[mono] Fix type lookup failure in mono_class_is_subclass_of_internal (d…

…otnet#54817) * Only call mono_class_init_internal if check_interfaces is true. * Fixes dotnet#54816
adamsitnik · Jul 2, 2021 · 5b337cb · 5b337cb
1 parent b862155
commit 5b337cb
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/mono/mono/metadata/class.c b/src/mono/mono/metadata/class.c
@@ -3523,8 +3523,10 @@ mono_class_is_subclass_of_internal (MonoClass *klass, MonoClass *klassc,
 {
 	MONO_REQ_GC_UNSAFE_MODE;
 	/* FIXME test for interfaces with variant generic arguments */
-	mono_class_init_internal (klass);
-	mono_class_init_internal (klassc);
+	if (check_interfaces) {
+		mono_class_init_internal (klass);
+		mono_class_init_internal (klassc);
+	}
 
 	if (check_interfaces && MONO_CLASS_IS_INTERFACE_INTERNAL (klassc) && !MONO_CLASS_IS_INTERFACE_INTERNAL (klass)) {
 		if (MONO_CLASS_IMPLEMENTS_INTERFACE (klass, m_class_get_interface_id (klassc)))