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-rw-r--r--tests/ui/type-alias-impl-trait/equal-lifetime-params-ok.rs4
1 files changed, 3 insertions, 1 deletions
diff --git a/tests/ui/type-alias-impl-trait/equal-lifetime-params-ok.rs b/tests/ui/type-alias-impl-trait/equal-lifetime-params-ok.rs
index 6e3f72a1ebe..0ce85a4d6cb 100644
--- a/tests/ui/type-alias-impl-trait/equal-lifetime-params-ok.rs
+++ b/tests/ui/type-alias-impl-trait/equal-lifetime-params-ok.rs
@@ -1,4 +1,6 @@
-// FIXME: description
+// Normally we do not allow equal lifetimes in opaque type generic args at
+// their defining sites. An exception to this rule, however, is when the bounds
+// of the opaque type *require* the lifetimes to be equal.
 // issue: #113916
 //@ check-pass