both* 'a and 'b.
+    if condition() { a } else { b }
+    //~^ ERROR hidden type for `impl Trait<'a, 'b>` captures lifetime that does not appear in bounds
+}
+
+fn condition() -> bool {
+    true
+}
+
+fn main() {}