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-rw-r--r--vm_method.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/vm_method.c b/vm_method.c
index 11131fc807..02e46f3b84 100644
--- a/vm_method.c
+++ b/vm_method.c
@@ -324,7 +324,8 @@ rb_method_entry_make(VALUE klass, ID mid, rb_method_type_t type,
type != VM_METHOD_TYPE_UNDEF &&
old_def->alias_count == 0 &&
old_def->type != VM_METHOD_TYPE_UNDEF &&
- old_def->type != VM_METHOD_TYPE_ZSUPER) {
+ old_def->type != VM_METHOD_TYPE_ZSUPER &&
+ old_def->type != VM_METHOD_TYPE_ALIAS) {
const rb_iseq_t *iseq = 0;
rb_warning("method redefined; discarding old %"PRIsVALUE, rb_id2str(mid));