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-rw-r--r--vm_insnhelper.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 2e00c0e1de..6544ed89fc 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1425,6 +1425,7 @@ static inline VALUE
vm_search_normal_superclass(VALUE klass, VALUE recv)
{
if (BUILTIN_TYPE(klass) == T_CLASS) {
+ klass = RCLASS_ORIGIN(klass);
return RCLASS_SUPER(klass);
}
else if (BUILTIN_TYPE(klass) == T_MODULE) {