foo.diff

diff --git a/Zend/zend_inheritance.c b/Zend/zend_inheritance.c
index 77ea7d5..5045544 100644
--- a/Zend/zend_inheritance.c
+++ b/Zend/zend_inheritance.c
@@ -1000,20 +1000,34 @@ ZEND_API void zend_do_implement_trait(zend_class_entry *ce, zend_class_entry *tr
 	if (!ignore) {
 		if (ce->num_traits >= current_trait_num) {
 			if (ce->type == ZEND_INTERNAL_CLASS) {
 				ce->traits = (zend_class_entry **) realloc(ce->traits, sizeof(zend_class_entry *) * (++current_trait_num));
 			} else {
 				ce->traits = (zend_class_entry **) erealloc(ce->traits, sizeof(zend_class_entry *) * (++current_trait_num));
 			}
 		}
 		ce->traits[ce->num_traits++] = trait;
 	}
+
+    if (trait->num_interfaces > 0) {
+        uint32_t total_ifaces = ce->num_interfaces + trait->num_interfaces;
+        uint32_t i;
+        if (ce->type == ZEND_INTERNAL_CLASS) {
+            ce->interfaces = (zend_class_entry **) realloc(ce->interfaces, sizeof(zend_class_entry *) * total_ifaces);
+        } else {
+            ce->interfaces = (zend_class_entry **) erealloc(ce->interfaces, sizeof(zend_class_entry *) * total_ifaces);
+        }
+        for (i = 0; i < trait->num_interfaces; ++i) {
+            ce->interfaces[ce->num_interfaces + i] = trait->interfaces[i];
+        }
+        ce->num_interfaces += total_ifaces;
+    }
 }
 /* }}} */
 
 static zend_bool zend_traits_method_compatibility_check(zend_function *fn, zend_function *other_fn) /* {{{ */
 {
 	uint32_t    fn_flags = fn->common.scope->ce_flags;
 	uint32_t other_flags = other_fn->common.scope->ce_flags;
 
 	return zend_do_perform_implementation_check(fn, other_fn)
 		&& ((other_fn->common.scope->ce_flags & ZEND_ACC_INTERFACE) || zend_do_perform_implementation_check(other_fn, fn))