Warn about @JvmSuppressWildcards.

RELNOTES=n/a PiperOrigin-RevId: 547330693
google · Jul 11, 2023 · 4ce467b · 4ce467b
1 parent ba73556
commit 4ce467b
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/java/dagger/internal/codegen/bindinggraphvalidation/MissingBindingValidator.java b/java/dagger/internal/codegen/bindinggraphvalidation/MissingBindingValidator.java
@@ -124,7 +124,11 @@ private void reportMissingBinding(
                   wildcardAlternatives.stream()
                       .map(
                           binding -> binding.key().type() + " in [" + binding.componentPath() + "]")
-                      .collect(toImmutableSet())));
+                      .collect(toImmutableSet())))
+                  + "\n(In Kotlin source, a type like 'Set<Foo>' may"
+                  + " be translated as 'Set<? extends Foo>'. To avoid this implicit"
+                  + " conversion you can add '@JvmSuppressWildcards' on the associated type"
+                  + " argument, e.g. 'Set<@JvmSuppressWildcards Foo>'.)";
     }
 
     List<ComponentPath> alternativeComponents =